nicotinic acetylcholine receptor

Nicotinic acetylcholine receptors, or nAChRs, are ionotropic receptors that form ligand gated ion channels in cells' plasma membranes. Like the other type of acetylcholine receptors, muscarinic acetylcholine receptors (mAChRs), their opening is triggered by the neurotransmitter acetylcholine (ACh), but they are also opened by nicotine. Also in contrast to muscarinic ACh receptors, nicotinic receptors do not operate with a second messenger, but open themselves forming an ion channel. Their action is inhibited by curare.
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Nicotinic /nic·o·tin·ic/ denoting the effect of nicotine and other drugs in initially stimulating and subsequently, in high doses, inhibiting neural [more]Nicotinic acetylcholine receptor - Community and Resources