Absorption spectra of rhodopsin

Absorption spectra of rhodopsin and of 11-cw-retinal in hexane solution. The absorption of rhodopsin in the 280-nm region is due mainly to the opsin. 

Fig. I I. Absorption spectra of rhodopsin analog6 [150], (a) At 77 K. before irradiations, (b) After irradiation for 10 min with 460 nm light, (c) After a second irradiation of 10 min with 520 nm light. All of these spectra are superimposable. The two traces in the lower part of the figure are, respectively, the difference spectrum (expanded 10-fold) between curves (a) and (b) (top), and between curves (b) and (c) (bottom).

Fig. 4.24 Normalized absorption spectra of rhodopsin from human retinal rod cells (curve 2), and cone-opsins from human blue , green and red cone cells (curves 1, 3 and 4, respectively). The spectra are drawn as described by Stavenga et al. [151]...

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