cis-retinal

cis-retinal

(sĭs′rĕt′ĭ-năl, rĕt″năl) [L. prefix cis-, this side of + ″]
The form of retinal combined with a glycoprotein opsin (rhodopsin in rods) during darkness. Light striking the retina changes it to trans-retinal and begins the generation of a nerve impulse.
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More precisely, when an 11 cis-retinal (isomer of retinal) chromophore absorbs a photon, it isomerizes from 11-cis to all- trans state.
Wave function collapse in retinal structure under aided/un-aided conditions
These different types of rhodopsins all share a similar tertiary structure and the same common chromophore, cis-retinal, although their amino acid sequences will inevitable be different.
Mind as a virtual phase-conjugated hologram

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