Question

There are many pharmacodynamic signaling mechanisms for medications. Which signaling mechanism best describes the action of a drug which involves a coupling protein that in turn activates a separate effector molecule in the cell? Select one: a. G-protein receptors b. tyrosine kinase receptors c. JAK-STAT receptors d. steroid intracellular receptors e. transmembrane ion channels

Answer 1

Answer : G protein receptors

G protein receptors signaling mechanism best describes the action of drug which involves a coupling protein that in turn activates a separate effector molecule in the cell.

G protein coupled receptors also known seven transmembrane domain receptors ,7TM receptors ,heptahelical receptors ,serpentine receptor and G protein linked receptors constitute a large protein family of receptors that detect molecules outside the cell and. Activate internal signal transduction pathways and ultimately cellular responses .

Coupling with G protein they are called seven transmembrane receptors because they pass through the cell membrane seven times