变形链球菌6715g中不同蔗糖和葡萄糖磷酸转移酶II活性的鉴定及特性
Identification and properties of distinct sucrose and glucose phosphotransferase enzyme II activities in Streptococcus mutans 6715g.
作者信息
Jacobson G R, Mimura C S, Scott P J, Thompson P W
出版信息
Infect Immun. 1984 Dec;46(3):854-6. doi: 10.1128/iai.46.3.854-856.1984.
Abstract
We investigated phosphoenolpyruvate-dependent phosphotransferase system enzyme II activities for sucrose and glucose in Streptococcus mutans 6715g. Two integral membrane proteins, enzyme IIscr and enzyme IIglc, each specific for its sugar substrate, sucrose or glucose, were identified by their abilities to catalyze specific sugar:sugar-phosphate exchange reactions. Some of the properties of these two transport proteins are also presented.
摘要
我们研究了变形链球菌6715g中磷酸烯醇丙酮酸依赖性磷酸转移酶系统对蔗糖和葡萄糖的酶II活性。通过它们催化特定糖：糖磷酸交换反应的能力，鉴定出了两种完整膜蛋白，即分别对其糖底物蔗糖或葡萄糖具有特异性的酶IIscr和酶IIglc。还介绍了这两种转运蛋白的一些特性。
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