An evaluation of the evolution of the gene structure of dystroglycan
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- 作者：Andrea Brancaccio ; Josephine C. Adams
- 关键词：Dystroglycan ; Gene structure ; Exon–intron junctions ; IG domain ; Intron expansion ; Metazoan
- 刊名：BMC Research Notes
- 出版年：2017
- 出版时间：December 2017
- 年：2017
- 卷：10
- 期：1
- 全文大小：4881KB
- 刊物主题：Biomedicine, general; Medicine/Public Health, general; Life Sciences, general;
- 出版者：BioMed Central
- ISSN：1756-0500
- 卷排序：10
文摘
BackgroundDystroglycan (DG) is an adhesion receptor complex composed of two non-covalently associated subunits, transcribed from a single gene. The extracellular α-DG is highly and heterogeneously glycosylated and binds with high affinity to laminins, and the transmembrane β-DG binds intracellular dystrophin. Multiple cellular functions have been proposed for DG, notwithstanding that its role in skeletal muscle appears central as demonstrated by both primary and secondary severe muscular dystrophic phenotypes collectively known as dystroglycanopathies. We recently analysed the molecular phylogeny of the DG core protein and identified the α/β interface, transmembrane and cytoplasmic domains of β-DG as the most conserved region. It was also identified that the IG2_MAT_NU region has been independently duplicated in multiple lineages.