DNA supercoiling and bacterial adaptation: Thermotolerance and thermoresistance

被引：63

作者：

TseDinh, YC

Qi, HY

Menzel, R

机构：

[1] PRINCETON UNIV,DEPT MOL BIOL,PRINCETON,NJ 08544

[2] BRISTOL MYERS SQUIBB CO,DEPT MICROBIAL MOL BIOL,PRINCETON,NJ 08543

来源：

TRENDS IN MICROBIOLOGY | 1997年 / 5卷 / 08期

关键词：

D O I：

10.1016/S0966-842X(97)01080-9

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 ; 081704 ;

摘要：

When bacterial cells are shifted to higher temperatures their degree of DNA supercoiling changes. Topoisomerases are involved in bacterial adaptation to environmental changes requiring rapid shifts in gene expression. This role in heat shock has been elucidated by genetic studies on the Escherichia coli topA gene and its sigma(32)-dependent promoter, P1. Other studies have shown that certain gyrA mutants have increased thermoresistance.

引用

收藏

页码：323 / 326

页数：4

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