Several carotenoids can be converted into this fat-soluble vitamin, whose metabolite retinal is necessary for scotopic vision.
Two different receptors for this vitamin can dimerize or homodimerize to bind DNA and regulate gene transcription, and one symptom of its deficiency is xerophthalmia. Bitot's spots are another symptom of deficiency of this vitamin, which is sometimes administered alongside vaccines because of its role in bolstering lymphocyte activity. This vitamin is key in the synthesis of (*) rhodopsin. Several carotenoids can be converted into this fat-soluble vitamin, whose metabolite retinal is necessary for scotopic vision. For 10 points, name this vitamin found in foods like liver and carrots whose deficiency causes night blindness.
Two different receptors for this vitamin can dimerize or homodimerize to bind DNA and regulate gene transcription, and one symptom of its deficiency is xerophthalmia.
vitamin {A}