opsin
Jump to navigation
Jump to search
Introduction
An opsin pineal or P-opsin is expressed in chick pineal. The sequence of P-opsin suggests it is maximally sensitive to light of approx 500 nm. Light-induced stimulation of P-opsin allegedly induces N-acetyl transferase activity which, in turn, supresses melatonin synthesis. Light stimulation also shifts the phase of the circadian rhythm of melatonin synthesis (entrainment). There are 3 human ospins
More general terms
More specific terms
- Blue-sensitive opsin; BOP; blue cone photoreceptor pigment (OPN1SW, BCP)
- green-sensitive opsin; green cone photoreceptor pigment (OPN1MW, GCP)
- medium-wave-sensitive opsin 2; Opsin 1 cone pigments medium-wave-sensitive 2 (OPN1MW2)
- medium-wave-sensitive opsin 3; opsin 1 cone pigments medium-wave-sensitive 3 (OPN1MW3)
- melanopsin; opsin-4 (OPN4, MOP)
- Opsin-3; encephalopsin; panopsin (OPN3, ECPN)
- opsin-5 (neuropsin, G-protein coupled receptor 136, G-protein coupled receptor PGR12, transmembrane protein 13, OPN5, GPR136, PGR12, TMEM13)
- red-sensitive opsin; red cone photoreceptor pigment (OPN1LW, RCP)