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
- OpenAlex
- https://openalex.org/W1908546530
- Semantic Scholar
- https://api.semanticscholar.org/CorpusID:8123135
Keywords
Mutant, Biology, Mutagenesis, Escherichia coli, O-6-methylguanine-DNA methyltransferase
References
- Induction of resistance to alkylating agents in E. coli: the ada+ gene product serves both as a regulatory protein and as an enzyme for repair of mutagenic damage.
- Base-pairing properties of O6-methylguanine in template DNA during in vitro DNA replication.
- Isolation and characterization of Escherichia coli K-12 mutants unable to induce the adaptive response to simple alkylating agents
- Construction of an Escherichia coli K-12 ada deletion by gene replacement in a recD strain reveals a second methyltransferase that repairs alkylated DNA
- Repair of alkylated DNA in Escherichia coli. Physical properties of O6-methylguanine-DNA methyltransferase.
- Experiments in molecular genetics
- Functional domains and methyl acceptor sites of the Escherichia coli ada protein.
- Characterization of the major DNA repair methyltransferase activity in unadapted Escherichia coli and identification of a similar activity in Salmonella typhimurium
- Phasmid vectors for identification of genes by complementation of Escherichia coli mutants
- Pathways of mutagenesis and repair in Escherichia coli exposed to low levels of simple alkylating agents
- Nonenzymatic methylation of DNA by the intracellular methyl group donor S‐adenosyl‐L‐methionine is a potentially mutagenic reaction.
- Multiple species of Bacillus subtilis DNA alkyltransferase involved in the adaptive response to simple alkylating agents
- Escherichia coli gene induction by alkylation treatment.
- A collection of strains containing genetically linked alternating antibiotic resistance elements for genetic mapping of Escherichia coli.
- Mutation spectrum in Escherichia coli DNA mismatch repair deficient (mutH) strain.
- Purification of the E. coli ogt gene product to homogeneity and its rate of action on O6-methylguanine, O6-ethylguanine and O4-methylthymine in dodecadeoxyribonucleotides.
- A set of lacZ mutations in Escherichia coli that allow rapid detection of each of the six base substitutions.
- A constitutive O6-methylguanine-DNA methyltransferase of Rhizobium meliloti.
- Efficiency of the adaptive response of Escherichia coli to alkylating agents
- Methyl phosphotriesters in alkylated DNA are repaired by the Ada regulatory protein of E. coli.
Cited by
- The influence of DNA glycosylases on spontaneous mutation.
- Contribution of E. coli AlkA, TagA glycosylases and UvrABC-excinuclease in MMS mutagenesis.
- Structure, function, and inhibition of O6-alkylguanine-DNA alkyltransferase.
- Nanostructures d'ADN supportées sur billes magnétiques de nouveaux outils senseurs des systèmes de réparation de l'ADN
- Impacte dels sistemes de reparació de lesions produïdes per agents alquilants en la virulència de Salmonella enterica ser. Typhimurium
- Identification of SoxS-Regulated Genes inSalmonella enterica Serovar Typhimurium
- Adaptive mutagenesis: a process that generates almost exclusively beneficial mutations
- A single amino acid change in human O6-alkylguanine-DNA alkyltransferase decreasing sensitivity to inactivation by O6-benzylguanine.
- Alteration of the conserved residue tyrosine-158 to histidine renders human O6-alkylguanine-DNA alkyltransferase insensitive to the inhibitor O6-benzylguanine.
- The origin of point mutations in human tumor cells.
- Construction and characterization of mutants of Salmonella typhimurium deficient in DNA repair of O6-methylguanine
- Escherichia coli DNA glycosylase Mug: a growth‐regulated enzyme required for mutation avoidance in stationary‐phase cells
- Overexpression of enzymes that repair endogenous damage to DNA.
- Base excision repair.
- DNA repair and protection mechanisms in Escherichia coli and Mycobacterium tuberculosis
- The Escherichia coli AlkB protein protects human cells against alkylation-induced toxicity
- Tumor-Associated Mutations in O6-Methylguanine DNA-Methyltransferase (MGMT) Reduce DNA Repair Functionality
- Alkylation damage in mammalian cells : an analysis of the mutagenic potential of O4-methylthymine adducts
- Directed mutation: between unicorns and goats
- Engineering human DNA alkyltransferases for gene therapy using random sequence mutagenesis.
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