Increased spontaneous mutation and alkylation sensitivity of Escherichia coli strains lacking the ogt O6-methylguanine DNA repair methyltransferase

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Summary

It is inferred that there is an endogenous source of O6MeG or O4MeT DNA damage in E. coli that is prevalent in nondividing cells and that the Ogt MTase prevents mutagenesis by low levels of alkylating agents and that, in ada cells, the OGT MTase also protects cells from killing by alkyLating agents.

Type
article
Published
1991-03-01
Cited by
176
References
50
Access
Open access

Keywords

Mutant, Biology, Mutagenesis, Escherichia coli, O-6-methylguanine-DNA methyltransferase

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