Reaction: adenosine 5'-tetraphosphate + H2O = ATP + phosphate
Systematic name: adenosine-tetraphosphate phosphohydrolase
Comments: Also acts on inosine tetraphosphate and tripolyphosphate but shows little or no activity with other nucleotides or polyphosphates.
Links to other databases: BRENDA, EXPASY, KEGG, Metacyc, CAS registry number: 37289-26-2
1. Small, G.D. and Cooper, C. Purification and properties of nucleoside tetraphosphate hydrolase from rabbit muscle. Biochemistry 5 (1966) 14-26. [PMID: 4287215]