In enzymology, a ribose-5-phosphate—ammonia ligase (EC 6.3.4.7) is an enzyme that catalyzes the chemical reaction
| Ribose-5-phosphate—ammonia ligase | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Identifiers | |||||||||
| EC no. | 6.3.4.7 | ||||||||
| CAS no. | 9082-52-4 | ||||||||
| 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 | ||||||||
| |||||||||
- ATP + ribose 5-phosphate + NH3 ADP + phosphate + 5-phosphoribosylamine
The 3 substrates of this enzyme are ATP, ribose 5-phosphate, and NH3, whereas its 3 products are ADP, phosphate, and 5-phosphoribosylamine.
This enzyme belongs to the family of ligases, specifically those forming generic carbon-nitrogen bonds. The systematic name of this enzyme class is ribose-5-phosphate:ammonia ligase (ADP-forming). This enzyme participates in purine metabolism.
References
edit- Reem GH (November 1968). "Enzymatic synthesis of 5'-phosphoribosylamine from ribose 5-phosphate and ammonia, an alternate first step in purine biosynthesis". The Journal of Biological Chemistry. 243 (21): 5695–701. PMID 5699059.
