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Formation of a pigment from K296G without the covalent bond between retinal and opsin. The figure shows a schematic representation of retinal binding in K296G compared with wild-type rhodopsin. The figure shows how K296G opsin can be reconstituted with retinylidene-n-propylamine Schiff base (nPrSB). K296G can form similar visual pigments with retinylidene-ethylamine Schiff base (EtSB) and retinylidene-methylamine Schiff base (MeSB).
