title: [Purification of E. coli RNA polymerase].
mesh_terms: D002499:Centrifugation, Density Gradient; D055598:Chemical Phenomena; D002621:Chemistry; D002848:Chromatography, DEAE-Cellulose; D012321:DNA-Directed RNA Polymerases / Q000302:isolation & purification*; D004926:Escherichia coli / Q000201:enzymology*; D007700:Kinetics; D008722:Methods
chemical_list: D012321:DNA-Directed RNA Polymerases