retinal protein formed by the action of light on rhodopsin
opsin详细解释
op.sin n.（名词）A protein of the retina, especially the protein constituent of rhodopsin, that makes up one of the visual pigments.视蛋白：视蛋白，尤指由视黄醛蛋白组成的元素，它是组成视色素的元素之一 来源：Probably back-formation from rhodopsin 可能源自 rhodopsin的逆成词
