Mutation spectrum in Escherichia coli DNA mismatch repair deficient (mutH) strain.
Mutation spectrum in Escherichia coli DNA mismatch repair deficient (mutH) strain.
复制标题
大肠杆菌 DNA 错配修复缺陷 (mutH) 菌株的突变谱。
DOI:
10.1093/nar/15.20.8205
复制
发表时间:
1987
影响因子:
14.9
通讯作者:
Marinus,MG
中科院分区:
文献类型:
--
作者:
Rewinski,C;Marinus,MG
The Dam-directed post-replicatve mismatch repair system ofEscherichia coliremoves base pair mismatches from DNA. The products of themutH,mutLandmutSgenes, among others, are required for efficient mismatch repair. Absence of any of these gene products leads to persistence of mismatches in DNA with a resultant increase in spontaneous mutation rate. To determine the specificity of the mismatch repair system in vivo we have isolated and characterized 47 independent mutations from amutHstrain in the plasmid borne mnt repressor gene. The major class of mutations comprises AT to GC transitions that occur within six base pairs of the only two 5'-GATC-3' sequences in the mnt gene. In the wild type control strain, insertion of the ISl element was the major spontaneous mutational event. A prediction of the Dam-directed mismatch repair model, that the mutation spectra of dam and mutH strains should be the same, was confirmed.
DOI:
10.1016/b978-0-12-456270-7.x5001-2
发表时间:
1988
期刊:
Immunology today
影响因子:
--
作者:
K. Low
通讯作者:
K. Low
DOI:
--
发表时间:
1985
期刊:
影响因子:
--
作者:
R. Zagursky;K. Baumeister;N. Lomax;M. Berman
通讯作者:
M. Berman