<prompt> All of the following are true about Xanthine oxidase, EXCEPT:Contains ironContains molybdenumFlavoproteinProduces H2O  <response>: Xanthine oxidase is a flavoprotein containing both molybdenum and iron-sulphur clusters. Deficiency of xanthine oxidase leads to hyperuricemia. Look at the reaction. Xanthine oxidase produces H2O2Hydrogen peroxide, not H2O. 