SARS-CoV N蛋白功能的分子机制和作为抗原在SARS诊断上的应用
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摘要
PhD candidate: Khalid Amine Timani ID No. 2001193004 Academic Supervisor: ProfLinbai Ye Sate Key lab of Virology, College of Life Sciences, Wuhan University
     2003年,非典型性肺炎在全世界30多个国家广泛流行,给人类健康带来了极大的威胁和伤害。2003年4月16日,WHO正式确定非典型性肺炎的病原体是冠状病毒家族中的一个变种,将此病毒正式命名为“SARS病毒”。虽然目前没有新的SARS疫情发生,但是SARS仍然对全人类的健康存在着威胁。因此,对SARS病毒的实验研究将有助于了解SARS疾病的传播以及感染机制和控制SARS疾病。
     武汉大学生命科学学院从湖北SARS病人血清中分离到了SARS冠状病毒湖北株SARS-CoV(Hubei)。我们对该毒株的核衣壳蛋白(Nucleocapsid protein,N protein)的基因序列进行了测序(序列已提交至基因库Genbank,序号为AY365036),并使用DNAStar软件对SARS-CoV(Hubei)的N蛋白的基因序列同在中国北京、广东、浙江、香港和台湾分离出的其他11株SARS病毒的N蛋白的基因序列,以及加拿大、新加坡、意大利、德国和美国的SARS病毒的N蛋白的基因序列进行了对比。序列对比的结果表明,N蛋白基因序列上出现了两处碱基替代,分别是第284个核苷酸由T变为C和第689个核苷酸由A变为G。这两处的碱基替代都是错义突变,均导致了蛋白质氨基酸序列的改变,即在N蛋白的氨基酸序列上的第95个氨基酸由缬氨酸突变为丙氨酸,第230个氨基酸由精氨酸突变为谷氨酸。
     由于非典型性肺炎有极高的传染性,因此发展在SARS冠状病毒感染早期的诊断技术是当务之急。我们应用PCR技术从已有的pGEMT-N质粒中扩增获得长度约为1.2kb的N基因序列,并将此DNA序列克隆到原核表达载体pET-His中,将重组质粒pET-His-N转化大肠杆菌BL21(DE3)后,IPTG诱导使其在大肠杆菌中表达,收集菌体,超声波振荡裂解菌体,用Ni-NTA-Superflow亲和层析柱从裂解液中纯化N蛋白,SDS-PAGE检测N蛋白纯化情况。我们用纯化的重组N蛋白作为抗原,用ELISA检测16份已确诊的非典型性肺炎病人阳性血清和131份正常人阴性血清的SARS冠状病毒特异性IgG抗体。发病10天的SARS病人血清的阳性检出率是81.3%(13/16),发病20天的SARS病人血清的阳性检出率是100%(16/16),发病30天的SARS病人血清的阳性检出率是100%(16/16),阴性血
The sudden outbreak of the human severe acute respiratory syndrome (SARS) in 2002 prompted the establishment of a global scientific network subsuming most of the traditional rivalries in the competitive field of virology. Within months of the SARS outbreak, collaborative work revealed the identity of the disastrous pathogen as SARS-associated coronavirus (SARS-CoV). Even in a situation of no new infections, SARS remains a major health hazard, as new epidemics may arise. Therefore, further experimental and clinical research is required to understand its infectious mechanism and control the disease.Given the highly contagious and acute nature of the disease, there is an urgent need for development of diagnostic assays that can detect SARS-CoV infection, more importantly, at its early stages. One important viral protein that can serve this goal is nucleocapsid (N) due to its high antigenic nature. The N protein gene sequence of SARS-CoV Hubei isolate strain was performed and the sequence was deposited to the Genbank accession number (AY365036). The N protein gene sequence alignment with N protein of eleven isolates from different regions in China (Beijing, Guangzhu and Zhejiang, Hong Kong and Taiwan) and other countries (Canada, Singapore, Italy, Germany and USA) revealed two basses substitution in N protein gene. These nucleotide changes were located at positions 284 and 689 from (T to C) and (A to G), respectively. The changes were non-synonymous and resulted in amino aids changes, valine to alanine and arginine to glutamine, at amino acid positions 95 and 230 of the N protein, respectively.The full length of N protein is 422 amino acids (aa) with an amino-terminal hexahistidine-tag was expressed in E.coli system, BL21(DE3), and purified by Ni-NTA affinity column chromatography to homogeneity. Recombinant purified SARS-CoV N protein was employed to establish an antigen-capturing enzyme linked immunosorbent assay (ELISA) and used to measure the SARS-CoV specific IgG antibodies from 16 SARS-CoV infected patients' sera and from 131 control subjects. Specific antibody responses to the purified recombinant N protein after 10, 20, and 30 days of disease onset were observed in 13 of 16 (81.3%), 16 of 16 (100%) and L6 of 16 (100%) Comparison of detection results with a commercially available diagnostic kit coated with a mixture of
    SARS-CoV viral proteins showed 9 of 16 (56.3%), 13 of 16 (81.3%), and 15 of 16 (93.7%) positive responses, respectively. None of 131 control sera subjects gave positive reaction in either assay. This data suggests that the N protein of SARS-CoV is immunodominant and this ELISA based test assay for detecting the SARS-CoV N antigen may hold a significant value for SARS diagnosis.Understanding the intracellular localization properties on N protein might shed light on its molecular mechanism during SARS infection and its possible role in SARS pathogenesis. Although coronaviruses and arteriviruses encode N protein whose principle function is to bind viral RNA, the proteins themselves are of a different size and have no discernable homology. However, an identical nucleolar-cytoplasmic localization pattern is observed. In this study, we further investigated whether this nucleolar localization pattern extends to SARS-CoV N protein. Rabbit polyclonal antibody specific for the purified N protein was generated and used to examine its intracellular localization using confocal microscopy. PSORT II program sequence analysis of the N protein identified three classical putative nuclear localization signal (NLS) motifs, labeled NLS1, NLS2 and NLS3 located at positions aa34-44, aa257-265 and aa369-390, respectively. The indirect immunofluorescence staining showed that wild type N protein localized mainly to the cytoplasm in Vero E6 infected with SARS-CoV and Vero E6, Vero and HeLa cells transfected with plasmid expressing full length N protein, and was not clear in the nucleolus.Intriguingly, the expression of C-terminal N protein was found in the cytoplasm and nucleus, concentrated in the nucleolus. This feature was confirmed to the nucleolus by using specific monoclonal antibody to nucleolar shuttling phosphorprotein B23. The results of various deletion mutants either alone or fused to enhanced green fluorescent protein (EGFP) showed that the region covering aa232-289 and overlapping NLS2 is responsible for this nucleolar localization and might considered as nucleolar localization signal (NoLS). Furthermore, deletion of leucine rich region (LRR; 220-LALLLLDRLNRL) resulted in the accumulation of N protein to the cytoplasm and nucleolus, and when fusing this peptide to EGFP localization was cytoplasmic, suggesting that the N protein may act as a shuttle protein. Leptomycin B treatment, a know inhibitor to the nuclear export signal (NES)-CRMl pathway has no effect on the localization pattern of full length N protein demonstrating that N protein maybe export via NES-CRM1 independent pathway or LRR may act as a masking signal. In addition, flow cytometric analysis and colony formation efficiency assays demonstrated that constitutive N-expressing Vero E6 cells exhibited cell growth retardation concomitantly
    with prolonged Go/Gi phase and shortened S phase of the cell cycle compared with control cells. Taken together, these results demonstrated that N protein may act as a nucleolar-cytoplasmic shuttling protein and the localization to the nucleus/nucleolus implies that N protein maybe involved in the regulating of cell cycle, possibly by delaying the cell growth, to promote intracellular conditions for virus assembly and sequestering ribosomes for translation of viral proteins.Patients with SARS usually have rapid progression of pneumonitis. Approximately one-third of SARS patients developed (Acute Respiratory Distress Syndrome, ARDS), one-tenth of the patients succumbed to death and one-tenth of patients revealed pulmonary fibrosis. The mechanisms of SARS-CoV infection caused atypical pneumonia remain unclear. Nuclear factor-kB (NF-kB) is a critical regulator of the immediate early pathogen response, playing an important role in promoting inflammation and in the regulation of cell proliferation and survival; moreover, many studies have shown that NF-kB played an important role in the pathogenesis of lung disease. In this research study we further investigated the possible regulatory mechanism of SARS-CoV N protein and NF-kB by using luciferase reporter assay. Our result showed that SARS-CoV N protein can significantly activate NF-kB only in Vero E6 cells, but there is no such significant activation in Vero or HeLa cell lines compared with backbone vector, suggested that this NF-kB activation is cell type specific. Furthermore, this NF-kB activation in Vero E6 cells expressing-N protein was shown to be concentration dependent. Different deletion mutation of N protein revealed that conformation of full length N protein was crucial for the NF-kB activation. This unique function of SARS-CoV N protein from other members of coronavirus family postulated that N protein can be a good target for the development of vaccine and antiviral drugs.
引文
1. Adam, E. J., and S. A. Adam. 1994. Identification of cytosolic factors required for nuclear location sequence-mediated binding to the nuclear envelope. J Cell Biol 125:547-55.
    2. Akari, H., S. Bour, S. Kao, A. Adachi, and K. Strebel. 2001. The human immunodeficiency virus type 1 accessory protein Vpu induces apoptosis by suppressing the nuclear factor kappaB-dependent expression of antiapoptotic factors. J Exp Med 194:1299-311.
    3. Akerstrom, S., M. Mousavi-Jazi, J. Klingstrom, M. Leijon, A. Lundkvist, and A. Mirazimi. 2005. Nitric oxide inhibits the replication cycle of severe acute respiratory syndrome coronavirus. J Virol 79:1966-9.
    4. Akin, A., T. L. Lin, C. C. Wu, T. A. Bryan, T. Hooper, and D. Schrader. 2001. Nucleocapsid protein gene sequence analysis reveals close genomic relationship between turkey coronavirus and avian infectious bronchitis virus. Acta Virol 45:31-8.
    5. Almazan, F., C. Galan, and L. Enjuanes. 2004. The nucleoprotein is required for efficient coronavirus genome replication. J Virol 78:12683-8.
    6. Amici, C, G. Belardo, A. Rossi, and M. G. Santoro. 2001. Activation of I kappa b kinase by herpes simplex virus type 1. A novel target for anti-herpetic therapy. J Biol Chem 276:28759-66.
    7. An, S., C. J. Chen, X. Yu, J. L. Leibowitz, and S. Makino. 1999. Induction of apoptosis in murine coronavirus-infected cultured cells and demonstration of E protein as an apoptosis inducer. J Virol 73:7853-9.
    8. Arima, N., C. Y. Kao, T. Licht, R. Padmanabhan, and Y. Sasaguri. 2001. Modulation of cell growth by the hepatitis C virus nonstructural protein NS5A. J Biol Chem 276:12675-84.
    9. Baric, R. S., G. W. Nelson, J. O. Fleming, R. J. Deans, J. G. Keck, N. Casteel, and S. A. Stohlman. 1988. Interactions between coronavirus nucleocapsid protein and viral RNAs: implications for viral transcription. J Virol 62:4280-7.
    10. Bash, J., W. X. Zong, and C. Gelinas. 1997. c-Rel arrests the proliferation of HeLa cells and affects critical regulators of the Gl/S-phase transition. Mol Cell Biol 17:6526-36.
    11. Baud, V., and M. Karin. 2001. Signal transduction by tumor necrosis factor and
     its relatives. Trends Cell Biol 11:372-7.
    12. Bischoff, F. R., and H. Ponstingl. 1991. Catalysis of guanine nucleotide exchange on Ran by the mitotic regulator RCC1. Nature 354:80-2.
    13. Black, B. E., J. M. Holaska, L. Levesque, B. Ossareh-Nazari, C. Gwizdek, C. Dargemont, and B. M. Paschal. 2001. NXT1 is necessary for the terminal step of Crml-mediated nuclear export. J Cell Biol 152:141-55.
    14. Boivin, G., Z. Coulombe, and S. Rivest. 2002. Intranasal herpes simplex virus type 2 inoculation causes a profound thymidine kinase dependent cerebral inflammatory response in the mouse hindbrain. Eur J Neurosci 16:29-43.
    15. Bonizzi, G., and M. Karin. 2004. The two NF-kappaB activation pathways and their role in innate and adaptive immunity. Trends Immunol 25:280-8.
    16. Bos, £. C, W. Luytjes, H. V. van der Meulen, H. K. Koerten, and W. J. Spaan. 1996. The production of recombinant infectious DI-particles of a murine coronavirus in the absence of helper virus. Virology 218:52-60.
    17. Bour, S., C. Perrin, H. Akari, and K. Strebel. 2001. The human immunodeficiency virus type 1 Vpu protein inhibits NF-kappa B activation by interfering with beta TrCP-mediated degradation of Ikappa B. J Biol Chem 276:15920-8.
    18. Briand, G., B. Barbeau, and M. Tremblay. 1997. Binding of HIV-1 to its receptor induces tyrosine phosphorylation of several CD4-associated proteins, including the phosphatidylinositol 3-kinase. Virology 228:171-9.
    19. Briese, T., C. G. Hatalski, S. Kliche, Y. S. Park, and W. I. Lipkin. 1995. Enzyme-linked immunosorbent assay for detecting antibodies to Borna disease virus-specific proteins. J Clin Microbiol 33:348-51.
    20. Carmo-Fonseca, M., L. Mendes-Soares, and I. Campos. 2000. To be or not to be in the nucleolus. Nat Cell Biol 2:E107-12.
    21. Casal, J. I., M. J. Rodriguez, J. Sarraseca, J. Garcia, J. Plana-Duran, and A. Sanz. 1998. Identification of a common antigenic site in the nucleocapsid protein of European and North American isolates of porcine reproductive and respiratory syndrome virus. Adv Exp Med Biol 440:469-77.
    22. Cavanagh, D., and P. J. Davis. 1988. Evolution of avian coronavirus IBV: sequence of the matrix glycoprotein gene and intergenic region of several serotypes. J Gen Virol 69 ( Pt 3):621-9.
    23. Chan, J. W. M., and C. K. Ng. 2005. Severe Acute Respiratory Syndrome (SARS): A Brief Review With Exploration of the Outcomes, Prognostic Factors and Sequelae. Current Respiratory Medicine Reviews 1:85-92.
    24. Chang, M. S., Y. T. Lu, S. T. Ho, C. C. Wu, T. Y. Wei, C. J. Chen, Y. T. Hsu, P. C. Chu, C. H. Chen, J. M. Chu, Y. L. Jan, C. C. Hung, C. C. Fan, and Y. C. Yang. 2004. Antibody detection of SARS-CoV spike and nucleocapsid protein. Biochem Biophys Res Commun 314:931-6.
    25. Chang, R. Y., and D. A. Brian. 1996. cis Requirement for N-specific protein sequence in bovine coronavirus defective interfering RNA replication. J Virol 70:2201-7.
    26. Chang, Y. J., C. Y. Liu, B. L. Chiang, Y. C. Chao, and C. C. Chen. 2004. Induction of IL-8 release in lung cells via activator protein-1 by recombinant baculovirus displaying severe acute respiratory syndrome-coronavirus spike proteins: identification of two functional regions. J Immunol 173:7602-14.
    27. Che, X. Y., L. W. Qiu, Y. X. Pan, K. Wen, W. Hao, L. Y. Zhang, Y. D. Wang, Z. Y. Liao, X. Hua, V. C. Cheng, and K. Y. Yuen. 2004. Sensitive and specific monoclonal antibody-based capture enzyme immunoassay for detection of nucleocapsid antigen in sera from patients with severe acute respiratory syndrome. J Clin Microbiol 42:2629-35.
    28. Chen, C. J., and S. Makino. 2004. Murine coronavirus replication induces cell cycle arrest in G0/G1 phase. J Virol 78:5658-69.
    29. Chen, C. J., K. Sugiyama, H. Kubo, C. Huang, and S. Makino. 2004. Murine coronavirus nonstructural protein p28 arrests cell cycle in G0/G1 phase. J Virol 78:10410-9.
    30. Chen, F., V. Castranova, and X. Shi. 2001. New insights into the role of nuclear factor-kappaB in cell growth regulation. Am J Pathol 159:387-97.
    31. Chen, G., and D. V. Goeddel. 2002. TNF-R1 signaling: a beautiful pathway. Science 296:1634-5.
    32. Chen, H., B. Coote, S. Attree, and J. A. Hiscox. 2003. Evaluation of a nucleoprotein-based enzyme-linked immunosorbent assay for the detection of antibodies against infectious bronchitis virus. Avian Pathol 32:519-26.
    33. Chen, H., A. Gill, B. K. Dove, S. R. Emmett, C. F. Kemp, M. A. Ritchie, M. Dee, and J. A. Hiscox. 2005. Mass spectroscopic characterization of the
     coronavirus infectious bronchitis virus nucleoprotein and elucidation of the role of phosphorylation in RNA binding by using surface plasmon resonance. J Virol 79:1164-79.
    34. Chen, H., T. Wurm, P. Britton, G. Brooks, and J. A. Hiscox. 2002. Interaction of the coronavirus nucleoprotein with nucleolar antigens and the host cell. J Virol 76:5233-50.
    35. Cheng, G., M. E. Brett, and B. He. 2002. Signals that dictate nuclear, nucleolar, and cytoplasmic shuttling of the gamma(1)34.5 protein of herpes simplex virus type 1.J Virol 76:9434-45.
    36. Cherrington, J. M., and E. S. Mocarski. 1989. Human cytomegalovirus ie 1 transactivates the alpha promoter-enhancer via an 18-base-pair repeat element. J Virol 63:1435-40.
    37. Chouljenko, V. N., K. G. Kousoulas, X. Lin, and J. Storz. 1998. Nucleotide and predicted amino acid sequences of all genes encoded by the 3' genomic portion (9.5 kb) of respiratory bovine coronaviruses and comparisons among respiratory and enteric coronaviruses. Virus Genes 17:33-42.
    38. Chow, K. Y., C. C. Hon, R. K. Hui, R. T. Wong, C. W. Yip, F. Zeng, and F. C. Leung. 2003. Molecular advances in severe acute respiratory syndrome-associated coronavirus (SARS-CoV). Genomics Proteomics Bioinformatics 1:247-62.
    39. Christman, J. W., R. T. Sadikot, and T. S. Blackwell. 2000. The role of nuclear factor-kappa B in pulmonary diseases. Chest 117:1482-7.
    40. Chu, Z. L., Y. A. Shin, J. M. Yang, J. A. DiDonato, and D. W. Ballard. 1999. IKKgamma mediates the interaction of cellular IkappaB kinases with the tax transforming protein of human T cell leukemia virus type 1. J Biol Chem 274:15297-300.
    41. Collins, T., M. A. Read, A. S. Neish, M. Z. Whitley, D. Thanos, and T. Maniatis. 1995. Transcriptional regulation of endothelial cell adhesion molecules: NF-kappa B and cytokine-inducible enhancers. Faseb J 9:899-909.
    42. Collisson, E. W., J. Pei, J. Dzielawa, and S. H. Seo. 2000. Cytotoxic T lymphocytes are critical in the control of infectious bronchitis virus in poultry. Dev Comp Immunol 24:187-200.
    43. Compton, S. R., D. B. Rogers, K. V. Holmes, D. Fertsch, J. Remenick, and J.
     J. McGowan. 1987. In vitro replication of mouse hepatitis virus strain A59. J Virol 61:1814-20.
    44. Da Poian, A. T., A. M. Gomes, R. J. Oliveira, and J. L. Silva. 1996. Migration of vesicular stomatitis virus glycoprotein to the nucleus of infected cells. Proc Natl Acad Sci U S A 93:8268-73.
    45. Dang, C. V., and W. M. Lee. 1989. Nuclear and nucleolar targeting sequences of c-erb-A, c-myb, N-myc, p53, HSP70, and HIV tat proteins. J Biol Chem 264:18019-23.
    46. Davies, H. A., R. R. Dourmashkin, and M. R. Macnaughton. 1981. Ribonucleoprotein of avian infectious bronchitis virus. J Gen Virol 53:67-74.
    47. de Vries, A. A. F., M. C. P. Horzinek, J. M. Rottier, and R. J. De Groot. 1997. The genome organization of nidovirales: similarities and differences between arteri-, toro-, and coronaviruses. Samin Virol:33-47.
    48. Delhase, M., M. Hayakawa, Y. Chen, and M. Karin. 1999. Positive and negative regulation of IkappaB kinase activity through IKKbeta subunit phosphorylation. Science 284:309-13.
    49. Diao, J., R. Garces, and C. D. Richardson. 2001. X protein of hepatitis B virus modulates cytokine and growth factor related signal transduction pathways during the course of viral infections and hepatocarcinogenesis. Cytokine Growth Factor Rev 12:189-205.
    50. DiMango, E., A. J. Ratner, R. Bryan, S. Tabibi, and A. Prince. 1998. Activation of NF-kappaB by adherent Pseudomonas aeruginosa in normal and cystic fibrosis respiratory epithelial cells. J Clin Invest 101:2598-605.
    51. Dosch, T., F. Horn, G. Schneider, F. Kratzer, T. Dobner, J. Hauber, and R. H. Stauber. 2001. The adenovirus type 5 E1B-55K oncoprotein actively shuttles in virus-infected cells, whereas transport of E4orf6 is mediated by a CRM1-independent mechanism. J Virol 75:5677-83.
    52. Dreyfus, D. H., M. Nagasawa, J. C. Pratt, C. A. KeUeher, and E. W. Gelfand. 1999. Inactivation of NF-kappaB by EBV BZLF-1-encoded ZEBRA protein in human T cells. J Immunol 163:6261-8.
    53. Drosten, C, S. Gunther, W. Preiser, S. van der Werf, H. R. Brodt, S. Becker, H. Rabenau, M. Panning, L. Kolesnikova, R. A. Fouchier, A. Berger, A. M. Burguiere, J. Cinatl, M. Eickmann, N. Escriou, K. Grywna, S. Kramme, J. C.
     Manuguerra, S. Muller, V. Rickerts, M. Sturmer, S. Vieth, H. D. Klenk, A. D. Osterhaus, H. Schmitz, and H. W. Doerr. 2003. Identification of a novel coronavirus in patients with severe acute respiratory syndrome. N Engl J Med 348:1967-76.
    54. Dumbar, T. S., G. A. Gentry, and M. O. Olson. 1989. Interaction of nucleolar phosphoprotein B23 with nucleic acids. Biochemistry 28:9495-501.
    55. Dundr, M., G. H. Leno, M. L. Hammarskjold, D. Rekosh, C. Helga-Maria, and M. O. Olson. 1995. The roles of nucleolar structure and function in the subcellular location of the HIV-1 Rev protein. J Cell Sci 108 ( Pt 8):2811-23.
    56. Eleouet, J. F., S. Chilmonczyk, L. Besnardeau, and H. Laude. 1998. Transmissible gastroenteritis coronavirus induces programmed cell death in infected cells through a caspase-dependent pathway. J Virol 72:4918-24.
    57. Eleouet, J. F., E. A. Slee, F. Saurini, N. Castagne, D. Poncet, C. Garrido, E. Solary, and S. J. Martin. 2000. The viral nucleocapsid protein of transmissible gastroenteritis coronavirus (TGEV) is cleaved by caspase-6 and -7 during TGEV-induced apoptosis. J Virol 74:3975-83.
    58. Englmeier, L., J. C. Olivo, and I. W. Mattaj. 1999. Receptor-mediated substrate translocation through the nuclear pore complex without nucleotide triphosphate hydrolysis. Curr Biol 9:30-41.
    59. Enninga, J., D. E. Levy, G. Blobel, and B. M. Fontoura. 2002. Role of nucleoporin induction in releasing an mRNA nuclear export block. Science 295:1523-5.
    60. Enserink, M. 2003. Breakthrough of the year. SARS: a pandemic prevented. Science 302:2045.
    61. Escors, D., J. Ortego, H. Laude, and L. Enjuanes. 2001. The membrane M protein carboxy terminus binds to transmissible gastroenteritis coronavirus core and contributes to core stability. J Virol 75:1312-24.
    62. Fang, X., K. A. Timani, S. Li, Y. Zen, M. Zhao, and L. Ye. 2005. Peptide Domain Involved in the Interaction between Membrane Protein and Nucleocapsid Protein of SARS-Associated Coronavirus. Journal of Biochemistry and Molecular Biology (Article in press).
    63. Favre, D., E. Studer, and M. R. Michel. 1994. Two nucleolar targeting signals present in the N-terminal part of Semliki Forest virus capsid protein. Arch Virol
     137:149-55.
    64. Fischer, U., J. Huber, W. C. Boelens, I. W. Mattaj, and R. Luhrmann. 1995. The HIV-1 Rev activation domain is a nuclear export signal that accesses an export pathway used by specific cellular RNAs. Cell 82:475-83.
    65. Flory, E., M. Kunz, C. Scheller, C. Jassoy, R. Stauber, U. R. Rapp, and S. Ludwig. 2000. Influenza virus-induced NF-kappaB-dependent gene expression is mediated by overexpression of viral proteins and involves oxidative radicals and activation of IkappaB kinase. J Biol Chem 275:8307-14.
    66. Fomproix, N., J. Gebrane-Younes, and D. Hernandez-Verdun. 1998. Effects of anti-fibrillarin antibodies on building of functional nucleoli at the end of mitosis. J Cell Sci 111 (Pt 3):359-72.
    67. Fornerod, M., M. Ohno, M. Yoshida, and I. W. Mattaj. 1997. CRM1 is an export receptor for leucine-rich nuclear export signals. Cell 90:1051-60.
    68. Fouchier, R. A., T. Kuiken, M. Schutten, G. van Amerongen, G. J. van Doornum, B. G. van den Hoogen, M. Peiris, W. Lim, K. Stohr, and A. D. Osterhaus. 2003. Aetiology: Koch's postulates fulfilled for SARS virus. Nature 423:240.
    69. Fu, D. X., Y. L. Kuo, B. Y. Liu, K. T. Jeang, and C. Z. Giam. 2003. Human T-lymphotropic virus type I tax activates I-kappa B kinase by inhibiting I-kappa B kinase-associated serine/threonine protein phosphatase 2A. J Biol Chem 278:1487-93.
    70. Furia, B., L. Deng, K. Wu, S. Baylor, K. Kehn, H. Li, R. Donnelly, T. Coleman, and F. Kashanchi. 2002. Enhancement of nuclear factor-kappa B acetylation by coactivator p300 and HIV-1 Tat proteins. J Biol Chem 277:4973-80.
    71. Gao, W., A. Tamin, A. Soloff, L. D'Aiuto, E. Nwanegbo, P. D. Robbins, W. J. Bellini, S. Barratt-Boyes, and A. Gambotto. 2003. Effects of a SARS-associated coronavirus vaccine in monkeys. Lancet 362:1895-6.
    72. Garcia-Bustos, J., J. Heitman, and M. N. Hall. 1991. Nuclear protein localization. Biochim Biophys Acta 1071:83-101.
    73. Ghosh, S., M. J. May, and E. B. Kopp. 1998. NF-kappa B and Rel proteins: evolutionarily conserved mediators of immune responses. Annu Rev Immunol 16:225-60.
    74. Gil, J., J. Rullas, M. A. Garcia, J. Alcami, and M. Esteban. 2001. The catalytic activity of dsRNA-dependent protein kinase, PKR, is required for NF-kappaB activation. Oncogene 20:385-94.
    75. Gillim-Ross, L., J. Taylor, D. R. Scholl, J. Ridenour, P. S. Masters, and D. E. Wentworth. 2004. Discovery of novel human and animal cells infected by the severe acute respiratory syndrome coronavirus by replication-specific multiplex reverse transcription-PCR. J Clin Microbiol 42:3196-206.
    76. Ginisty, H., H. Sicard, B. Roger, and P. Bouvet 1999. Structure and functions of nucleolin. J Cell Sci 112 ( Pt 6):761-72.
    77. Glodowski, D. R., J. M. Petersen, and J. E. Dahlberg. 2002. Complex nuclear localization signals in the matrix protein of vesicular stomatitis virus. J Biol Chem 277:46864-70.
    78. Godet, M., J. Grosclaude, B. Delmas, and H. Laude. 1994. Major receptor-binding and neutralization determinants are located within the same domain of the transmissible gastroenteritis virus (coronavirus) spike protein. J Virol 68:8008-16.
    79. Gong, G., G. Waris, R. Tanveer, and A. Siddiqui. 2001. Human hepatitis C virus NS5A protein alters intracellular calcium levels, induces oxidative stress, and activates STAT-3 and NF-kappa B. Proc Natl Acad Sci U S A 98:9599-604.
    80. Goodkin, M. L., A. T. Ting, and J. A. Blaho. 2003. NF-kappaB is required for apoptosis prevention during herpes simplex virus type 1 infection. J Virol 77:7261-80.
    81. Gorbalenya, A. E. 2001. Big nidovirus genome. When count and order of domains matter. Adv Exp Med Biol 494:1-17.
    82. Gorlich, D. 1998. Transport into and out of the cell nucleus. Embo J 17:2721 -7.
    83. Gorlich, D., and U. Kutay. 1999. Transport between the cell nucleus and the cytoplasm. Annu Rev Cell Dev Biol 15:607-60.
    84. Gorlich, D., F. Vogel, A. D. Mills, E. Hartmann, and R. A. Laskey. 1995. Distinct functions for the two importin subunits in nuclear protein import. Nature 377:246-8.
    85. Groneberg, D. A., A. Fischer, K. F. Chung, and H. Daniel. 2004. Molecular mechanisms of pulmonary peptidomimetic drug and peptide transport. Am J Respir Cell Mol Biol 30:251-60.
    86. Groneberg, D. A., C. Witt, U. Wagner, K. F. Chung, and A. Fischer. 2003.
     Fundamentals of pulmonary drug delivery. Respir Med 97:382-7.
    87. Groneberg, D. A., L. Zhang, T. Welte, P. Zabel, and K. F. Chung. 2003. Severe acute respiratory syndrome: global initiatives for disease diagnosis. Qjm 96:845-52.
    88. Guan, M., H. Y. Chen, S. Y. Foo, Y. J. Tan, P. Y. Goh, and S. H. Wee. 2004. Recombinant protein-based enzyme-linked immunosorbent assay and immunochromatographic tests for detection of immunoglobulin G antibodies to severe acute respiratory syndrome (SARS) coronavirus in SARS patients. Clin Diagn Lab Immunol 11:287-91.
    89. Guan, Y., B. J. Zheng, Y. Q. He, X. L. Liu, Z. X. Zhuang, C. L. Cheung, S. W. Luo, P. H. Li, L. J. Zhang, Y. J. Guan, K. M. Butt, K. L. Wong, K. W. Chan, W. Lim, K. F. Shortridge, K. Y. Yuen, J. S. Peiris, and L. L. Poon. 2003. Isolation and characterization of viruses related to the SARS coronavirus from animals in southern China. Science 302:276-8.
    90. Guo, J. P., M. Petric, W. Campbell, and P. L. McGeer. 2004. SARS corona virus peptides recognized by antibodies in the sera of convalescent cases. Virology 324:251-6.
    91. Guo, Y. X., K. Dallmann, and J. Kwang. 2003. Identification of nucleolus localization signal of betanodavirus GGNNV protein alpha. Virology 306:225-35.
    92. Guy, J. S., J. J. Breslin, B. Breuhaus, S. Vivrette, and L. G. Smith. 2000. Characterization of a coronavirus isolated from a diarrheic foal. J Clin Microbiol 38:4523-6.
    93. Hart, L. A., V. L. Krishnan, I. M. Adcock, P. J. Barnes, and K. F. Chung. 1998. Activation and localization of transcription factor, nuclear factor-kappaB, in asthma. Am J Respir Crit Care Med 158:1585-92.
    94. He, R., F. Dobie, M. Ballantine, A. Leeson, Y. Li, N. Bastien, T. Cutts, A. Andonov, J. Cao, T. F. Booth, F. A. Plummer, S. Tyler, L. Baker, and X. Li. 2004. Analysis of multimerization of the SARS coronavirus nucleocapsid protein. Biochem Biophys Res Commun 316:476-83.
    95. He, R., A. Leeson, A. Andonov, Y. Li, N. Bastien, J. Cao, C. Osiowy, F. Dobie, T. Cutts, M. Ballantine, and X. Li. 2003. Activation of AP-1 signal transduction pathway by SARS coronavirus nucleocapsid protein. Biochem Biophys Res Commun 311:870-6.
    96. He, R., A. Leeson, M. Ballantine, A. Andonov, L. Baker, F. Dobie, Y. Li, N. Bastien, H. Feldmann, U. Strocher, S. Theriault, T. Cutts, J. Cao, T. F. Booth, F. A. Plummer, S. Tyler, and X. Li. 2004. Characterization of protein-protein interactions between the nucleocapsid protein and membrane protein of the SARS coronavirus. Virus Res 105:121-5.
    97. Henderson, B. R., and A. Eleftheriou. 2000. A comparison of the activity, sequence specificity, and CRM1-dependence of different nuclear export signals. Exp Cell Res 256:213-24.
    98. Heymann, D. L., and G. Rodier. 2004. Global surveillance, national surveillance, and SARS. Emerg Infect Dis 10:173-5.
    99. Hicks, G. R., and N. V. Raikhel. 1995. Protein import into the nucleus: an integrated view. Annu Rev Cell Dev Biol 11:155-88.
    100. Hildt, E., B. Munz, G. Saner, K. Reifenberg, and P. H. Hofschneider. 2002. The PreS2 activator MHBs(t) of hepatitis B virus activates c-raf-l/Erk2 signaling in transgenic mice. Embo J 21:525-35.
    101. Hirano, M., S. Kaneko, T. Yamashita, H. Luo, W. Qin, Y. Shirota, T. Nomura, K. Kobayashi, and S. Murakami. 2003. Direct interaction between nucleolin and hepatitis C virus NS5B. J Biol Chem 278:5109-15.
    102. Hiscott, J., H. Kwon, and P. Genin. 2001. Hostile takeovers: viral appropriation of the NF-kappaB pathway. J Clin Invest 107:143-51.
    103. Hiscox, J. A. 2002. The nucleolus~a gateway to viral infection? Arch Virol 147:1077-89.
    104. Hiscox, J. A., D. Cavanagh, and P. Britton. 1995. Quantification of individual subgenomic mRNA species during replication of the coronavirus transmissible gastroenteritis virus. Virus Res 36:119-30.
    105. Hiscox, J. A., T. Wurm, L. Wilson, P. Britton, D. Cavanagh, and G. Brooks. 2001. The coronavirus infectious bronchitis virus nucleoprotein localizes to the nucleolus. J Virol 75:506-12.
    106. Ho, Y., P. H. Lin, C. Y. Liu, S. P. Lee, and Y. C. Chao. 2004. Assembly of human severe acute respiratory syndrome coronavirus-like particles. Biochem Biophys Res Commun 318:833-8.
    107. Hoeflich, K. P., J. Luo, E. A. Rubie, M. S. Tsao, O. Jin, and J. R. Woodgett. 2000. Requirement for glycogen synthase kinase-3beta in cell survival and NF-
     kappaB activation. Nature 406:86-90.
    108. Holmes, K. V., and L. Enjuanes. 2003. Virology. The SARS coronavirus: a postgenomic era. Science 300:1377-8.
    109. Hope, T. J. 1999. The ins and outs of HIV Rev. Arch Biochem Biophys 365:186-91.
    110. Hsueh, P. R., P. J. Chen, C. H. Hsiao, S. H. Yeh, W. C. Cheng, J. L. Wang, B. L. Chiang, S. C. Chang, F. Y. Chang, W. W. Wong, C. L. Kao, and P. C. Yang. 2004. Patient data, early SARS epidemic, Taiwan. Emerg Infect Dis 10:489-93.
    111. Huang, Q., L. Yu, A. M. Petros, A. Gunasekera, Z. Liu, N. Xu, P. Hajduk, J. Mack, S. W. Fesik, and E. T. Olejniczak. 2004. Structure of the N-terminal RNA-binding domain of the SARS CoV nucleocapsid protein. Biochemistry 43:6059-63.
    112. Huen, D. S., S. A. Henderson, D. Croom-Carter, and M. Rowe. 1995. The Epstein-Barr virus latent membrane protein-1 (LMPl) mediates activation of NF-kappa B and cell surface phenotype via two effector regions in its carboxy-terminal cytoplasmic domain. Oncogene 10:549-60.
    113. Ishii, T., H. Kwon, J. Hiscott, G. Mosialos, and A. E. Koromilas. 2001. Activation of the I kappa B alpha kinase (IKK) complex by double-stranded RNA-binding defective and catalytic inactive mutants of the interferon-inducible protein kinase PKR. Oncogene 20:1900-12.
    114. Israel, A. 2000. The IKK complex: an integrator of all signals that activate NF-kappaB? Trends Cell Biol 10:129-33.
    115. Ivanov, K. A., V. Thiel, J. C. Dobbe, Y. van der Meer, E. J. Snijder, and J. Ziebuhr. 2004. Multiple enzymatic activities associated with severe acute respiratory syndrome coronavirus helicase. J Virol 78:5619-32.
    116. Jakob, R. 1994. Nucleolar accumulation of Semliki Forest virus nucleocapsid C protein: influence of metabolic status, cytoskeleton and receptors. J Med Microbiol 40:389-92.
    117. Jans, D. A., and S. Hubner. 1996. Regulation of protein transport to the nucleus: central role of phosphorylation. Physiol Rev 76:651-85.
    118. Johnny W.M. Chan , C. K. N. 2005. Severe Acute Respiratory Syndrome (SARS): A Brief Review With Exploration of the Outcomes, Prognostic Factors
     and Sequelae. Current Respiratory Medicine Reviews 1:85-92.
    119. Johnson, R. A., X. Wang, X. L. Ma, S. M. Huong, and £. S. Huang. 2001. Human cytomegalovirus up-regulates the phosphatidylinositol 3-kinase (PI3-K) pathway: inhibition of PI3-K activity inhibits viral replication and virus-induced signaling. J Virol 75:6022-32.
    120. Juretic, N., J. F. Santibanez, C. Hurtado, and J. Martinez. 2001. ERK 1,2 and p38 pathways are involved in the proliferative stimuli mediated by urokinase in osteoblastic SaOS-2 cell line. J Cell Biochem 83:92-8.
    121. Kaffman, A., and E. K. O'Shea. 1999. Regulation of nuclear localization: a key to a door. Annu Rev Cell Dev Biol 15:291-339.
    122. Kamahora, T., L. H. Soe, and M. M. Lai. 1989. Sequence analysis of nucleocapsid gene and leader RNA of human coronavirus OC43. Virus Res 12:1-9.
    123. Karin, M., and Y. Ben-Neriah. 2000. Phosphorylation meets ubiquitination: the control of NF-[kappa]B activity. Annu Rev Immunol 18:621-63.
    124. Karin, M., Y. Cao, F. R. Greten, and Z. W. Li. 2002. NF-kappaB in cancer: from innocent bystander to major culprit. Nat Rev Cancer 2:301-10.
    125. Karin, M., and A. Lin. 2002. NF-kappaB at the crossroads of life and death. Nat Immunol 3:221-7.
    126. Kawanishi, M. 1997. Expression of Epstein-Barr virus latent membrane protein 1 protects Jurkat T cells from apoptosis induced by serum deprivation. Virology 228:244-50.
    127. Kim, H., Y. H. Lee, J. Won, and Y. Yun. 2001. Through induction of juxtaposition and tyrosine kinase activity of Jakl, X-gene product of hepatitis B virus stimulates Ras and the transcriptional activation through AP-1, NF-kappaB, and SRE enhancers. Biochem Biophys Res Commun 286:886-94.
    128. Kim, T. W., J. H. Lee, C. F. Hung, S. Peng, R. Roden, M. C. Wang, R. Viscidi, Y. C. Tsai, L. He, P. J. Chen, D. A. Boyd, and T. C. Wu. 2004. Generation and characterization of DNA vaccines targeting the nucleocapsid protein of severe acute respiratory syndrome coronavirus. J Virol 78:4638-45.
    129. King, B., and D. A. Brian. 1982. Bovine coronavirus structural proteins. J Virol 42:700-7.
    130. Komeili, A., and E. K. O'Shea. 1999. Roles of phosphorylation sites in
     regulating activity of the transcription factor Pho4. Science 284:977-80.
    131. Konnikova, L., M. Kotecki, M. M. Kruger, and B. H. Cochran. 2003. Knockdown of STAT3 expression by RNAi induces apoptosis in astrocytoma cells. BMC Cancer 3:23.
    132. Kopp, E. B., and S. Ghosh. 1995. NF-kappa B and rel proteins in innate immunity. Adv Immunol 58:1-27.
    133. Krokhin, O., Y. Li, A. Andonov, H. Feldmann, R. Flick, S. Jones, U. Stroeher, N. Bastien, K. V. Dasuri, K. Cheng, J. N. Simonsen, H. Perreault, J. Wilkins, W. Ens, F. Plummer, and K. G. Standing. 2003. Mass Spectrometric Characterization of Proteins from the SARS Virus: A Preliminary Report. Mol Cell Proteomics 2:346-56.
    134. Ksiazek, T. G., D. Erdman, C. S. Goldsmith, S. R. Zaki, T. Peret, S. Emery, S. Tong, C. Urbani, J. A. Comer, W. Lim, P. E. Rollin, S. F. Dowell, A. E. Ling, C. D. Humphrey, W. J. Shieh, J. Guarner, C. D. Paddock, P. Rota, B. Fields, J. DeRisi, J. Y. Yang, N. Cox, J. M. Hughes, J. W. LeDuc, W. J. Bellini, and L. J. Anderson. 2003. A novel coronavirus associated with severe acute respiratory syndrome. N Engl J Med 348:1953-66.
    135. Kubota, S., H. Siomi, T. Satoh, S. Endo, M. Maki, and M. Hatanaka. 1989. Functional similarity of HIV-I rev and HTLV-I rex proteins: identification of a new nucleolar-targeting signal in rev protein. Biochem Biophys Res Commun 162:963-70.
    136. Kuo, L., and P. S. Masters. 2002. Genetic evidence for a structural interaction between the carboxy termini of the membrane and nucleocapsid proteins of mouse hepatitis virus. J Virol 76:4987-99.
    137. LaCasse, E. C, and Y. A. Lefebvre. 1995. Nuclear localization signals overlap DNA- or RNA-binding domains in nucleic acid-binding proteins. Nucleic Acids Res 23:1647-56.
    138. Lai M. M., H. K. V. 2001. Coronaviruses, p. 1163-1185. In P. M. h. D M Knipe (ed.), In Fields Virology. Lippincott, Philadelphia, PA.
    139. Laity, J. H., B. M. Lee, and P. E. Wright. 2001. Zinc finger proteins: new insights into structural and functional diversity. Curr Opin Struct Biol 11:39-46.
    140. LaMonica, R., S. S. Kocer, J. Nazarova, W. Bowling, E. Geimonen, R. D. Shaw, and E. R. Mackow. 2001. VP4 differentially regulates TRAF2 signaling,
     disengaging JNK activation while directing NF-kappa B to effect rotavirus-specific cellular responses. J Biol Chem 276:19889-96.
    141. Landini, M. P. 1993. New approaches and perspectives in cytomegalovirus diagnosis. Prog Med Virol 40:157-77.
    142. Lapps, W., B. G. Hogue, and D. A. Brian. 1987. Sequence analysis of the bovine coronavirus nucleocapsid and matrix protein genes. Virology 157:47-57.
    143. Lau, S. K., P. C. Woo, B. H. Wong, H. W. Tsoi, G. K. Woo, R. W. Poon, K. H. Chan, W. I. Wei, J. S. Peiris, and K. Y. Yuen. 2004. Detection of severe acute respiratory syndrome (SARS) coronavirus nucleocapsid protein in sars patients by enzyme-linked immunosorbent assay. J Clin Microbiol 42:2884-9.
    144. Laude, H., and P. S. Masters. 1995. The coronavirus nucleacapsid protein, p. 141-163. In S. G. Siddell (ed.), The coronaviridae. Plenum press, New York.
    145. Lee, C. H., S. C. Chang, C. J. Chen, and M. F. Chang. 1998. The nucleolin binding activity of hepatitis delta antigen is associated with nucleolus targeting. J Biol Chem 273:7650-6.
    146. Lee, C. H., R. F. Chen, J. W. Liu, W. T. Yeh, J. C. Chang, P. M. Liu, H. L. Eng, M. C. Lin, and K. D. Yang. 2004. Altered p38 mitogen-activated protein kinase expression in different leukocytes with increment of immunosuppressive mediators in patients with severe acute respiratory syndrome. J Immunol 172:7841-7.
    147. Lee, N., D. Hui, A. Wu, P. Chan, P. Cameron, G. M. Joynt, A. Ahuja, M. Y. Yung, C. B. Leung, K. F. To, S. F. Lui, C. C. Szeto, S. Chung, and J. J. Sung. 2003. A major outbreak of severe acute respiratory syndrome in Hong Kong. N EnglJ Med 348:1986-94.
    148. Leung, D. T., F. C. Tam, C. H. Ma, P. K. Chan, J. L. Cheung, H. Niu, J. S. Tarn, and P. L. Lim. 2004. Antibody response of patients with severe acute respiratory syndrome (SARS) targets the viral nucleocapsid. J Infect Dis 190:379-86.
    149. Li, G., X. Chen, and A. Xu. 2003. Profile of specific antibodies to the SARS-associated coronavirus. N Engl J Med 349:508-9.
    150. Li, T., Y. Zhang, L. Fu, C. Yu, X. Li, Y. Li, X. Zhang, Z. Rong, Y. Wang, H. Ning, R. Liang, W. Chen, L. A. Babiuk, and Z. Chang. 2005. siRNA targeting the Leader sequence of SARS-CoV inhibits virus replication. Gene Ther.
    151. Li, Y. P., R. K. Busch, B. C. Valdez, and H. Busch. 1996. C23 interacts with B23, a putative nucleolar-localization-signal-binding protein. Eur J Biochem 237:153-8.
    152. Lin, G. Y., and R. A. Lamb. 2000. The paramyxovirus simian virus 5 V protein slows progression of the cell cycle. J Virol 74:9152-66.
    153. Lischka, P., O. Rosorius, E. Trommer, and T. Stamminger. 2001. A novel transferable nuclear export signal mediates CRM1-independent nucleocytoplasmic shuttling of the human cytomegalovirus transactivator protein pUL69. Embo J 20:7271-83.
    154. Liu, B., M. Fang, Y. Lu, G. B. Mills, and Z. Fan. 2001. Involvement of JNK-mediated pathway in EGF-mediated protection against paclitaxel-induced apoptosis in SiHa human cervical cancer cells. Br J Cancer 85:303-11.
    155. Liu, C, T. Kokuho, T. Kubota, S. Watanabe, S. Inumaru, Y. Yokomizo, and T. Onodera. 2001. DNA mediated immunization with encoding the nucleoprotein gene of porcine transmissible gastroenteritis virus. Virus Res 80:75-82.
    156. Liu, C, H. Y. Xu, and D. X. Liu. 2001. Induction of caspase-dependent apoptosis in cultured cells by the avian coronavirus infectious bronchitis virus. J Virol 75:6402-9.
    157. Liu, G., S. Hu, Y. Hu, P. Chen, J. Yin, J. Wen, J. Wang, L. Lin, J. Liu, B. You, Y. Yin, S. Li, H. Wang, Y. Ren, J. Ji, X. Zhao, Y. Sun, X. Zhang, J. Fang, S. Liu, J. Yu, H. Zhu, and H. Yang. 2003. The C-terminal portion of the nucleocapsid protein demonstrates SARS-CoV antigenicity. Genomics Proteomics Bioinformatics 1:193-7.
    158. Liu, H., Y. Ma, S. M. Cole, C. Zander, K. H. Chen, J. Karras, and R. M. Pope. 2003. Serine phosphorylation of STAT3 is essential for Mcl-1 expression and macrophage survival. Blood 102:344-52.
    159. Liu, J., M. D. Hebert, Y. Ye, D. J. Templeton, H. Kung, and A. G. Matera. 2000. Cell cycle-dependent localization of the CDK2-cyclin E complex in Cajal (coiled) bodies. J Cell Sci 113 ( Pt 9): 1543-52.
    160. Liu, J. L., L. F. Lee, Y. Ye, Z. Qian, and H. J. Kung. 1997. Nucleolar and nuclear localization properties of a herpesvirus bZIP oncoprotein, MEQ. J Virol 71:3188-96.
    161. Liu, R. S., K. Y. Yang, J. Lin, Y. W. Lin, Z. H. Zhang, J. Zhang, and N. S. Xia. 2004. High-yield expression of recombinant SARS coronavirus nucleocapsid protein in methylotrophic yeast Pichia pastoris. World J Gastroenterol 10:3602-7.
    162. Lomniczi, B., and J. Morser. 1981. Polypeptides of infectious bronchitis virus. I. Polypeptides of the virion. J Gen Virol 55:155-64.
    163. Luftig, M., T. Yasui, V. Soni, M. S. Kang, N. Jacobson, E. Cahir-McFarland, B. Seed, and E. Kieff. 2004. Epstein-Barr virus latent infection membrane protein 1 TRAF-binding site induces NIK/IKK alpha-dependent noncanonical NF-kappaB activation. Proc Natl Acad Sci U S A 101:141-6.
    164. Lundberg, M., and M. Johansson. 2001. Is VP22 nuclear homing an artifact? Nat Biotechnol 19:713-4.
    165. Lundberg, M., and M. Johansson. 2002. Positively charged DNA-binding proteins cause apparent cell membrane translocation. Biochem Biophys Res Commun 291:367-71.
    166. Macara, I. G. 2001. Transport into and out of the nucleus. Microbiol Mol Biol Rev 65:570-94, table of contents.
    167. Makris, C, J. L. Roberts, and M. Karin. 2002. The carboxyl-terminal region of IkappaB kinase gamma (IKKgamma) is required for full IKK activation. Mol Cell Biol 22:6573-81.
    168. Marasco, W. A., A. M. Szilvay, K. H. Kalland, D. G. Helland, H. M. Reyes, and R. J. Walter. 1994. Spatial association of HIV-1 tat protein and the nucleolar transport protein B23 in stably transfected Jurkat T-cells. Arch Virol 139:133-54.
    169. Marra, M. A., S. J. Jones, C. R. Astell, R. A. Holt, A. Brooks-Wilson, Y. S. Butterfield, J. Khattra, J. K. Asano, S. A. Barber, S. Y. Chan, A. Cloutier, S. M. Coughlin, D. Freeman, N. Girn, O. L. Griffith, S. R. Leach, M. Mayo, H. McDonald, S. B. Montgomery, P. K. Pandoh, A. S. Petrescu, A. G. Robertson, J. E. Schein, A. Siddiqui, D. E. Smailus, J. M. Stott, G. S. Yang, F. Plummer, A. Andonov, H. Artsob, N. Bastien, K. Bernard, T. F. Booth, D. Bowness, M. Czub, M. Drebot, L. Fernando, R. Flick, M. Garbutt, M. Gray, A. Grolla, S. Jones, H. Feldmann, A. Meyers, A. Kabani, Y. Li, S. Normand, U. Stroher, G. A. Tipples, S. Tyler, R. Vogrig, D. Ward, B. Watson, R. C. Brunham, M. Krajden, M. Petric, D. M. Skowronski, C. Upton, and R. L. Roper. 2003. The
     Genome sequence of the SARS-associated coronavirus. Science 300:1399-404.
    170. Martina, B. E., B. L. Haagmans, T. Kuiken, R. A. Fouchicr, G. F. Rimmelzwaan, G. Van Amerongen, J. S. Peiris, W. Lim, and A. D. Osterhaus. 2003. Virology. SARS virus infection of cats and ferrets. Nature 425:915.
    171. Mastronarde, J. G., B. He, M. M. Monick, N. Mukaida, K. Matsushima, and G. W. Hunninghake. 1996. Induction of interleukin (IL)-8 gene expression by respiratory syncytial virus involves activation of nuclear factor (NF)-kappa B and NF-IL-6. J Infect Dis 174:262-7.
    172. Matsuda, M., N. Matsuda, A. Watanabe, R. Fujisawa, K. Yamamoto, and M. Masuda. 2003. Cell cycle arrest induction by an adenoviral vector expressing HIV-1 Vpr in bovine and feline cells. Biochem Biophys Res Commun 311:748-53.
    173. Matthews, D. A. 2001. Adenovirus protein V induces redistribution of nucleolin and B23 from nucleolus to cytoplasm. J Virol 75:1031-8.
    174. Michel, M. R., M. Elgizoli, Y. Dai, R. Jakob, H. Koblet, and A. P. Arrigo. 1990. Karyophilic properties of Semliki Forest virus nucleocapsid protein. J Virol 64:5123-31.
    175. Miyamoto, S., and I. M. Verma. 1995. Rel/NF-kappa B/I kappa B story. Adv Cancer Res 66:255-92.
    176. Miyazaki, Y., T. Takamatsu, T. Nosaka, S. Fujita, T.E. Martin, and M. Hatanaka. 1995. The cytotoxicity of human immunodeficiency virus type 1 Rev: implications for its interaction with the nucleolar protein B23. Exp Cell Res 219:93-101.
    177. Mizutani, T., S. Fukushi, M. Murakami, T. Hirano, M. Saijo, I. Kurane, and S. Morikawa. 2004. Tyrosine dephosphorylation of STAT3 in SARS coronavirus-infected Vero E6 cells. FEBS Lett 577:187-92.
    178. Mizutani, T., S. Fukushi, M. Saijo, I. Kurane, and S. Morikawa. 2004. Importance of Akt signaling pathway for apoptosis in SARS-CoV-infected Vero E6 cells. Virology 327:169-74.
    179. Mizutani, T., S. Fukushi, M. Saijo, I. Kurane, and S. Morikawa. 2004. Phosphorylation of p38 MAPK and its downstream targets in SARS coronavirus-infected cells. Biochem Biophys Res Commun 319:1228-34.
    180. Mogensen, T. H., and S. R. Paludan. 2001. Molecular pathways in virus-
     induced cytokine production. Microbiol Mol Biol Rev 65:131-50.
    181. Mohandas, D. V., and S. Dales. 1991. Endosomal association of a protein phosphatase with high dephosphorylating activity against a coronavirus nucleocapsid protein. FEBS Lett 282:419-24.
    182. Molenkamp, R., and W. J. Spaan. 1997. Identification of a specific interaction between the coronavirus mouse hepatitis virus A59 nucleocapsid protein and packaging signal. Virology 239:78-86.
    183. Molenkamp, R., H. van Tol, B. C. Rozier, Y. van der Meer, W. J. Spaan, and E. J. Snijder. 2000. The arterivirus replicase is the only viral protein required for genome replication and subgenomic mRNA transcription. J Gen Virol 81:2491-6.
    184. Mukaida, N., Y. Mahe, and K. Matsushima. 1990. Cooperative interaction of nuclear factor-kappa B- and cis-regulatory enhancer binding protein-like factor binding elements in activating the interleukin-8 gene by pro-inflammatory cytokines. J Biol Chem 265:21128-33.
    185. Myint, B. J. 1995. Human coronaviruses infections, p. 389-401. In S. S. G (ed.), In The coronaviridae. Plenum press.
    186. Nabel, G., and D. Baltimore. 1987. An inducible transcription factor activates expression of human immunodeficiency virus in T cells. Nature 326:711-3.
    187. Nakai, K., and M. Kanehisa. 1992. A knowledge base for predicting protein localization sites in eukaryotic cells. Genomics 14:897-911.
    188. Naniche, D., S. I. Reed, and M. B. Oldstone. 1999. Cell cycle arrest during measles virus infection: a GO-like block leads to suppression of retinoblastoma protein expression. J Virol 73:1894-901.
    189. Narayanan, K., C. J. Chen, J. Maeda, and S. Makino. 2003. Nucleocapsid-independent specific viral RNA packaging via viral envelope protein and viral RNA signal. J Virol 77:2922-7.
    190. Nelson, G. W., S. A. Stohlman, and S. M. Tahara. 2000. High affinity interaction between nucleocapsid protein and leader/intergenic sequence of mouse hepatitis virus RNA. J Gen Virol 81:181-8.
    191. Ng, M. L., S. H. Tan, E. E. See, E. E. Ooi, and A. E. Ling. 2003. Proliferative growth of SARS coronavirus in Vero E6 cells. J Gen Virol 84:3291-303.
    192. Ning, B., and C. Shih. 2004. Nucleolar localization of human hepatitis B virus capsid protein. J Virol 78:13653-68.
    193. Nishio, M., M. Tsurudome, M. Ito, M. Kawano, S. Kusagawa, H. Komada, and Y. Ito. 1999. Isolation of monoclonal antibodies directed against the V protein of human parainfluenza virus type 2 and localization of the V protein in virus-infected cells. Med Microbiol Immunol (Berl) 188:79-82.
    194. Nishizawa, M., T. Myojin, Y. Nishino, Y. Nakai, M. Kamata, and Y. Aida. 1999. A carboxy-terminally truncated form of the Vpr protein of human immunodeficiency virus type 1 retards cell proliferation independently of G(2) arrest of the cell cycle. Virology 263:313-22.
    195. Ogg, S. C, and A. I. Lamond. 2002. Cajal bodies and coilin--moving towards function. J Cell Biol 159:17-21.
    196. Okuda, M., H. F. Horn, P. Tarapore, Y. Tokuyama, A. G. Smulian, P. K. Chan, E. S. Knudsen, I. A. Hofmann, J. D. Snyder, K. E. Bove, and K. Fukasawa. 2000. Nucleophosmin/B23 is a target of CDK2/cyclin E in centrosome duplication. Cell 103:127-40.
    197. Okuwaki, M., A. Iwamatsu, M. Tsujimoto, and K. Nagata. 2001. Identification of nucleophosmin/B23, an acidic nucleolar protein, as a stimulatory factor for in vitro replication of adenovirus DNA complexed with viral basic core proteins. J Mol Biol 311:41-55.
    198. Olson, M. O., M. Dundr, and A. Szebeni. 2000. The nucleolus: an old factory with unexpected capabilities. Trends Cell Biol 10:189-96.
    199. O'Mahony, A. M., M. Montano, K. Van Beneden, L. F. Chen, and W. C. Greene. 2004. Human T-cell lymphotropic virus type 1 tax induction of biologically Active NF-kappaB requires IkappaB kinase-1-mediated phosphorylation of RelA/p65. J Biol Chem 279:18137-45.
    200. Op De Beeck, A., and P. Caillet-Fauquet. 1997. Viruses and the cell cycle. Prog Cell Cycle Res 3:1-19.
    201. Ossareh-Nazari, B., C. Gwizdek, and C. Dargemont. 2001. Protein export from the nucleus. Traffic 2:684-9.
    202. Owen, K. E., and R. J. Kuhn. 1996. Identification of a region in the Sindbis virus nucleocapsid protein that is involved in specificity of RNA encapsidation. J Virol 70:2757-63.
    203. Pahl, H. L. 1999. Activators and target genes of Rel/NF-kappaB transcription factors. Oncogene 18:6853-66.
    204. Paine, P. L., L. C. Moore, and S. B. Horowitz. 1975. Nuclear envelope permeability. Nature 254:109-14.
    205. Paraskeva, E., E. Izaurralde, F. R. Bischoff, J. Huber, U. Kutay, E. Hartmann, R. Luhrmann, and D. Gorlich. 1999. CRM1-mediated recycling of snurportin 1 to the cytoplasm. J Cell Biol 145:255-64.
    206. Patel, A., J. Hanson, T. I. McLean, J. Olgiate, M. Hilton, W. E. Miller, and S. L. Bachenheimer. 1998. Herpes simplex type 1 induction of persistent NF-kappa B nuclear translocation increases the efficiency of virus replication. Virology 247:212-22.
    207. Patterson, J. B., T. I. Cornu, J. Redwine, S. Dales, H. Lewicki, A. Holz, D. Thomas, M. A. Billeter, and M. B. Oldstone. 2001. Evidence that the hypermutated M protein of a subacute sclerosing panencephalitis measles virus actively contributes to the chronic progressive CNS disease. Virology 291:215-25.
    208. Peeples, M. E., C. Wang, K. C. Gupta, and N. Coleman. 1992. Nuclear entry and nucleolar localization of the Newcastle disease virus (NDV) matrix protein occur early in infection and do not require other NDV proteins. J Virol 66:3263-9.
    209. Pei, H., J. Liu, Y. Cheng, C. Sun, C. Wang, Y. Lu, J. Ding, J. Zhou, and H. Xiang. 2005. Expression of SARS-coronavirus nucleocapsid protein in Escherichia coli and Lactococcus lactis for serodiagnosis and mucosal vaccination. Appl Microbiol Biotechnol.
    210. Peiris, J. S., C. M. Chu, V. C. Cheng, K. S. Chan, I. F. Hung, L. L. Poon, K. I. Law, B. S. Tang, T. Y. Hon, C. S. Chan, K. H. Chan, J. S. Ng, B. J. Zheng, W. L. Ng, R. W. Lai, Y. Guan, and K. Y. Yuen. 2003. Clinical progression and viral load in a community outbreak of coronavirus-associated SARS pneumonia: a prospective study. Lancet 361:1767-72.
    211. Peiris, J. S., S. T. Lai, L. L. Poon, Y. Guan, L. Y. Yam, W. Lim, J. Nicholls, W. K. Yee, W. W. Yan, M. T. Cheung, V. C. Cheng, K. H. Chan, D. N. Tsang, R. W. Yung, T. K. Ng, and K. Y. Yuen. 2003. Coronavirus as a possible cause of severe acute respiratory syndrome. Lancet 361:1319-25.
    212. Peng, D., C. A. Koetzner, T. McMahon, Y. Zhu, and P. S. Masters. 1995. Construction of murine coronavirus mutants containing interspecies chimeric nucleocapsid proteins. J Virol 69:5475-84.
    213. Peranen, J., M. Rikkonen, P. Liljestrom, and L. Kaariainen. 1990. Nuclear
     localization of Semliki Forest virus-specific nonstructural protein nsP2. J Virol 64:1888-96.
    214. Platani, M., I. Goldberg, A. I. Lamond, and J. R. Swedlow. 2002. Cajal body dynamics and association with chromatin are ATP-dependent. Nat Cell Biol 4:502-8.
    215. Platani, M., I. Goldberg, J. R. Swedlow, and A. I. Lamond. 2000. In vivo analysis of Cajal body movement, separation, and joining in live human cells. J Cell Biol 151:1561-74.
    216. Poggioli, G. J., C. Keefer, J. L. Connolly, T. S. Dermody, and K. L. Tyler. 2000. Reovirus-induced G(2)/M cell cycle arrest requires sigmals and occurs in the absence of apoptosis. J Virol 74:9562-70.
    217. Poon, L. L., K. H. Chan, O. K. Wong, W. C. Yam, K. Y. Yuen, Y. Guan, Y. M. Lo, and J. S. Peiris. 2003. Early diagnosis of SARS coronavirus infection by real time RT-PCR. J Clin Virol 28:233-8.
    218. Poon, L. L., Y. Guan, J. M. Nicholls, K. Y. Yuen, and J. S. Peiris. 2004. The aetiology, origins, and diagnosis of severe acute respiratory syndrome. Lancet Infect Dis 4:663-71.
    219. Poon, L. L., O. K. Wong, K. H. Chan, W. Luk, K. Y. Yuen, J. S. Peiris, and Y. Guan. 2003. Rapid diagnosis of a coronavirus associated with severe acute respiratory syndrome (SARS). Clin Chem 49:953-5.
    220. Poutanen, S. M., D. E. Low, B. Henry, S. Finkelstein, D. Rose, K. Green, R. Tellier, R. Draker, D. Adachi, M. Ayers, A. K. Chan, D. M. Skowronski, I. Salit, A. E. Simor, A. S. Slutsky, P. W. Doyle, M. Krajden, M. Petric, R. C. Brunham, and A. J. McGeer. 2003. Identification of severe acute respiratory syndrome in Canada. N Engl J Med 348:1995-2005.
    221. Puvion-Dutilleul, F., and M. E. Chris tensen. 1993. Alterations of fibrillarin distribution and nucleolar ultrastructure induced by adenovirus infection. Eur J Cell Biol 61:168-76.
    222. Qi, Y., Y. Zheng, C. L. Shu, L. Jiang, Y. Hu, P. Y. Mao, and Y. Cheng. 2004 [The expression and activity detection of a variant N protein of SARS-CoV]. Xi Bao Yu Fen Zi Mian Yi Xue Za Zhi 20:422-4.
    223. Qinfen, Z., C. Jinming, H. Xiaojun, Z. Huanying, H. Jicheng, F. Ling, L. Kunpeng, and Z. Jingqiang. 2004. The life cycle of SARS coronavirus in Vero
     E6 cells. J Med Virol 73:332-7.
    224. Re, F., D. Braaten, E. K. Franke, and J. Luban. 1995. Human immunodeficiency virus type 1 Vpr arrests the cell cycle in G2 by inhibiting the activation of p34cdc2-cyclin B. J Virol 69:6859-64.
    225. Reilley, B., M. Van Herp, D. Sermand, and N. Dentico. 2003. SARS and Carlo Urbani. N Engl J Med 348:1951-2.
    226. Revilla, Y., M. Callejo, J. M. Rodriguez, E. Culebras, M. L. Nogal, M. L. Salas, E. Vinuela, and M. Fresno. 1998. Inhibition of nuclear factor kappaB activation by a virus-encoded IkappaB-like protein. J Biol Chem 273:5405-11.
    227. Richardson, W. D., A. D. Mills, S. M. Dilworth, R. A. Laskey, and C. Dingwall. 1988. Nuclear protein migration involves two steps: rapid binding at the nuclear envelope followed by slower translocation through nuclear pores. Cell 52:655-64.
    228. Risco, C, I. M. Anton, L. Enjuanes, and J. L. Carrascosa. 1996. The transmissible gastroenteritis coronavirus contains a spherical core shell consisting of M and N proteins. J Virol 70:4773-7.
    229. Roberts, B. L., W. D. Richardson, and A. E. Smith. 1987. The effect of protein context on nuclear location signal function. Cell 50:465-75.
    230. Rong, B. L., T. A. Libermann, K. Kogawa, S. Ghosh, L. X. Cao, D. Pavan-Langston, and E. C. Dunkel. 1992. HSV-1-inducible proteins bind to NF-kappa B-like sites in the HSV-1 genome. Virology 189:750-6.
    231. Ross, C, J. A. Hiscox, and J. McCauley. 2001. Unpublished data.
    232. Rota, P. A., M. S. Oberste, S. S. Monroe, W. A. Nix, R. Campagnoli, J. P. Icenogle, S. Penaranda, B. Bankamp, K. Maher, M. H. Chen, S. Tong, A. Tamin, L. Lowe, M. Frace, J. L. DeRisi, Q. Chen, D. Wang, D. D. Erdman, T. C. Peret, C. Burns, T. G. Ksiazek, P. E. Rollin, A. Sanchez, S. Liffick, B. Holloway, J. Limor, K. McCaustland, M. Olsen-Rasmussen, R. Fouchier, S. Gunther, A. D. Osterhaus, C. Drosten, M. A. Pallansch, L. J. Anderson, and W. J. Bellini. 2003. Characterization of a novel coronavirus associated with severe acute respiratory syndrome. Science 300:1394-9.
    233. Rothwarf, D. M., E. Zandi, G. Natoli, and M. Karin. 1998. IKK-gamma is an essential regulatory subunit of the IkappaB kinase complex. Nature 395:297-300.
    234. Roulston, A., R. C. Marcellus, and P. E. Branton. 1999. Viruses and apoptosis.
     Annu Rev Microbiol 53:577-628.
    235. Rowland, R. R., R. Kervin, C. Kuckleburg, A. Spcrlich, and D. A. Benfield. 1999. The localization of porcine reproductive and respiratory syndrome virus nucleocapsid protein to the nucleolus of infected cells and identification of a potential nucleolar localization signal sequence. Virus Res 64:1-12.
    236. Rowland, R. R., P. Schneider, Y. Fang, S. Wootton, D. Yoo, and D. A. Benfield. 2003. Peptide domains involved in the localization of the porcine reproductive and respiratory syndrome virus nucleocapsid protein to the nucleolus. Virology 316:135-45.
    237. Rowland, R. R., and D. Yoo. 2003. Nucleolar-cytoplasmic shuttling of PRRSV nucleocapsid protein: a simple case of molecular mimicry or the complex regulation by nuclear import, nucleolar localization and nuclear export signal sequences. Virus Res 95:23-33.
    238. Rozera, C., A. Carattoli, A. De Marco, C. Amici, C. Giorgi, and M. G. Santoro. 1996. Inhibition of HIV-1 replication by cyclopentenone prostaglandins in acutely infected human cells. Evidence for a transcriptional block. J Clin Invest 97:1795-803.
    239. Ruan, Y. J., C. L. Wei, A. L. Ee, V. B. Vega, H. Thoreau, S. T. Su, J. M. Chia, P. Ng, K. P. Chiu, L. Lim, T. Zhang, C. K. Peng, E. O. Lin, N. M. Lee, S. L. Yee, L. F. Ng, R. E. Chee, L. W. Stanton, P. M. Long, and E. T. Liu. 2003. Comparative full-length genome sequence analysis of 14 SARS coronavirus isolates and common mutations associated with putative origins of infection. Lancet 361:1779-85.
    240. Sambrook, J., and D. W. RusseU. 2001. Molecular cloning, a laboratoey manual, vol. 1. Cold Spring Harbor Laboratory Press.
    241. Santoro, M. G., A. Rossi, and C. Amici. 2003. NF-kappaB and virus infection: who controls whom. Embo J 22:2552-60.
    242. Schwarz, E. M., C. Badorff, T. S. Hiura, R. Wessely, A. Badorff, I. M. Verma, and K. U. Knowlton. 1998. NF-kappaB-mediated inhibition of apoptosis is required for encephalomyocarditis virus virulence: a mechanism of resistance in p50 knockout mice. J Virol 72:5654-60.
    243. Senftleben, U., Y. Cao, G. Xiao, F. R. Greten, G. Krahn, G. Bonizzi, Y. Chen, Y. Hu, A. Fong, S. C. Sun, and M. Karin. 2001. Activation by IKKalpha of a
     second, evolutionary conserved, NF-kappa B signaling pathway. Science 293:1495-9.
    244. Seo, S. H., L. Wang, R. Smith, and E. W. Collisson. 1997. The carboxyl-terminal 120-residue polypeptide of infectious bronchitis virus nucleocapsid induces cytotoxic T lymphocytes and protects chickens from acute infection. J Virol 71:7889-94.
    245. Sheehy, A. M., and M. S. Schlissel. 1999. Overexpression of RelA causes G1 arrest and apoptosis in a pro-B cell line. J Biol Chem 274:8708-16.
    246. Sherman, M. P., C. M. de Noronha, M. I. Heusch, S. Greene, and W. C. Greene. 2001. Nucleocytoplasmic shuttling by human immunodeficiency virus type 1 Vpr. J Virol 75:1522-32.
    247. Shi, Y., Y. Yi, P. Li, T. Kuang, L. Li, M. Dong, Q. Ma, and C. Cao. 2003. Diagnosis of severe acute respiratory syndrome (SARS) by detection of SARS coronavirus nucleocapsid antibodies in an antigen-capturing enzyme-linked immunosorbent assay. J Clin Microbiol 41:5781-2.
    248. Siddell, S. G. 1995. The coronaviridae. In U. W. H Feldmann (ed.), In The Viruses. Plenum Press, New York.
    249. Silver, P. A. 1991. How proteins enter the nucleus. Cell 64:489-97.
    250. Silvennan, N., and T. Maniatis. 2001. NF-kappaB signaling pathways in mammalian and insect innate immunity. Genes Dev 15:2321-42.
    251. Simeonova, P. P., and M. I. Luster. 1996. Asbestos induction of nuclear transcription factors and interleukin 8 gene regulation. Am J Respir Cell Mol Biol 15:787-95.
    252. Siomi, H., H. Shida, M. Maki, and M. Hatanaka. 1990. Effects of a highly basic region of human immunodeficiency virus Tat protein on nucleolar localization. J Virol 64:1803-7.
    253. Siomi, H., H. Shida, S. H. Nam, T. Nosaka, M. Maki, and M. Hatanaka. 1988. Sequence requirements for nucleolar localization of human T cell leukemia virus type I pX protein, which regulates viral RNA processing. Cell 55:197-209.
    254. Sirri, V., P. Roussel, M. C. Gendron, and D. Hernandez-Verdun. 1997. Amount of the two major Ag-NOR proteins, nucleolin, and protein B23 is cell-cycle dependent. Cytometry 28:147-56.
    255. Snijder, E. J., P. J. Bredenbeek, J. C. Dobbe, V. Thiel, J. Ziebuhr, L. L. Poon,
     Y. Guan, M. Rozanov, W. J. Spaan, and A. E. Gorbalenya. 2003. Unique and conserved features of genome and proteome of SARS-coronavirus, an early split-off from the coronavirus group 2 lineage. J Mol Biol 331:991-1004.
    256. Soliman, T. M., and S. J. Silverstein. 2000. Herpesvirus mRNAs are sorted for export via Crml-dependent and -independent pathways. J Virol 74:2814-25.
    257. Song, J., M. Nagano-Fujii, F. Wang, R. Florese, T. Fujita, S. Ishido, and H. Hotta. 2000. Nuclear localization and intramolecular cleavage of N-terminally deleted NS5A protein of hepatitis C virus. Virus Res 69:109-17.
    258. Spiga, O., A. Bernini, A. Ciutti, S. Chiellini, N. Menciassi, F. Finetti, V. Causarono, F. Anselmi, F. Prischi, and N. Niccolai. 2003. Molecular modelling of S1 and S2 subunits of SARS coronavirus spike glycoprotein. Biochem Biophys Res Commun 310:78-83.
    259. Stohlman, S. A., R. S. Baric, G. N. Nelson, L. H. Soe, L. M. Welter, and R. J. Deans. 1988. Specific interaction between coronavirus leader RNA and nucleocapsid protein. J Virol 62:4288-95.
    260. Sugano, N., W. Chen, M. L. Roberts, and N. R. Cooper. 1997. Epstein-Barr virus binding to CD21 activates the initial viral promoter via NF-kappaB induction. J Exp Med 186:731-7.
    261. Sukegawa, J., and G. Blobel. 1993. A nuclear pore complex protein that contains zinc finger motifs, binds DNA, and faces the nucleoplasm. Cell 72:29-38.
    262. Sulea, T., H. A. Lindner, E. O. Purisima, and R. Menard. 2005. Deubiquitination, a new function of the severe acute respiratory syndrome coronavirus papain-like protease? J Virol 79:4550-1.
    263. Suopanki, J., D. L. Sawicki, S. G. Sawicki, and L. Kaariainen. 1998. Regulation of alphavirus 26S mRNA transcription by replicase component nsP2. J Gen Virol 79 (Pt 2):309-19.
    264. Surjit, M., B. Liu, S. Jameel, V. T. Chow, and S. K. Lal. 2004. The SARS coronavirus nucleocapsid protein induces actin reorganization and apoptosis in COS-1 cells in the absence of growth factors. Biochem J 383:13-8.
    265. Surjit, M., B. Liu, P. Kumar, V. T. Chow, and S. K. Lal. 2004. The nucleocapsid protein of the SARS coronavirus is capable of self-association through a C-terminal 209 amino acid interaction domain. Biochem Biophys Res Commun 317:1030-6.
    266. Tahara, S. M., T. A. Dietlin, C. C. Bergmann, G. W. Nelson, S. Kyuwa, R. P. Anthony, and S. A. Stohlman. 1994. Coronavirus translational regulation: leader affects mRNA efficiency. Virology 202:621-30.
    267. Tai, D. I., S. L. Tsai, Y. M. Chen, Y. L. Chuang, C. Y. Peng, I. S. Sheen, C. T. Yeh, K. S. Chang, S. N. Huang, G. C. Kuo, and Y. F. Liaw. 2000. Activation of nuclear factor kappaB in hepatitis C virus infection: implications for pathogenesis and hepatocarcinogenesis. Hepatology 31:656-64.
    268. Tak, P. P., and G. S. Firestein. 2001. NF-kappaB: a key role in inflammatory diseases. J Clin Invest 107:7-11.
    269. Tan, X. Y., Z. Fan, H. J. Wang, L. Shi, B. Yin, A. P. Ni, C. Qin, K. Zou, Y. Shen, J. G. Yuan, B. Q. Qiang, and X. Z. Peng. 2003. [Cloning, expression and purification of SARS coronavirus PUMC2 strain nucleocapsid protein]. Zhongguo Yi Xue Ke Xue Yuan Xue Bao 25:504-7.
    270. Tan, Y. J., P. Y. Goh, B. C. Fielding, S. Shen, C. F. Chou, J. L. Fu, H. N. Leong, Y. S. Leo, E. E. Ooi, A. E. Ling, S. G. Lim, and W. Hong. 2004. Profiles of antibody responses against severe acute respiratory syndrome coronavirus recombinant proteins and their potential use as diagnostic markers. Clin Diagn Lab Immunol 11:362-71.
    271. Tanner, J. E., C. Alfieri, T. A. Chatila, and F. Diaz-Mitoma. 1996. Induction of interleukin-6 after stimulation of human B-cell CD21 by Epstein-Barr virus glycoproteins gp350 and gp220. J Virol 70:570-5.
    272. Tato, C. M., and C. A. Hunter. 2002. Host-pathogen interactions: subversion and utilization of the NF-kappa B pathway during infection. Infect Immun 70:3311-7.
    273. Thiel, V., K. A. Ivanov, A. Putics, T. Hertzig, B. Schelle, S. Bayer, B. Weissbrich, E. J. Snijder, H. Rabenau, H. W. Doerr, A. E. Gorbalenya, and J. Ziebuhr. 2003. Mechanisms and enzymes involved in SARS coronavirus genome expression. J Gen Virol 84:2305-15.
    274. Tijms, M. A., Y. van der Meer, and E. J. Snijder. 2002. Nuclear localization of non-structural protein 1 and nucleocapsid protein of equine arteritis virus. J Gen Virol 83:795-800.
    275. Timani, K. A., L. Ye, Y. Zhu, Z. Wu, and Z. Gong. 2004. Cloning, sequencing, expression, and purification of SARS-associated coronavirus nucleocapsid
     protein for serodiagnosis of SARS. J Clin Virol 30:309-12.
    276. Tong, S., J. R. Lingappa, Q. Chen, B. Shu, A. C. LaMonte, B. T. Cook, C. Birge, S. W. Chern, X. Liu, R. Galloway, Q. Mai le, W. F. Ng, J. Y. Yang, J. Butany, J. A. Comer, S. S. Monroe, S. R. Beard, T. G. Ksiazek, D. Erdman, P. A. Rota, M. A. Pallansch, and L. J. Anderson. 2004. Direct sequencing of SARS-coronavirus S and N genes from clinical specimens shows limited variation. J Infect Dis 190:1127-31.
    277. Vennema, H., G. J. Godeke, J. W. Rossen, W. F. Voorhout, M. C. Horzinek, D. J. Opstelten, and P. J. Rottier. 1996. Nucleocapsid-independent assembly of coronavirus-like particles by co-expression of viral envelope protein genes. Embo J 15:2020-8.
    278. Wang, J., J. Wen, J. Li, J. Yin, Q. Zhu, H. Wang, Y. Yang, E. Qin, B. You, W. Li, X. Li, S. Huang, R. Yang, X. Zhang, L. Yang, T. Zhang, Y. Yin, X. Cui, X. Tang, L. Wang, B. He, L. Ma, T. Lei, C. Zeng, J. Fang, J. Yu, H. Yang, M. B. West, A. Bhatnagar, Y. Lu, N. Xu, and S. Liu. 2003. Assessment of Immunoreactive Synthetic Peptides from the Structural Proteins of Severe Acute Respiratory Syndrome Coronavirus. Clin Chem 49:1989-1996.
    279. Wang, S. H., W. J. Syu, K. J. Huang, H. Y. Lei, C. W. Yao, C. C. King, and S. T. Hu. 2002. Intracellular localization and determination of a nuclear localization signal of the core protein of dengue virus. J Gen Virol 83:3093-102.
    280. Wang, T., Y. Wang, M. C. Wu, X. Y. Guan, and Z. F. Yin. 2004. Activating mechanism of transcriptor NF-kappaB regulated by hepatitis B virus X protein in hepatocellular carcinoma. World J Gastroenterol 10:356-60.
    281. Wang, Y., and X. Zhang. 1999. The nucleocapsid protein of coronavirus mouse hepatitis virus interacts with the cellular heterogeneous nuclear ribonucleoprotein A1 in vitro and in vivo. Virology 265:96-109.
    282. Watanabe, N., M. Kawano, M. Tsurudome, S. Kusagawa, M. Nishio, H. Komada, T. Shima, and Y. Ito. 1996. Identification of the sequences responsible for nuclear targeting of the V protein of human parainfluenza virus type 2. J Gen Virol 77(Pt 2 ):327-38.
    283. Watashi, K., M. Hijikata, H. Marusawa, T. Doi, and K. Shimotohno. 2001. Cytoplasmic localization is important for transcription factor nuclear factor-kappa B activation by hepatitis C virus core protein through its amino terminal region.
     Virology 286:391-402.
    284. Wege, H., A. Schliephake, H. Korner, and E. Flory. 1993. An immunodominant CD4+ T cell site on the nucleocapsid protein of murine coronavirus contributes to protection against encephalomyelitis. J Gen Virol 74 (Pt 7): 1287-94.
    285. Weil, R., H. Sirma, C. Giannini, D. Kremsdorf, C. Bessia, C. Dargemont, C. Brechot, and A. Israel. 1999. Direct association and nuclear import of the hepatitis B virus X protein with the NF-kappaB inhibitor IkappaBalpha. Mol Cell Biol 19:6345-54.
    286. Weiss, B., H. Nitschko, I. Ghattas, R. Wright, and S. Schlesinger. 1989. Evidence for specificity in the encapsidation of Sindbis virus RNAs. J Virol 63:5310-8.
    287. Welch, H., A. Eguinoa, L. R. Stephens, and P. T. Hawkins. 1998. Protein kinase B and rac are activated in parallel within a phosphatidylinositide 3OH-kinase-controlled signaling pathway. J Biol Chem 273:11248-56.
    288. Wen, W., J. L. Meinkoth, R. Y. Tsien, and S. S. Taylor. 1995. Identification of a signal for rapid export of proteins from the nucleus. Cell 82:463-73.
    289. Wilbur, S. ML, G. W. Nelson, M. M. Lai, M. McMillan, and S. A. Stohlman. 1986. Phosphorylation of the mouse hepatitis virus nucleocapsid protein. Biochem Biophys Res Commun 141:7-12.
    290. Williams, B. R. 2001. Signal integration via PKR. Sci STKE 2001:RE2.
    291. Wilson, G. A., D. V. Mohandas, and S. Dales. 1990. In vivo and in vitro models of demyelinating disease. Possible relationship between induction of regulatory subunit from cAMP dependent protein kinases and inhibition of JHMV replication in cultured oligodendrocytes. Adv Exp Med Biol 276:261-6.
    292. Wolff, B., J. J. Sanglier, and Y. Wang. 1997. Leptomycin B is an inhibitor of nuclear export: inhibition of nucleo-cytoplasmic translocation of the human immunodeficiency virus type 1 (HIV-1) Rev protein and Rev-dependent mRNA. Chem Biol 4:139-47.
    293. Woo, P. C, K. T. Chong, A. S. Leung, S. S. Wong, S. K. Lau, and K. Y. Yuen. 2003. AFLMP1 encodes an antigenic cel wall protein in Aspergillus flavus. J Clin Microbiol 41:845-50.
    294. Woo, P. C, S. K. Lau, H. W. Tsoi, K. H. Chan, B. H. Wong, X. Y. Che, V. K.
     Tam, S. C. Tam, V. C. Cheng, I. F. Hung, S. S. Wong, B. J. Zheng, Y. Guan, and K. Y. Yuen. 2004. Relative rates of non-pneumonic SARS coronavirus infection and SARS coronavirus pneumonia. Lancet 363:841-5.
    295. Woo, P. C., S. K. Lau, B. H. Wong, K. H. Chan, C. M. Chu, H. W. Tsoi, Y. Huang, J. S. Peiris, and K. Y. Yuen. 2004. Longitudinal profile of immunoglobulin G (IgG), IgM, and IgA antibodies against the severe acute respiratory syndrome (SARS) coronavirus nucleocapsid protein in patients with pneumonia due to the SARS coronavirus. Clin Diagn Lab Immunol 11:665-8.
    296. Woo, P. C., S. K. Lau, B. H. Wong, K. H. Chan, W. T. Hui, G. S. Kwan, J. S. Peiris, R. B. Couch, and K. Y. Yuen. 2004. False-positive results in a recombinant severe acute respiratory syndrome-associated coronavirus (SARS-CoV) nucleocapsid enzyme-linked immunosorbent assay due to HCoV-OC43 and HCoV-229E rectified by Western blotting with recombinant SARS-CoV spike polypeptide. J Clin Microbiol 42:5885-8.
    297. Woo, P. C., S. K. Lau, B. H. Wong, H. W. Tsoi, A. M. Fung, K. H. Chan, V. K. Tam, J. S. Peiris, and K. Y. Yuen. 2004. Detection of specific antibodies to severe acute respiratory syndrome (SARS) coronavirus nucleocapsid protein for serodiagnosis of SARS coronavirus pneumonia. J Clin Microbiol 42:2306-9.
    298. Wright, J. G., and J. W. Christman. 2003. The role of nuclear factor kappa B in the pathogenesis of pulmonary diseases: implications for therapy. Am J Respir Med 2:211-9.
    299. Wu, G. D., E. J. Lai, N. Huang, and X. Wen. 1997. Oct-1 and CCAAT/enhancer-binding protein (C/EBP) bind to overlapping elements within the interleukin-8 promoter. The role of Oct-1 as a transcriptional repressor. J Biol Chem 272:2396-403.
    300. Wu, Q., Y. Zhang, H. Lu, J. Wang, X. He, Y. Liu, C. Ye, W. Lin, J. Hu, J. Ji, J. Xu, J. Ye, Y. Hu, W. Chen, S. Li, S. Bi, and H. Yang. 2003. The E protein is a multifunctional membrane protein of SARS-CoV. Genomics Proteomics Bioinformatics 1:131 -44.
    301. Wu, X. D., B. Shang, R. F. Yang, H. Yu, Z. H. Ma, X. Shen, Y. Y. Ji, Y. Lin, Y. D. Wu, G. M. Lin, L. Tian, X. Q. Gan, S. Yang, W. H. Jiang, E. H. Dai, X. Y. Wang, H. L. Jiang, Y. H. Xie, X. L. Zhu, G. Pei, L. Li, J. R. Wu, and B. Sun. 2004. The spike protein of severe acute respiratory syndrome (SARS) is
     cleaved in virus infected Vero-E6 cells. Cell Res 14:400-6.
    302. Wurm, T., H. Chen, T. Hodgson, P. Britton, G. Brooks, and J. A. Hiscox. 2001. Localization to the nucleolus is a common feature of coronavirus nucleoproteins, and the protein may disrupt host cell division. J Virol 75:9345-56.
    303. Xiao, G., M. E. Cvijic, A. Fong, E. W. Harhaj, M. T. Uhlik, M. Waterfield, and S. C. Sun. 2001. Retroviral oncoprotein Tax induces processing of NF-kappaB2/p100 in T cells: evidence for the involvement of IKKalpha. Embo J 20:6805-15.
    304. Yamanaka, T., T. Kodama, and T. Doi. 2002. Subcellular localization of HCV core protein regulates its ability for p53 activation and p21 suppression. Biochem Biophys Res Commun 294:528-34.
    305. Yan, H., G. Xiao, J. Zhang, Y. Hu, F. Yuan, D. K. Cole, C. Zheng, and G. F. Gao. 2004. SARS coronavirus induces apoptosis in Vero E6 cells. J Med Virol 73:323-31.
    306. Yasumoto, K., S. Okamoto, N. Mukaida, S. Murakami, M. Mai, and K. Matsushima. 1992. Tumor necrosis factor alpha and interferon gamma synergistically induce interleukin 8 production in a human gastric cancer cell line through acting concurrently on AP-1 and NF-kB-like binding sites of the interleukin 8 gene. J Biol Chem 267:22506-11.
    307. Yin, M. J., Y. Yamamoto, and R. B. Gaynor. 1998. The anti-inflammatory agents aspirin and salicylate inhibit the activity of I(kappa)B kinase-beta. Nature 396:77-80.
    308. Ying, W., Y. Hao, Y. Zhang, W. Peng, E. Qin, Y. Cai, K. Wei, J. Wang, G. Chang, W. Sun, S. Dai, X. Li, Y. Zhu, J. Li, S. Wu, L. Guo, J. Dai, P. Wan, T. Chen, C. Du, D. Li, J. Wan, X. Kuai, W. Li, R. Shi, H. Wei, C. Cao, M. Yu, H. Liu, F. Dong, D. Wang, X. Zhang, X. Qian, Q. Zhu, and F. He. 2004. Proteomic analysis on structural proteins of Severe Acute Respiratory Syndrome coronavirus. Proteomics 4:492-504.
    309. Yoshida, E., Y. S. Shin, K. Iwatsuki, T. Gemma, N. Miyashita, K. Tomonaga, N. Hirayama, T. Mikami, and C. Kai. 1999. Epitopes and nuclear localization analyses of canine distemper virus nucleocapsid protein by expression of its deletion mutants. Vet Microbiol 66:313-20.
    310. You, L. R., C. M. Chen, and Y. H. Lee. 1999. Hepatitis C virus core protein
     enhances NF-kappaB signal pathway triggering by lymphotoxin-beta receptor ligand and tumor necrosis factor alpha. J Virol 73:1672-81.
    311. Yu, C. J., Y. C. Chen, C. H. Hsiao, T. C. Kuo, S. C. Chang, C. Y. Lu, W. C. Wei, C. H. Lee, L. M. Huang, M. F. Chang, H. N. Ho, and F. J. Lee. 2004. Identification of a novel protein 3a from severe acute respiratory syndrome coronavirus. FEBS Lett 565:111-6.
    312. Yuan, J., U. M. Wegenka, C. Lutticken, J. Buschmann, T. Decker, C. Schindler, P. C. Heinrich, and F. Horn. 1994. The signalling pathways of interleukin-6 and gamma interferon converge by the activation of different transcription factors which bind to common responsive DNA elements. Mol Cell Biol 14:1657-68.
    313. Yuan, X., J. Li, Y. Shan, Z. Yang, Z. Zhao, B. Chen, Z. Yao, B. Dong, S. Wang, J. Chen, and Y. Cong. 2005. Subcellular localization and membrane association of SARS-CoV 3a protein. Virus Res 109:191-202.
    314. Yuen, K. Y., C. M. Chan, K. M. Chan, P. C. Woo, X. Y. Che, A. S. Leung, and L. Cao. 2001. Characterization of AFMP1: a novel target for serodiagnosis of aspergillosis. J Clin Microbiol 39:3830-7.
    315. Yurochko, A. D., M. W. Mayo, E. E. Poma, A. S. Baldwin, Jr., and E. S. Huang. 1997. Induction of the transcription factor Spl during human cytomegalovirus infection mediates upregulation of the p65 and p105/p50 NF-kappaB promoters. J Virol 71:4638-48.
    316. Zakhartchouk, A. N., S. Viswanathan, J. B. Mahony, J. Gauldie, and L. A. Babiuk. 2005. Severe acute respiratory syndrome coronavirus nucleocapsid protein expressed by an adenovirus vector is phosphorylated and immunogenic in mice. J Gen Virol 86:211-5.
    317. Zeng, F. Y., C. W. Chan, M. N. Chan, J. D. Chen, K. Y. Chow, C. C. Hon, K. H. Hui, J. Li, V. Y. Li, C. Y. Wang, P. Y. Wang, Y. Guan, B. Zheng, L. L. Poon, K. H. Chan, K. Y. Yuen, J. S. Peiris, and F. C. Leung. 2003. The complete genome sequence of severe acute respiratory syndrome coronavirus strain HKU-39849 (HK-39). Exp Biol Med (Maywood) 228:866-73.
    318. Zeng, R., H. Q. Ruan, X. S. Jiang, H. Zhou, L. Shi, L. Zhang, Q. H. Sheng, Q. Tu, Q. C. Xia, and J. R. Wu. 2004. Proteomic analysis of SARS associated coronavirus using two-dimensional liquid chromatography mass spectrometry and
     one-dimensional sodium dodecyl sulfate-polyacrylamide gel electrophoresis followed by mass spectroemtric analysis. J Proteome Res 3:549-55.
    319. Zeng, R., R. F. Yang, M. D. Shi, M. R. Jiang, Y. H. Xie, H. Q. Ruan, X. S. Jiang, L. Shi, H. Zhou, L. Zhang, X. D. Wu, Y. Lin, Y. Y. Ji, L. Xiong, Y. Jin, E. H. Dai, X. Y. Wang, B. Y. Si, J. Wang, H. X. Wang, C. E. Wang, Y. H. Gan, Y. C. Li, J. T. Cao, J. P. Zuo, S. F. Shan, E. Xie, S. H. Chen, Z. Q. Jiang, X. Zhang, Y. Wang, G. Pei, B. Sun, and J. R. Wu. 2004. Characterization of the 3 a protein of SARS-associated coronavirus in infected vero E6 cells and SARS patients. J Mol Biol 341:271-9.
    320. Zhao, P., J. Cao, L. J. Zhao, Z. L. Qin, J. S. Ke, W. Pan, H. Ren, J. G. Yu, and Z. T. Qi. 2005. Immune responses against SARS-coronavirus nucleocapsid protein induced by DNA vaccine. Virology 331:128-35.
    321. Zhong, H., R. E. Voll, and S. Ghosh. 1998. Phosphorylation of NF-kappa B p65 by PKA stimulates transcriptional activity by promoting a novel bivalent interaction with the coactivator CBP/p300. Mol Cell 1:661-71.
    322. Zhou, M., A. K. Williams, S. I. Chung, L. Wang, and E. W. Collisson. 1996. The infectious bronchitis virus nucleocapsid protein binds RNA sequences in the 3' terminus of the genome. Virology 217:191-9.
    323. Ziebuhr, J. 2004. Molecular biology of severe acute respiratory syndrome coronavirus. Curr Opin Microbiol 7:412-9.

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