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| | Inhibition Assay |
| Description: | The inhibition of the activity of xanthine oxidase (XO) is tested through a coupled enzymatic reaction of xanthine oxidase, horseradish peroxidase (HRP) and a substrate thereof. First, xanthine oxidase oxidizes hypoxanthine to produce xanthine and hydrogen peroxide, and further oxidizes xanthine to produce uric acid and hydrogen peroxide. Then, hydrogen peroxide reacts with 10-acetyl-3,7-dihydroxyphenoxazine (Ampliflu Red) under catalytic action of horseradish peroxidase so as to produce resorufin, a compound with strong fluorescence. The fluorescence intensity of resorufin is determined by using a fluorescence microplate, which is in direct proportion to the activity of xanthine oxidase. |
| Affinity data for this assay | |
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