Guanosine-triphosphate guanylyltransferase
- Guanosine-triphosphate guanylyltransferase
In enzymology, a guanosine-triphosphate guanylyltransferase (EC number|2.7.7.45) is an enzyme that catalyzes the chemical reaction
:2 GTP diphosphate + P1,P4-bis(5'-guanosyl) tetraphosphate
Hence, this enzyme has one substrate, GTP, and two products, diphosphate and P1,P4-bis(5'-guanosyl) tetraphosphate.
This enzyme belongs to the family of transferases, specifically those transferring phosphorus-containing nucleotide groups (nucleotidyltransferases). The systematic name of this enzyme class is GTP:GTP guanylyltransferase. Other names in common use include diguanosine tetraphosphate synthetase, GTP-GTP guanylyltransferase, Gp4G synthetase, and guanosine triphosphate-guanose triphosphate guanylyltransferase.
References
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External links
::"The CAS registry number for this enzyme class is CAS registry|54576-89-5."
Gene Ontology (GO) codes
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