Reaction: Photons induce isomerisation of 11c-retinyl to at-retinyl
- in pathway: The retinoid cycle in cones (daylight vision)
Upon photon absorption, 11-cis-retinal (11cRAL) is isomerised to all-trans-retinal (atRAL). The structure of cone opsins which can ultimately activate G-proteins to initiate phototransduction is denoted as R* (Fan et al. 2002). R* is still bound to atRAL at this stage. The isomerisation is a very fast photochemical process (femtoseconds) (Schoenlein et al. 1991) followed by slower events described in the following reaction.
Reaction - small molecule participants:
Photon [extracellular region]
Reactome.org reaction link: R-HSA-2465917
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Reaction input - small molecules:
photon
Reaction output - small molecules:
Reactome.org link: R-HSA-2465917