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[对电离辐射具有增强抗性的大肠杆菌K-12突变体。IV. Gamr突变体的重组特性]

[Escherichia coli K-12 mutants with enhanced resistance to ionizing radiation. IV. Recombination characteristics of Gamr mutants].

作者信息

Bresler S E, Kalinin V L, Laneeva N I

出版信息

Genetika. 1984 May;20(5):756-9.

PMID:6376281
Abstract

In the radiation-resistant Gamr444 mutant the inheritance frequency of long F' episomes ORF1 (purE+ tsx+ procC+ lac+) and F'14 (ilv+--argE+) is lower, and the frequencies of chromosome mobilization and integrative suppression of temperature-sensitive dnaA46 mutation by the sex factor F are much higher than those in the wild-type strain AB1157 and another radiation-resistant mutant Gamr445. In this respect, the mutant Gamr444 is very similar to the recRC sbcB mutant (RecF-pathway of recombination).

摘要

在抗辐射的Gamr444突变体中,长F'附加体ORF1(purE + tsx + procC + lac +)和F'14(ilv +--argE +)的遗传频率较低,并且性因子F对温度敏感的dnaA46突变的染色体动员频率和整合抑制频率远高于野生型菌株AB1157和另一个抗辐射突变体Gamr445。在这方面,突变体Gamr444与recRC sbcB突变体(重组的RecF途径)非常相似。

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