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弗氏柠檬酸杆菌的I类β-内酰胺酶在大肠杆菌中的诱导需要活性ftsZ,但不需要ftsA或ftsQ产物。

Induction of a class I beta-lactamase from Citrobacter freundii in Escherichia coli requires active ftsZ but not ftsA or ftsQ products.

作者信息

Ottolenghi A C, Ayala J A

机构信息

Department of Medical Microbiology and Immunology, Ohio State University College of Medicine, Columbus 43210.

出版信息

Antimicrob Agents Chemother. 1991 Nov;35(11):2359-65. doi: 10.1128/AAC.35.11.2359.

Abstract

A possible connection between septation/division and induction of cloned ampC beta-lactamase was investigated. When a ftsZ84(Ts) mutant of Escherichia coli carrying ampR-ampC from Citrobacter freundii was grown at the restrictive temperature (42 degrees C), induction of beta-lactamase by cefoxitin was inhibited by about 80%. Inhibition was virtually complete when a ftsZ84(Ts) mutant of different genetic background was tested. Although somewhat delayed, the induction of beta-lactamase in transformed ftsA(Ts) and ftsQ(Ts) mutants was similar to that observed in wild-type transformants. These results imply that FtsZ is involved in the process of beta-lactamase induction.

摘要

研究了隔膜形成/分裂与克隆的AmpCβ-内酰胺酶诱导之间的可能联系。当携带弗氏柠檬酸杆菌ampR-ampC的大肠杆菌ftsZ84(Ts)突变体在限制温度(42℃)下生长时,头孢西丁诱导的β-内酰胺酶被抑制了约80%。当测试不同遗传背景的ftsZ84(Ts)突变体时,抑制几乎是完全的。虽然有所延迟,但转化的ftsA(Ts)和ftsQ(Ts)突变体中β-内酰胺酶的诱导与野生型转化体中观察到的相似。这些结果表明FtsZ参与了β-内酰胺酶的诱导过程。

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