A neurotransmitter that binds to nicotinic and muscarinic AChRs; mediates motor function at the neuromuscular junction; has functions in the parasympathetic and sympathetic nervous systems; involved in learning and memory through actions at nicotinic AChRs in the CNS; inhibits p53 mutant peptide aggregation at micromolar concentrations; dose-dependently increases alveolar fluid clearance and enhances Na+/K+-ATPase activity in a mouse model of pulmonary edema