title: Purification of nucleosidediphosphatase of rat liver by metal-chelate affinity chromatography.
abstract: A procedure is presented for the purification of nucleosidediphosphatase (nucleosidediphosphate phosphohydrolase, EC 3.6.1.6) of rat liver by affinity chromatography using metal conjugated to epoxy-activated Sepharose 6B. The enzyme is eluted from the conjugate by a solution of L-histidine. The enzyme, when bound to metal-chelate gel, is active in a suspended form, suggesting that the catalytic site is different from the site that binds to the metal-chelate gels. Substrate specificity and Km value of the enzyme obtained are similar to those of the enzyme obtained from the same sources by a conventional procedure, indicating that the metal-chelate affinity chromatography does not bring about any substantial change in the catalytic properties.
mesh_terms: D017766:Acid Anhydride Hydrolases; D000818:Animals; D002846:Chromatography, Affinity / Q000379:methods*; D008670:Metals; D008862:Microsomes, Liver / Q000201:enzymology*; D010744:Phosphoric Monoester Hydrolases / Q000302:isolation & purification*; D051381:Rats; D012685:Sepharose
chemical_list: D008670:Metals; D012685:Sepharose; D010744:Phosphoric Monoester Hydrolases; D017766:Acid Anhydride Hydrolases; C023837:nucleoside-diphosphatase