One of the mysteries of the English language finally explained.
A protein which forms part of the visual pigment rhodopsin and is released by the action of light.
- ‘Every photopigment consists of a derivative of vitamin A linked to a protein molecule called an opsin.’
- ‘Visual pigments are composed of a light-absorbing chromophore that is bound to the protein opsin.’
- ‘Rhodopsin consists of a protein called opsin bonded to a pigment called retinal.’
- ‘Vitamin A then combines with a protein opsin to form rhodopsin.’
- ‘The transport of opsin to the outer segment of photoreceptor cells seems especially critical for viability of these cells.’
1950s: shortening of rhodopsin.
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