In enzymology, a selenide, water dikinase (EC 2.7.9.3) is an enzyme that catalyzes the chemical reaction
| selenide, water dikinase | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Identifiers | |||||||||
| EC no. | 2.7.9.3 | ||||||||
| 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 | ||||||||
| |||||||||
- ATP + selenide + H2O AMP + selenophosphate + phosphate
The 3 substrates of this enzyme are ATP, selenide, and H2O, whereas its 3 products are AMP, selenophosphate, and phosphate.
This enzyme belongs to the family of transferases, to be specific, those transferring phosphorus-containing groups (phosphotransferases) with paired acceptors (dikinases). The systematic name of this enzyme class is ATP:selenide, water phosphotransferase. This enzyme is also called selenophosphate synthetase. This enzyme participates in selenoamino acid metabolism.
References
edit- Veres Z, Tsai L, Scholz TD, Politino M, Balaban RS, Stadtman TC (1992). "Synthesis of 5-methylaminomethyl-2-selenouridine in tRNAs: 31P NMR studies show the labile selenium donor synthesized by the selD gene product contains selenium bonded to phosphorus". Proc. Natl. Acad. Sci. U.S.A. 89 (7): 2975–9. Bibcode:1992PNAS...89.2975V. doi:10.1073/pnas.89.7.2975. PMC 48786. PMID 1557403.
