The Enzyme Database

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EC 3.6.1.61     
Accepted name: diadenosine hexaphosphate hydrolase (ATP-forming)
Reaction: (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
Other name(s): Ndx1
Systematic name: P1,P6-bis(5′-adenosyl)hexaphosphate nucleotidohydrolase (ATP-forming)
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: BRENDA, EXPASY, KEGG, MetaCyc
References:
1.  Iwai, T., Kuramitsu, S. and Masui, R. The Nudix hydrolase Ndx1 from Thermus thermophilus HB8 is a diadenosine hexaphosphate hydrolase with a novel activity. J. Biol. Chem. 279 (2004) 21732–21739. [PMID: 15024014]
[EC 3.6.1.61 created 2012]
 
 


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