Catalysis of formation of mixed disulfides between cystine and beta-globulins by copper ions.
D000818:Animals; D002417:Cattle; D055598:Chemical Phenomena; D002621:Chemistry; D002712:Chlorides; D003035:Cobalt; D003300:Copper; D003553:Cystine; D004492:Edetic Acid; D005916:Globulins; D005971:Glutamates; D007501:Iron; D008345:Manganese; D008628:Mercury; D008660:Metabolism; D013431:Sulfates; D013440:Sulfides; D013460:Sulfur Isotopes; D015032:Zinc
D002712:Chlorides; D005916:Globulins; D005971:Glutamates; D013431:Sulfates; D013440:Sulfides; D013460:Sulfur Isotopes; D003035:Cobalt; D008345:Manganese; D003553:Cystine; D003300:Copper; D004492:Edetic Acid; D007501:Iron; D008628:Mercury; D015032:Zinc