Subunit structure of bovine milk xanthine oxidase. Effect of limited cleavage by proteolytic enzymes on activity and structure.


Bovine milk xanthine oxidase (xanthine:oxygen oxidoreductase, EC has been purified by a modified method without the use of proteases, and its structure has been analyzed by polyacrylamide gel electrophoresis. Native xanthine oxidase is found to consist of only two polypeptide chains A with molecular weights of 150 000 each. These chains have NH2… (More)


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