ENTRY EC 3.5.4.24 NAME Sepiapterin deaminase CLASS Hydrolases Acting on carbon-nitrogen bonds, other than peptide bonds In cyclic amidines SYSNAME Sepiapterin aminohydrolase REACTION Sepiapterin + H2O = Xanthopterin-B2 + NH3 SUBSTRATE Sepiapterin H2O PRODUCT Xanthopterin-B2 NH3 COMMENT Also acts on isosepiapterin, more slowly. DBLINKS University of Geneva ENZYME DATA BANK: 3.5.4.24 WIT (What Is There) Metabolic Reconstruction: 3.5.4.24 ///