22株猪瘟病毒E2基因部分编码序列的序列分析  

SEQUENCE ANALYSIS OF THE PARTICAL CODING SEQUENCE OF E2 GENE OF 22 HOG CHOLERA VIRUS STRAINS

作　　者：赵耘[1] 王在时[1] 王琴[1] 李博[1] 丘惠深[1] 

机构地区：[1]中国兽药监察所,北京100081

出　　处：《微生物学通报》2001年第5期42-48,共7页Microbiology China

基　　金：国家自然科学基金资助项目 (No.3 9893 2 90 1 2 )~~

摘　　要：利用RT PCR方法获得了 1 3株猪瘟病毒分离株、石门系强毒、中国C株及法国温度敏感株Thiverval株的E2基因部分编码序列的扩增片段 ,并对其进行了测序 ,得到了 2 5 1bp的E2基因部分编码序列。利用DNAStar软件对其中 2 2 4bp的片段进行了序列分析 ,并与已发表的Alfort、Brescia等毒株进行比较 ,结果 1 3株猪瘟分离株所测片段均为猪瘟病毒E2基因的序列 ,与石门系强毒的序列相比所有毒株的碱基替换随机地分布于整个序列 ,无碱基缺失和碱基插入。其中变化较大的区域位于序列的 3′端。 2 2株HCVE2基因部分编码序列的核苷酸及氨基酸同源性范围分别为 :78 1 %～ 1 0 0 %、 78 4%～ 1 0 0 % ,其中 1 3株猪瘟病毒流行毒株的核苷酸及氨基酸同源性范围分别为 :78 1 %～ 1 0 0 %、 78 4%～ 1 0 0 % ,4株 70～ 80年代分离的毒株的核苷酸及氨基酸同源性范围分别为 :79 0 %～ 88 3%、 81 1 %～87 8% ,9株 90年代分离的毒株的核苷酸及氨基酸同源性范围分别为 :80 8%～ 1 0 0 %、83 8%～ 1 0 0 % ;s:The partical coding sequence of E2 gene of 13 Hog Cholera Virus(HCV) field isolates, Shimen strain, Chinese vaccine strain(C strain) and Thiverval strain attenuated by low temperature in France,were obtained by reverse trancriptase -polymerse chain reation (RT-PCR) and sequenced.All size were 251bp.The obtained 224bp sequences were analysed by DNA star and compared with the previously published sequences of Alfort strain ,Brescia strain and other references strains.The results showed that those sequencing fragments of 13 HCV field strains were the sequence of E2 gene of HCV.Compared with Shimen strain,the base substitute of all stains were randomly distributed in the entire sequence,and had not base insert and base gap.The variation most occurred at 3' end. The identity of nucleotide sequence and amino acid sequenceof 22 HCV strains were 78.1%～100%?78.4%～100%. The identity of nucleotide sequence and amino acid sequence of 13 HCV field strains were 78.1%～100%?78.4%～100%.The identity of nucleotide sequence and amino acid sequence of 4 HCV field strains isolated in the 1970s～1980s were 79.0%～88.3%?81.1%～87.8%.The identity of nucleotide sequence and amino acid sequence of 9 HCV field strains isolated in the 1990s were 80.8%～100%?83.8%～100% respectively. This paper showed that the genetic variation of HCV was diversity.

关 键 词：猪瘟病毒 序列分析 同源性 变异 E2基因 

分 类 号：S852.651[农业科学—基础兽医学]