title: Purification of DNA-dependent RNA polymerase from Streptomyces granaticolor.
abstract: RNA nucleotidyltransferase (EC 2.7.7.6) of Streptomyces granaticolor was purified by precipitation with polymin P and ammonium sulphate, affinity chromatography on DNA- cellulose and gell filtration on Biogel A 1.5 m. SDS-polyacrylamide gel electrophoresis revealed 8 protein bands of molar mass ranging from 37 to 130 kg/mol. Proteins of molar mass of 130 and 120 kg/mol were identified to be beta and beta subunits, respectively. The role of other subunits of the enzyme is discussed.
mesh_terms: D001426:Bacterial Proteins / Q000032:analysis; D011232:Chemical Precipitation; D002846:Chromatography, Affinity; D002850:Chromatography, Gel; D012321:DNA-Directed RNA Polymerases / Q000032:analysis / Q000302:isolation & purification*; D004591:Electrophoresis, Polyacrylamide Gel; D013302:Streptomyces / Q000201:enzymology*
chemical_list: D001426:Bacterial Proteins; D012321:DNA-Directed RNA Polymerases