Genetic and biochemical characterization of little isoxanthopterin (lix), a gene controlling dihydropterin oxidase activity in Drosophila melanogaster.

Abstract excerpt

Dihydropterin oxidase catalyses the oxidation of 7,8-dihydropteridines into their fully oxidized products, and is involved in the biosynthesis of isoxanthopterin. Fifteen Drosophila melanogaster mutants, selected for their low pterin and isoxanthopterin content, were assayed for dihydropterin oxidase activity. The activity was around 100% in most mutants tested, slightly reduced in red, g and dke, and...

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