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基于全基因组比较的SARS冠状病毒种系进化分析 被引量:2

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摘要 SARS(severe acute respiratory syndrome)冠状病毒已被世界卫生组织确认为SARS传染病的病原体,它的全基因组测序工作分别由中国、加拿大、美国等国的研究小组完成。然而它的起源仍是一个谜为了探寻SARS冠状病毒的来源,基于FDOD(function of degree of disagreement)方法,对12个SARS冠状病毒分离株和12种以往发现的冠状病毒进行了全基因组比较,构造出种系进化无根树。结果表明,这两类病毒(分别由12个SARS冠状病毒分离株和12种以往发现的冠状病毒构成)虽然都来自冠状病毒属,但它们位于两个不同的进化分支上。冠状病毒属中的3个组被准确地重构。根据得到的结果,推测SARS冠状病毒更类似于第一组中的冠状病毒。根据种系进化树的拓扑结构和各SARS冠状病毒分离株与造成香港Metropole饭店疫情的SARS冠状病毒株之间的联系,推测各SARS冠状病毒分离株分别位于进化树上两个大的分支,这为SARS的流行病学研究提供了辅助信息。
出处 《科学通报》 EI CAS CSCD 北大核心 2003年第12期1242-1245,共4页 Chinese Science Bulletin
基金 国家高技术研究发展计划(批准号:2002AA231031) 中国科学院知识创新工程(批准号:KSCX2-2-07和KJCX1-08)资助项目.
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共引文献16

同被引文献21

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