title: Mismatch correction at O6-methylguanine residues in E. coli DNA.
mesh_terms: D004260:DNA Repair; D004926:Escherichia coli / Q000235:genetics*; D006147:Guanine / Q000031:analogs & derivatives*; D008745:Methylation; D008769:Methylnitronitrosoguanidine / Q000494:pharmacology
chemical_list: D008769:Methylnitronitrosoguanidine; D006147:Guanine; C008449:O-(6)-methylguanine