EC 3.6.1.61 - Diadenosine hexaphosphate hydrolase (ATP-forming)
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IntEnz Enzyme Nomenclature
EC 3.6.1.61
Names
Accepted name:
diadenosine hexaphosphate hydrolase (ATP-forming)
Other
name:
Ndx1
Systematic name:
P1,P6-bis(5'-adenosyl)hexaphosphate nucleotidohydrolase (ATP-forming)
Reactions
- (1) P1,P6-bis(5'-adenosyl)hexaphosphate + H2O = 2 ATP
- (2) P1,P5-bis(5'-adenosyl)pentaphosphate + H2O = ATP + ADP
- (3) P1,P4-bis(5'-adenosyl)tetraphosphate + H2O = ATP + AMP
Cofactor
Comments:
The enzyme requires the presence of the divalent cations (Mn2+, Mg2+, Zn2+, and Co2+). It hydrolyses P1,P4-bis(5-guanosyl) tetraphosphate very slowly [cf. EC 3.6.1.17, bis(5-nucleosyl)-tetraphosphatase (asymmetrical)].
Links to other databases
UniProtKB/Swiss-Prot:
References
-
The Nudix hydrolase Ndx1 from Thermus thermophilus HB8 is a diadenosine hexaphosphate hydrolase with a novel activity.J. Biol. Chem. 279 : 21732-21739 (2004). [PMID: 15024014]
[EC 3.6.1.61 created 2012]