In enzymology, a tetrahydroxypteridine cycloisomerase (EC 5.5.1.3) is an enzyme that catalyzes the chemical reaction
| tetrahydroxypteridine cycloisomerase | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Identifiers | |||||||||
| EC no. | 5.5.1.3 | ||||||||
| CAS no. | 37318-54-0 | ||||||||
| 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 | ||||||||
| |||||||||
- tetrahydroxypteridine xanthine-8-carboxylate
Hence, this enzyme has one substrate, tetrahydroxypteridine, and one product, xanthine-8-carboxylate.
This enzyme belongs to the family of isomerases, specifically the class of intramolecular lyases. The systematic name of this enzyme class is tetrahydroxypteridine lyase (isomerizing). It employs one cofactor, NAD+.
References edit
- Mcnutt WS, Damle SP (December 1964). "Tetraoxypteridine isomerase". The Journal of Biological Chemistry. 239: 4272–9. PMID 14247682.
