Because most receptors are membrane proteins, which of the following is usually true?
A) They lead to changes in intracellular ion concentration.
B) They open and close in response to protein signals.
C) They are only attached to one membrane surface: exterior or interior.
D) They preferentially bind with lipid or glycolipid signal molecules.
E) They change their conformation after binding with signal polypeptides.

Question

Quizplus · Accepted Answer

Membrane receptors change their conformation after binding with signal polypeptides. This conformational change is what leads to downstream signaling events, such as changes in intracellular ion concentration or the opening/closing of ion channels. Receptors are not typically attached to only one membrane surface or preferentially bind with lipid or glycolipid signal molecules.

Because Most Receptors Are Membrane Proteins, Which of the Following