Acetylcholine receptors Images
Go to article Acetylcholine receptors
nicotinic acetylcholine receptor: receptor and ion channel are part of the same protein complex. this is embedded in the cell membrane and consists of 5 subunits that enclose a central pore (ion channel). the binding sites for the endogenous agonist (here acetylcholine) are found extracellularly on one of the channel units. the nicotinic acetylcholine receptor increases the conductivity for Na+ and K+ ions.