4-Hydroxypyrazolo (3,4-d) pyrimidine as a substrate for xanthine oxidase: loss of conventional substrate activity with catalytic cycling of the enzyme.
D000493:Allopurinol; D000818:Animals; D002417:Cattle; D003580:Cytochromes; D004579:Electron Transport; D005182:Flavin-Adenine Dinucleotide; D007700:Kinetics; D008892:Milk / Q000201:enzymology; D010100:Oxygen; D013053:Spectrophotometry; D013997:Time Factors; D014969:Xanthine Oxidase / Q000037:antagonists & inhibitors; D014970:Xanthines
D003580:Cytochromes; D014970:Xanthines; D005182:Flavin-Adenine Dinucleotide; D000493:Allopurinol; D014969:Xanthine Oxidase; D010100:Oxygen