Retinal isomerase (EC 5.2.1.3) is an enzyme that catalyzes the isomerisation of all-trans-retinal in the eye into 11-cis-retinal which is the form that most opsins bind.
- all-trans-retinal 11-cis-retinal
| retinal isomerase | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Identifiers | |||||||||
| EC no. | 5.2.1.3 | ||||||||
| CAS no. | 9023-76-1 | ||||||||
| 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 | ||||||||
| |||||||||
Hence, this enzyme has one substrate, all-trans-retinal, and one product, 11-cis-retinal.
This enzyme belongs to the family of isomerases, specifically cis-trans isomerases. Its systematic name is all-trans-retinal 11-cis-trans-isomerase. Other names are retinene isomerase, and retinoid isomerase. This enzyme participates in the retinol metabolism.
References
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