Mechanism of inhibition of xanthine oxidoreductase by allopurinol: crystal structure of reduced bovine milk xanthine oxidoreductase bound with oxipurinol.Okamoto, K., Eger, B.T., Nishino, T., Pai, E.F., Nishino, T.
(2008) Nucleosides Nucleotides Nucleic Acids 27: 888-893
- PubMed: 18600558
- DOI: 10.1080/15257770802146577
- PubMed Abstract:
- Y-700[1-[3-CYANO-4-(2,2-DIMETHYLPROPOXY)PHENYL]-1H-PYRAZOLE-4-CARBOXYLIC ACID]: A Potent Xanthine Oxidoreductase Inhibitor with Hepatic excretion
Fukunari, A.,Okamoto, K.,Nishino, T.,Eger, B.T.,Pai, E.F.,Kamezawa, M.,Yamada, I.,Kato, N.
(2004) J.PHARMACOL.EXP.THER. 311: 519
- An extremely potent inhibitor of Xanthine Oxidoreductase Crystal Structure of the enzyme-inhibitor complex and Mechanism of Inhibition
Okamoto, K.,Eger, B.T.,Nishino, T.,Kondo, S.,Pai, E.F.,Nishino, T.
(2003) J.Biol.Chem. 278: 1848
- Crystal Structures of the Active and Alloxanthine-inhibited forms of Xanthine Dehydrogenase from Rhodobacter Capsulatusa
Truglio, J.J.,Theis, K.,Leimkuhler, S.,Rappa, R.,Rajagopalan, K.V.,Kisker, C.
(2002) Structure 10: 115
- The Crystal Structure of Xanthine Oxidoreductase during catalysis: Implications for reaction mechanism and enzyme inhibition
Okamoto, K.,Matsumoto, K.,Hille, R.,Eger, B.T.,Pai, E.F.,Nishino, T.
(2004) Proc.Natl.Acad.Sci.USA 101: 7931
Inhibitors of xanthine oxidoreductase block conversion of xanthine to uric acid and are therefore potentially useful for treatment of hyperuricemia or gout. We determined the crystal structure of reduced bovine milk xanthine oxidoreductase complexed ...
Inhibitors of xanthine oxidoreductase block conversion of xanthine to uric acid and are therefore potentially useful for treatment of hyperuricemia or gout. We determined the crystal structure of reduced bovine milk xanthine oxidoreductase complexed with oxipurinol at 2.0 A resolution. Clear electron density was observed between the N2 nitrogen of oxipurinol and the molybdenum atom of the molybdopterin cofactor, indicating that oxipurinol coordinated directly to molybdenum. Oxipurinol forms hydrogen bonds with glutamate 802, arginine 880, and glutamate 1261, which have previously been shown to be essential for the enzyme reaction. We discuss possible differences in the hypouricemic effect of inhibitors, including allopurinol and newly developed inhibitors, based on their mode of binding in the crystal structures.
Department of Biochemistry and Molecular Biology, Nippon Medical School, Tokyo, Japan.