title: New rifampin-resistant mutant of Escherichia coli.
abstract: A rifampin-resistant ribonucleic acid (RNA) polymerase mutant, rif(r)51, derived from a presumptive RNA synthesis mutant of Escherichia coli K-12, complements rif(r) RNA polymerase mutants isolated from other strains of E. coli K-12.
mesh_terms: D004352:Drug Resistance, Microbial; D004926:Escherichia coli / Q000187:drug effects* / Q000201:enzymology / Q000302:isolation & purification; D005816:Genetic Complementation Test; D005827:Genetics, Microbial; D009154:Mutation; D012316:RNA Nucleotidyltransferases / Q000378:metabolism; D012293:Rifampin / Q000494:pharmacology*
chemical_list: D012316:RNA Nucleotidyltransferases; D012293:Rifampin