What is the key function of Vitamin A in gene expression?

Question

Quizplus · Accepted Answer

Vitamin A is used in the form of retinoic acid, which functions as a ligand for nuclear receptors. Retinoic acid must bind to a protein receptor and then the retinoic acid-protein receptor is able to bind to a regulatory region of DNA, such as a promoter or enhancer, in order to initiate gene expression. This binding can either activate or repress transcription. Therefore, the key function of Vitamin A in gene expression is to regulate transcription by binding to nuclear receptors and controlling their activity.

What Is the Key Function of Vitamin a in Gene