Identification of several clades of novel single-stranded circular DNA viruses with conserved stem-loop structures in pig feces

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• 作者：Andrew K. Cheung (1)
  Terry Fei Fan Ng (2)
  Kelly M. Lager (1)
  David P. Alt (3)
  Eric Delwart (2)
  Roman M. Pogranichniy (4)
  
  1. Virus and Prion Diseases Research Unit ; National Animal Disease Center ; USDA ; Agricultural Research Service ; PO Box 70 ; Ames ; IA ; 50010 ; USA
  2. Blood Systems Research Institute and Department of Laboratory Medicine ; University of California at San Francisco ; San Francisco ; CA ; USA
  3. Infectious Bacterial Diseases Research Unit ; National Animal Disease Center ; USDA ; Agricultural Research Service ; Ames ; IA ; USA
  4. Indiana Animal Disease Diagnostic Laboratory and Department of Comparative Pathobiology ; Purdue University ; West Lafayette ; IN ; USA
  
• 刊名：Archives of Virology
• 出版年：2015
• 出版时间：January 2015
• 年：2015
• 卷：160
• 期：1
• 页码：353-358
• 全文大小：1,509 KB
• 参考文献：1. Cheung AK, Ng TF, Lager KM, Bayles DO, Alt DP, Delwart EL, Pogranichniy RM, Kehrli ME Jr (2013) A divergent clade of circular single-stranded DNA viruses from pig feces. Arch Virol 158:2157鈥?162 CrossRef
  2. Cheung AK, Ng TF, Lager KM, Alt DP, Delwart EL, Pogranichniy RM (2014) Identification of a novel single-stranded circular DNA virus in pig feces. Genome Announc 2(2):e00347-14. doi:10.1128/genomeA.00347-14 28/genomeA.00347-14" target="_blank" title="It opens in new window">CrossRef
  3. Cheung AK, Ng TF, Lager KM, Alt DP, Delwart EL, Pogranichniy RM (2014) Unique circovirus-like genome detected in pig feces. Genome Announc 2(2):e00251-14. doi:10.1128/genomeA.00251-14 28/genomeA.00251-14" target="_blank" title="It opens in new window">CrossRef
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• 刊物类别：Biomedical and Life Sciences
• 刊物主题：Biomedicine
  Virology
  Medical Microbiology
  Infectious Diseases
  
• 出版者：Springer Wien
• ISSN：1432-8798

文摘

Metagenomic analysis of fecal samples collected from diarrheal swine detected sequences encoding a replication initiator protein (Rep). The genomes of ten novel single-stranded DNA viruses were determined, and they exhibited a similar genome organization. The two putative open reading frames (ORFs) encoding Rep and the capsid protein are bidirectionally transcribed and separated by two intergenic regions. Stem-loop structure(s) typical of genomes that undergo the rolling-circle DNA replication mechanism were observed. Phylogenetically, these ten genomes are in a monophyletic clade with the previously described porcine stool-associated virus (PoSCV) but are divergent enough to be further classified into to six distinct virus clades.