The only action of light on the pigment of cone vision, iodopsin, as on the rod pigment rhodopsin, is to isomerize its chromophore from 11-cis to all-trans. All further changes are “dark” consequences ...

This is a preview. Log in through your library . Abstract Measurement of the primary photochemical reaction of iodopsin, a chicken red-sensitive cone visual pigment, was carried out at room ...

Crayfish eye extracts contain two visual pigments resembling in spectrum vertebrate rhodopsin and iodopsin. In these crayfish, as in primates, the “iodopsin” appears to be the red sensitive pigment of ...