Biochemical and photochemical analyses of retinal proteins in chicken cone cells

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Abstract

Absorption of light by several types of cone cell with different spectral sensitivities initiates in vertebrates photopic vision which includes color discrimination. In order to understand the conversion mechanism of a photon signal in the cones, photochemical reactions of iodopsin, the red-sensitive cone visual pigment of chicken, and its interaction with a G-protein were investigated and compared with those of rhodopsin, the visual pigment in rod cells that are responsible for scotopic vision. The results obtained indicate that the photo-bleaching processes, of both pigments and the signal transduction processes in the two types of the cell are similar to, but somewhat different from each other. This could partly explain the differences between the physiological responses of the different cells. © 1991 IUPAC

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Yoshizawa, T., Shichida, Y., & Fukada, Y. (1991). Biochemical and photochemical analyses of retinal proteins in chicken cone cells. Pure and Applied Chemistry, 63(1), 171–176. https://doi.org/10.1351/pac199163010171

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