| Name | Melanopsin |
| Description | Photoreceptor required for regulation of circadian rhythm. Contributes to pupillar reflex and other non-image forming responses to light. May be able to isomerize covalently bound all-trans retinal back to 11-cis retinal (By similarity). |
| UniProt ID | Q9UHM6 |
| Gene | OPN4 |
