Article
Photosensitivities of rhodopsin mutants with a displaced counterion.
Biochemistry - 30 Nov 2010
Tsutsui Kei, Shichida Yoshinori
Abstract excerpt
Visual pigments consist of a protein moiety opsin and an 11-cis-retinal chromophore that is covalently bound to the opsin via a Schiff base linkage. They have a high photosensitivity, which can be attributed to the high probability of photon absorption and the high photoisomerization quantum yield of the retinal chromophore. Both of these parameters are regulated by the opsin, though the precise mechanism is...
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