title: Limited digestion of RNA polymerase from Escherichia coli by trypsin (effect of rifamycin and DNA on the integrity of sigma subunit).
mesh_terms: D000818:Animals; D002417:Cattle; D004247:DNA; D012321:DNA-Directed RNA Polymerases; D004355:Drug Stability; D004926:Escherichia coli / Q000201:enzymology*; D046911:Macromolecular Substances; D008970:Molecular Weight; D012294:Rifamycins / Q000494:pharmacology*; D013950:Thymus Gland; D014357:Trypsin / Q000378:metabolism*
chemical_list: D046911:Macromolecular Substances; D012294:Rifamycins; D004247:DNA; D012321:DNA-Directed RNA Polymerases; D014357:Trypsin