Abstract
Kinetic parameters of the thermal decay of squid rhodopsin in isolated photoreceptor membranes and in a 1% Triton X-100 solution have been determined. It has been shown that the treatment with Triton X-100 considerably decreases thermal stability of rhodopsin. Addition of hydroxylamine (0.5 m) to Triton X-100 solutions leads to further decrease of rhodopsin thermostability. When Triton extracts are exposed to light, bleaching of visual pigments occurs at room temperature.
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