" A derivative of this molecule binds to light-sensitive membrane proteins called opsins.
Deficiency of this vitamin can lead to a buildup of keratin called Bitot's spots. Derivatives of this vitamin can be used to treat harlequin-type ichthyosis. Transthyretin transports thyroid protein T4 and a derivative of this vitamin. Ethanol acts as a competitive inhibitor to this vitamin since both are metabolized by the same dehydrogenases. Light causes one form of this vitamin to (*) isomerize from its cis form to its trans form. To combat deficiency of this vitamin in third world countries, scientists created "golden rice." A derivative of this molecule binds to light-sensitive membrane proteins called opsins. For 10 points, name this fat-soluble vitamin derived from beta-carotene that supports vision.
Deficiency of this vitamin can lead to a buildup of keratin called Bitot's spots.
vitamin A [or retinol; or retinal; or retinoic acid; accept beta-carotene until read]