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Title
Activation of rhodopsin by light leads to the hyperpolarization of photoreceptor cells #219300373
Description
Rhodopsin is a light sensitive G-protein coupled receptor with retinal as cofactor. that stimulates the G-protein transducin, resulting in the liberation of its ñ subunit. This GTP-bound subunit in turn activates cGMP phosphodiesterase. cGMP phosphodiesterase hydrolyzes cGMP, lowering its local concentration. This leads finally to the hyperpolarization of photoreceptor cells, changing the rate