摘要
一种在世界范围内突然爆发的致命流行病——急性呼吸窘迫综合症 (SARS)击倒了数千人 ,一种全新的冠状病毒被认为是其病原 .5个 SARS相关冠状病毒的全基因组序列已经完成 .我们进行了 SARS相关冠状病毒和其它冠状病毒的基因组进化分析和序列比较 ,结果显示 :1 .SARS相关冠状病毒不直接来自于任何已知的冠状病毒 ;2 .E蛋白的基因可能是在近期从其它病毒横向转移到 SARS病毒中来的 ;3 .S1和 S2基因发生了较大范围的缺失或插入突变 .这些基因横向转移和突变改变了 SARS相关病毒的表面结构和抗原性 。
Thousands of people have been sickened by severe acute respiratory syndrome (SARS), which is a fatal disease suddenly appeared around the world. A novel coronavirus was discovered in association with cases of SARS. The sequence of the complete genomes of five SARS-associated coronavirus were determined. We compared the genomes of SARS-associated coronavirus with those of all other coronavirus which genomes have been sequenced, and found that: 1.none of the SARS-associated coronavirus gene was colsely reated to those of other coronavirus; 2. the SARS-associated coronavirus gene obtained the E gene recently by lateral gene transfer; 3. large deletious and insertion have taken place in S1 and S2 genes in the SARS-associated coronavirus gene. SARS-associated coronavirus gene may have obtained the ability to infect human cells due to those gene transfer and major mutations.
出处
《南开大学学报(自然科学版)》
CAS
CSCD
北大核心
2003年第2期1-7,共7页
Acta Scientiarum Naturalium Universitatis Nankaiensis