| 11. | Inhibition of xanthine oxidase has been proposed as a mechanism for improving cardiovascular health.
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| 12. | *Alloxanthine is an inhibitor of xanthine oxidase.
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| 13. | It is also an isostere of xanthine, the normal substrate for the enzyme.
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| 14. | AO is very similar in amino acid sequence to xanthine oxidase ( XO ).
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| 15. | Biologically relevant molecules identified so far include uracil, an RNA nucleobase, and xanthine.
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| 16. | Xanthine oxidase inhibitors block uric acid production.
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| 17. | Other enzymes capable of producing superoxide are xanthine oxidase, NADPH oxidases and cytochromes P450.
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| 18. | It is degraded by xanthine dehydrogenase to 2, 8-dihydroxyadenine ( DHA ).
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| 19. | "' Xanthosine "'is a nucleoside derived from xanthine and ribose.
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| 20. | The active metabolite of allopurinol is oxypurinol, which is also an inhibitor of xanthine oxidase.
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