title: Purposeful mutations.
authors.forename: M F
authors.initials: MF
authors.lastname: Goodman
mesh_terms: D001426:Bacterial Proteins / Q000502:physiology; D004261:DNA Replication; D004259:DNA-Directed DNA Polymerase; D029968:Escherichia coli Proteins; D009154:Mutation; D013014:SOS Response, Genetics
chemical_list: D001426:Bacterial Proteins; D029968:Escherichia coli Proteins; C078202:UmuC protein, E coli; D004259:DNA-Directed DNA Polymerase; C055218:UmuD protein, E coli