新进化酶的调控。I. 大肠杆菌中受乳糖调控的新型乳糖酶的筛选
Regulation of newly evolved enzymes. I. Selection of a novel lactase regulated by lactose in Escherichia coli.
作者信息
Hall B G, Hartl D L
出版信息
Genetics. 1974 Mar;76(3):391-400. doi: 10.1093/genetics/76.3.391.
Abstract
Thirty-four lactose-utilizing strains of E. coli were selected from a lac Z deletion strain. In 31 of these, the synthesis of the newly evolved lactase is regulated by lactose. The lactase activity in all the strains is indistinguishable from the ebg(+) activity identified by Campbell, Lengyel and Langridge (1973).
摘要
从一个乳糖Z缺失菌株中挑选出34株利用乳糖的大肠杆菌菌株。其中31株中，新进化的乳糖酶的合成受乳糖调控。所有菌株中的乳糖酶活性与坎贝尔、伦吉尔和兰格里奇（1973年）鉴定的ebg(+)活性没有区别。
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