ENTRY       EC 3.5.4.26
NAME        Diaminohydroxyphosphoribosylaminopyrimidine deaminase
CLASS       Hydrolases
            Acting on carbon-nitrogen bonds, other than peptide bonds
            In cyclic amidines
SYSNAME     2,5-Diamino-6-hydroxy-4-(5-phosphoribosylamino)-pyrimidine
            $ 2-aminohydrolase
REACTION    2,5-Diamino-6-hydroxy-4-(5'-phosphoribosylamino)-pyrimidine +
            H2O = 5-Amino-6-(5'-phosphoribosylamino)uracil + NH3
SUBSTRATE   2,5-Diamino-6-hydroxy-4-(5'-phosphoribosylamino)-pyrimidine
            H2O
PRODUCT     5-Amino-6-(5'-phosphoribosylamino)uracil
            NH3
COMMENT     The substrate is the product of EC 3.5.4.25.
PATHWAY     PATH: MAP00740  Riboflavin metabolism
DBLINKS     University of Geneva ENZYME DATA BANK: 3.5.4.26
            WIT (What Is There) Metabolic Reconstruction: 3.5.4.26
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