Question

What are some examples of membrane receptors?

Answer 1

Three general categories of cell-surface receptors include: ion-channel, G-protein , and enzyme-linked protein receptors .

Ion channel-linked receptors bind a ligand and open a channel through the membrane that allows specific ions to pass through.

[ion channel] (https://www.youtube.com/watch?feature=player_detailpage&v=4zzedEDQ6A

G-protein-linked receptors bind a ligand and activate a membrane protein called a G-protein, which then interacts with either an ion channel or an enzyme in the membrane.

G-protein

Enzyme-linked receptors are cell-surface receptors with intracellular domains that are associated with an enzyme.

enzyme-linked