Sequencing and comparative analysis of a pig bovine viral diarrhea virus genome
文献类型: 外文期刊
第一作者: Xu, Xingran
作者: Xu, Xingran;Zhang, Qingchan;Yu, Xinglong;Liang, Long;Xiao, Chang;Xiang, Hua;Tu, Changchun
作者机构:
关键词: pig BVDV;complete genome;sequencing;phylogeny
期刊名称:VIRUS RESEARCH ( 影响因子:3.303; 五年影响因子:3.445 )
ISSN: 0168-1702
年卷期: 2006 年 122 卷 1-2 期
页码:
收录情况: SCI
摘要: In present study, we report the first complete genomic sequence of pig bovine viral diarrhea (BVD) virus, that of strain ZM-95, which is 12,220 nucleotides long and contains short 5' and 3' non-coding regions and one open reading frame encoding a large polyprotein with 28 potential N-glycosylation sites (Asn-X-Ser or Asn-X-Thr). Within the non-structural protein encoding region, no foreign nucleotide insertions was found as those usually observed for cytopathogenic BVDV-1, but close to the 3'-terminal of the capsid protein (1119-1124 bp) it contains a short insertion of a six nucleotide sequence (CTCACA). Three hypervariable regions were identified in the polyprotein-encoding region, with one of them comprising a sequence motif encoding a unique five amino acid peptide HYKKK in glycoprotein E2 gene. The genomic comparison and phylogenetic analyses showed that ZM-95 should be classified into BVDV-1, but was genetically divergent from other pestiviruses sequenced to date since its highest genetic similarity was only 76.6% (with SD-1), therefore, placed as a novel subgroup of BVDV-1. (c) 2006 Elsevier B.V. All rights reserved.
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