title: Physical studies on Escherichia coli B RNA polymerase and its subunits.
mesh_terms: D000596:Amino Acids / Q000032:analysis; D002499:Centrifugation, Density Gradient; D002501:Centrifugation, Zonal; D002850:Chromatography, Gel; D004589:Electrophoresis, Disc; D004926:Escherichia coli / Q000201:enzymology*; D005815:Genetic Code; D008970:Molecular Weight; D012316:RNA Nucleotidyltransferases / Q000032:analysis; D013386:Succinates; D014461:Ultracentrifugation; D014508:Urea
chemical_list: D000596:Amino Acids; D013386:Succinates; D014508:Urea; D012316:RNA Nucleotidyltransferases