BACTERIAL TOPOISOMERASES AND THE CONTROL OF DNA SUPERCOILING

被引:52
作者
DRLICA, K
机构
[1] K. Drlica is in the Public Health Research Institute, New York, NY 10016
基金
美国国家科学基金会;
关键词
D O I
10.1016/0168-9525(90)90306-Q
中图分类号
Q3 [遗传学];
学科分类号
071007 ; 090102 ;
摘要
DNA in bacterial cells is under negative superbelical tension, a feature that facilitates many of the activities of DNA. Supercoiling is introduced enzymatically by DNA gyrase, and the accumulation of excessively high levels is prevented by the relaxing activity of DNA topoisomerase I. Among the factors likely to influence supercoiling are topoisomerase gene expression, the ratio of ATP to ADP concentration, and processes such as transcription that unwind DNA and then translocate along it. © 1990.
引用
收藏
页码:433 / 437
页数:5
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