Guanosine-3',5'-bis(diphosphate) 3'-diphosphatase
| guanosine-3′,5′-bis(diphosphate) 3′-diphosphatase | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Identifiers | |||||||||
| EC no. | 3.1.7.2 | ||||||||
| CAS no. | 70457-12-4 | ||||||||
| Databases | |||||||||
| IntEnz | IntEnz view | ||||||||
| BRENDA | BRENDA entry | ||||||||
| ExPASy | NiceZyme view | ||||||||
| KEGG | KEGG entry | ||||||||
| MetaCyc | metabolic pathway | ||||||||
| PRIAM | profile | ||||||||
| PDB structures | RCSB PDB PDBe PDBsum | ||||||||
| Gene Ontology | AmiGO / QuickGO | ||||||||
| |||||||||
The enzyme guanosine-3′,5′-bis(diphosphate) 3′-diphosphatase (EC 3.1.7.2)[1][2] catalyzes the reaction
- guanosine 3′,5′-bis(diphosphate) + H2O GDP + diphosphate
This enzyme belongs to the family of hydrolases, specifically those acting on diphosphoric monoester bonds. The systematic name is guanosine-3′,5′-bis(diphosphate) 3′-diphosphohydrolase. Other names in common use include guanosine-3′,5′-bis(diphosphate) 3′-pyrophosphatase, PpGpp-3'-pyrophosphohydrolase, and PpGpp phosphohydrolase. This enzyme participates in purine metabolism.
Structural studies[edit]
As of late 2007, only one structure has been solved for this class of enzymes, with the PDB accession code 1VJ7.
References[edit]
- ^ Heinemeyer EA, Richter D (1978). "Characterization of the guanosine 5'-triphosphate 3′-diphosphate and guanosine 5′-diphosphate 3′-diphosphate degradation reaction catalyzed by a specific pyrophosphorylase from Escherichia coli". Biochemistry. 17 (25): 5368–72. doi:10.1021/bi00618a007. PMID 365225.
- ^ Richter D, Fehr S, Harder R (1979). "The guanosine 3′,5′-bis(diphosphate) (ppGpp) cycle. Comparison of synthesis and degradation of guanosine 3′,5′-bis(diphosphate) in various bacterial systems". Eur. J. Biochem. 99 (1): 57–64. doi:10.1111/j.1432-1033.1979.tb13230.x. PMID 114395.
