title: mutM, a second mutator locus in Escherichia coli that generates G.C----T.A transversions.
abstract: We used strains carrying specific lacZ alleles to identify a new mutator locus in Escherichia coli which generates only G.C----T.A transversions among base substitutions. The locus, mutM, mapped near the cysE locus, which is at 81 min on the genetic map.
mesh_terms: D001482:Base Composition; D004926:Escherichia coli / Q000235:genetics*; D005798:Genes, Bacterial; D009154:Mutation; D015183:Restriction Mapping