大肠杆菌K-12中硝酸盐还原酶表达对Fnr和NarL功能的需求。
Requirement of Fnr and NarL functions for nitrate reductase expression in Escherichia coli K-12.
作者信息
Stewart V
出版信息
J Bacteriol. 1982 Sep;151(3):1320-5. doi: 10.1128/jb.151.3.1320-1325.1982.
Abstract
I used a chlC-lac operon fusion to study regulatory mutations which affect nitrate reductase expression in Escherichia coli. A NarL- mutant apparently lacks a nitrate-specific positive regulatory component. Furthermore, an fnr (nirR) mutation prevented enzyme induction under any conditions. These data are consistent with a two-step, positive control model for nitrate reductase regulation.
摘要
我使用了一个chlC-lac操纵子融合体来研究影响大肠杆菌中硝酸盐还原酶表达的调控突变。一个NarL突变体显然缺乏硝酸盐特异性的正调控成分。此外，一个fnr（nirR）突变在任何条件下都阻止了酶的诱导。这些数据与硝酸盐还原酶调控的两步正调控模型一致。
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