title: Interaction of rifamycin with bacterial RNA polymerase.
mesh_terms: D002247:Carbon Isotopes; D002499:Centrifugation, Density Gradient; D002845:Chromatography; D004926:Escherichia coli / Q000201:enzymology*; D012316:RNA Nucleotidyltransferases / Q000378:metabolism*; D012293:Rifampin / Q000378:metabolism*
chemical_list: D002247:Carbon Isotopes; D012316:RNA Nucleotidyltransferases; D012293:Rifampin