Question

What is correct regarding iodothyronines?

• A. They act both as hormones neurotransmitters
• B. They are derivatives of tryptophan amino acid
• C. They interact with intracellular receptors
• D. They are peptides

Answer 1

The correct option is C They interact with intracellular receptors

• Hormones which interact with $\text{intracellular receptors}$ (e.g., steroid hormones, $\text{iodothyronines}$, etc.) mostly regulate gene expression or chromosome function by the interaction of hormone-receptor complex with the genome.

• It is a thyroid hormones.

• THs are iodothyronines that are derivatives of amino acid tyrosine.