ID 3.5.4.26 DE diaminohydroxyphosphoribosylaminopyrimidine deaminase. CA 2,5-diamino-6-hydroxy-4-(5-phosphoribosylamino)-pyrimidine + H(+) + H2O = CA 5-amino-6-(5-phospho-D-ribosylamino)uracil + NH4(+). CC -!- The substrate is the product of EC 3.5.4.25. DR P87241, RIB2_SCHPO ; Q12362, RIB2_YEAST ; P57533, RIBD1_BUCAI; DR Q8K9A4, RIBD1_BUCAP; P50853, RIBD_ACTPL ; O66534, RIBD_AQUAE ; DR Q8GWP5, RIBD_ARATH ; P70814, RIBD_BACAM ; P17618, RIBD_BACSU ; DR Q89AB0, RIBD_BUCBP ; Q9PLJ6, RIBD_CHLMU ; Q9Z735, RIBD_CHLPN ; DR O84735, RIBD_CHLTR ; O24750, RIBD_CORAM ; P25539, RIBD_ECOLI ; DR P44326, RIBD_HAEIN ; B6TRH4, RIBD_MAIZE ; P9WPH0, RIBD_MYCTO ; DR P9WPH1, RIBD_MYCTU ; Q55158, RIBD_SYNY3 ; //