EC |
2.7.7.45 |
Accepted name: |
guanosine-triphosphate guanylyltransferase |
Reaction: |
2 GTP = diphosphate + P1,P4-bis(5′-guanosyl) tetraphosphate |
Other name(s): |
diguanosine tetraphosphate synthetase; GTP-GTP guanylyltransferase; Gp4G synthetase; guanosine triphosphate-guanose triphosphate guanylyltransferase |
Systematic name: |
GTP:GTP guanylyltransferase |
Comments: |
Also acts, more slowly, on GDP to form P1,P3-bis(5′-guanosyl) triphosphate. |
Links to other databases: |
BRENDA, EXPASY, KEGG, MetaCyc, CAS registry number: 54576-89-5 |
References: |
1. |
Warner, A.H., Beers, P.C. and Huang, F.L. Biosynthesis of the diguanosine nucleotides. I. Purification and properties of an enzyme from yolk platelets of brine shrimp embryos. Can. J. Biochem. 52 (1974) 231–240. [PMID: 4208243] |
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[EC 2.7.7.45 created 1976] |
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