Difference between hormone action in protein hormone and steroid hormone

Dear student,
Please find below the solution to the asked query

A hormone is a chemical messenger that regulates physiological processes in living organisms. It is secreted by a gland.

Mechanism of Hormone Action

  • Hormones exhibit their effects only after binding to their specific receptors located in the target tissues to form hormone-receptor complex.

  • Membrane-bound receptors: Present on the cell membrane of the target cell

  • Intracellular receptors: Present inside the target cell

  • This specific reaction leads to biochemical changes in the target tissue, and regulates its metabolism and physiological changes.

    Mechanism of action of protein hormones :

    Hormones interacting with the membrane-bound receptors (insulin, glucagon, pituitary and hypothalamic hormones) do not enter the cells, but generate secondary messengers (e.g., cyclic AMP, IP3). These secondary messengers regulate cellular metabolism.

  • Mechanism of action of steroid hormones:

  • Hormones interacting with the intracellular receptors (e.g., steroid hormones, iodothyronines) regulate gene expression by the interaction of the hormone-receptor complex with the genome.

Hope this information will clear your doubts about the mechanism of action of protein and steroid hormones.
If you have any more doubts just ask here on the forum and our experts will try to help you out as soon as possible.

  • 4
What are you looking for?