RHODOPSIN

Rhodopsin

Rhodopsin, also known as visual purple, is a biological pigment in photoreceptor cells of the retina that is responsible for the first events in the perception of light. Rhodopsins belong to the G-protein-coupled receptor family and are extremely sensitive to light, enabling vision in low-light conditions. Exposed to light, the pigment immediately photobleaches, and it takes about 45 minutes to regenerate fully in humans.

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rhodopsin

Noun

  1. A light-sensitive pigment in the rod cells of the retina; it consists of an opsin protein bound to the carotenoid retinal


The above text is a snippet from Wiktionary: rhodopsin
and as such is available under the Creative Commons Attribution/Share-Alike License.

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