More specialised cells use dopamine, serotonin, acetylcholine and a variety of other molecules.
Most of them prevent the breakdown of acetylcholine, a neurotransmitter.
When the command signal arrives, the nerve terminal releases a minute puff of acetylcholine, a neurotransmitter.
One obvious suspect is the receptor for the brain chemical acetylcholine, which happens to respond strongly to nicotine as well.
Those genes code for nicotinic acetylcholine receptors, cell-surface proteins that selectively bind to nicotine molecules.
Lambert-Eaton syndrome occurs when nerves cells do not release enough of a chemical called acetylcholine.
Acetylcholine is a neurotransmitter that is important for learning and memory.