bis(5'-nucleosyl)-tetraphosphatase (asymmetrical) activity https://github.com/geneontology/go-ontology/issues/30193 1-P,4-P-bis(5'-nucleosyl)-tetraphosphate nucleotidohydrolase activity GO:0004081 Ap(4)A hydrolase activity diadenosine 5',5'''-P1,P4-tetraphosphate asymmetrical hydrolase activity Catalysis of the reaction: P(1),P(4)-bis(5'-nucleosyl)tetraphosphate + H2O = NTP + NMP. Acts on bis(5'-guanosyl)-, bis(5'-xanthosyl)-, bis(5'-adenosyl)- and bis(5'-uridyl)-tetraphosphate. MetaCyc:3.6.1.17-RXN diadenosinetetraphosphatase (asymmetrical) activity molecular_function dinucleoside tetraphosphatase activity Reactome:R-HSA-5696197 RHEA:22484 bis(5'-guanosyl)-tetraphosphatase activity diguanosinetetraphosphatase (asymmetrical) activity bis(5'-adenosyl)-tetraphosphatase activity dinucleosidetetraphosphatase (asymmetrical) activity diadenosine 5',5'''-P1,P4-tetraphosphate hydrolase EC:3.6.1.17 Ap4A hydrolase activity Ap4Aase activity diadenosine 5',5'''-P(1),P(4)-tetraphosphate asymmetrical hydrolase activity P1,P4-bis(5'-nucleosyl)-tetraphosphate nucleotidohydrolase activity diadenosine P1,P4-tetraphosphatase activity Ap(4)Aase activity bis(5'-nucleosyl)-tetraphosphatase activity