Visual pigments are the light-absorbing molecules that mediate vision. They consist of an apoprotein, opsin, covalently linked to cis-retinal. Expressed in retina (at protein level) (PubMed:30948514). Expressed in cone and/or rod photoreceptor cells (at protein level) (PubMed:30948514). Phosphorylated on some or all of the serine and threonine residues present in the C-terminal region. Belongs to the G-protein coupled receptor 1 family. Opsin subfamily.