ID   3.6.1.17
DE   Bis(5'-nucleosyl)-tetraphosphatase (asymmetrical).
AN   Ap(4)A hydrolase.
AN   Ap(4)Aase.
AN   Ap4A hydrolase.
AN   Ap4Aase.
AN   Bis(5'-adenosyl)-tetraphosphatase.
AN   Bis(5'-guanosyl)-tetraphosphatase.
AN   Diadenosine 5',5'''-P(1),P(4)-tetraphosphate asymmetrical hydrolase.
AN   Diadenosinetetraphosphatase (asymmetrical).
AN   Diguanosinetetraphosphatase (asymmetrical).
AN   Dinucleosidetetraphosphatase (asymmetrical).
CA   P(1),P(4)-bis(5'-guanosyl) tetraphosphate + H(2)O = GTP + GMP.
CC   -!- Also acts on bis(5'-xanthosyl)-tetraphosphate and, more slowly,
CC       on bis(5'-adenosyl)-tetraphosphate and bis(5'-uridyl)-tetraphosphate
CC       (cf. EC 3.6.1.41).
PR   PROSITE; PDOC00694;
PR   PROSITE; PDOC00695;
DR   Q29RJ1, AP4A_BOVIN ;  P50583, AP4A_HUMAN ;  P56380, AP4A_MOUSE ;
DR   P50584, AP4A_PIG   ;  Q6PEC0, AP4A_RAT   ;  P49776, APH1_SCHPO ;
DR   Q9C6Z2, NUD25_ARATH;  Q9CAF2, NUD26_ARATH;  B7GLK2, PRPE_ANOFW ;
DR   A7Z3F2, PRPE_BACA2 ;  C3P3Q5, PRPE_BACAA ;  C3LBR5, PRPE_BACAC ;
DR   A0RB32, PRPE_BACAH ;  Q81TQ0, PRPE_BACAN ;  B7JEP5, PRPE_BACC0 ;
DR   Q73BU4, PRPE_BACC1 ;  B7ILE8, PRPE_BACC2 ;  C1ELB5, PRPE_BACC3 ;
DR   B7HGW3, PRPE_BACC4 ;  B7I0B6, PRPE_BACC7 ;  A7GM94, PRPE_BACCN ;
DR   B9IU03, PRPE_BACCQ ;  Q81GJ7, PRPE_BACCR ;  Q63EG2, PRPE_BACCZ ;
DR   Q9K907, PRPE_BACHD ;  Q6HLX9, PRPE_BACHK ;  Q65LA0, PRPE_BACLD ;
DR   O31614, PRPE_BACSU ;  A9VJS5, PRPE_BACWK ;  Q5L1R3, PRPE_GEOKA ;
DR   C5D7A6, PRPE_GEOSW ;  A4IL88, PRPE_GEOTN ;  Q8ERS7, PRPE_OCEIH ;
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