In enzymology, an urate-ribonucleotide phosphorylase (EC 2.4.2.16) is an enzyme that catalyzes the chemical reaction
| urate-ribonucleotide phosphorylase | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Identifiers | |||||||||
| EC no. | 2.4.2.16 | ||||||||
| CAS no. | 9030-29-9 | ||||||||
| 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 | ||||||||
| |||||||||
- urate D-ribonucleotide + phosphate urate + alpha-D-ribose 1-phosphate
Thus, the two substrates of this enzyme are urate D-ribonucleotide and phosphate, whereas its two products are urate and alpha-D-ribose 1-phosphate.
This enzyme belongs to the family of glycosyltransferases, specifically the pentosyltransferases. The systematic name of this enzyme class is urate-ribonucleotide:phosphate alpha-D-ribosyltransferase. Other names in common use include UAR phosphorylase, and urate-ribonucleotide:phosphate D-ribosyltransferase. This enzyme participates in purine metabolism.
References
edit- Laster L, Blair A (October 1963). "An intestinal phosphorylase for uric acid ribonucleoside". The Journal of Biological Chemistry. 238: 3348–57. PMID 14085385.
