猪链球菌2型05ZYH33强毒株srtA基因敲除突变株的构建

Chinese Journal of Microbiology and Immunology(2007)

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Abstract
<正>猪链球菌(Streptococcus suis,S.suis) 2型是一种新发人兽共患病的病原,不仅可致猪败血症、肺炎、脑膜炎、关节炎及心内膜炎,而且可感染人类引发严重的链球菌中毒性休克综合征(streptococ- cal toxic shock syndrome,STSS),病程凶险,病死率高,其致病机理尚未阐明。srtA基因所编码的sortase是普遍存在于革兰阳性菌表面的膜蛋白,能辅助一系列含LPXTG基序的蛋白锚定到细菌表面。研究表明,sortase缺失可引起含LPXTG基
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