ENTRY       EC 3.5.4.11
NAME        Pterin deaminase
CLASS       Hydrolases
            Acting on carbon-nitrogen bonds, other than peptide bonds
            In cyclic amidines
SYSNAME     2-Amino-4-hydroxypteridine aminohydrolase
REACTION    2-Amino-4-hydroxypteridine + H2O = 2,4-Dihydroxypteridine + NH3
SUBSTRATE   2-Amino-4-hydroxypteridine
            H2O
PRODUCT     2,4-Dihydroxypteridine
            NH3
COMMENT     The animal enzyme is specific for pterin, isoxanthopterin and
            tetrahydropterin.
DBLINKS     University of Geneva ENZYME DATA BANK: 3.5.4.11
            WIT (What Is There) Metabolic Reconstruction: 3.5.4.11
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