大肠杆菌K-12外膜对大肠菌素Ia的切割并非由大肠菌素Ia受体介导。
Cleavage of colicin Ia by the Escherichia coli K-12 outer membrane is not mediated by the colicin Ia receptor.
作者信息
Bowles L K, Konisky J
出版信息
J Bacteriol. 1981 Jan;145(1):668-71. doi: 10.1128/jb.145.1.668-671.1981.
Abstract
Colicin Ia can be cleaved by isolated outer membranes prepared from sensitive and resistant (lacking the colicin Ia receptor) strains of Escherichia coli. Both active and heat-denatured colicin Ia are extensively fragmented. Such proteolysis does not occur when colicin Ia is added to whole sensitive or resistant cells. These results demonstrate that cleavage of colicin Ia is not mediated by its outer membrane receptor.
摘要
大肠杆菌素Ia可被从敏感和抗性（缺乏大肠杆菌素Ia受体）的大肠杆菌菌株制备的分离外膜所切割。活性和热变性的大肠杆菌素Ia都会被广泛裂解。当将大肠杆菌素Ia添加到完整的敏感或抗性细胞中时，不会发生这种蛋白水解作用。这些结果表明，大肠杆菌素Ia的切割不是由其外膜受体介导的。
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