| carotenoid and retinoid--two pigments in a gecko eye lens. | the eye lenses of the moroccan day gecko quedenfeldtia trachyblepharus contain two different pigments: a retinoid (minor pigment) and a carotenoid (major pigment). the retinoid, all-trans 3, 4-didehydroretinol, is bound to iota-crystallin, which comprises only 2% of the total amount of crystallins. the carotenoid is associated to gammas-crystallin - comprising about 10% of total amount of crystallins--and causes the dark yellow colour of the lens. the absorption spectrum of the isolated caroteno ... | 2000 | 10779736 |