4-pyridoxolactonase
In enzymology, a 4-pyridoxolactonase (EC 3.1.1.27) is an enzyme that catalyzes the chemical reaction
- 4-pyridoxolactone + H2O 4-pyridoxate
| 4-pyridoxolactonase | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Identifiers | |||||||||
| EC number | 3.1.1.27 | ||||||||
| CAS number | 37278-41-4 | ||||||||
| 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 | ||||||||
| |||||||||
Thus, the two substrates of this enzyme are 4-pyridoxolactone and H2O, whereas its product is 4-pyridoxate.
This enzyme belongs to the family of hydrolases, specifically those acting on carboxylic ester bonds. The systematic name of this enzyme class is 4-pyridoxolactone lactonohydrolase. This enzyme participates in vitamin B6 metabolism.
References
- Burg RW, Snell EE (1969). "The bacterial oxidation of vitamin B6. VI. Pyridoxal dehydrogenase and 4-pyridoxolactonase". J. Biol. Chem. 244 (10): 2585–9. PMID 4306030.
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