participates in cellular protein modification process signal transduction adenylate cyclase-inhibiting G protein-coupled acetylcholine receptor signaling pathway phospholipase C-activating G protein-coupled acetylcholine receptor signaling pathway G protein-coupled acetylcholine receptor signaling pathway synaptic transmission, cholinergic cell population proliferation positive regulation of cell population proliferation muscarinic acetylcholine receptor M1 Homo sapiens protein muscarinic acetylcholine receptor M1 (human) Reactome:R-HSA-390628 UniProtKB:P11229 A muscarinic acetylcholine receptor M1 that is encoded in the genome of human. Category=organism-gene. protein DTO:02100021 hCHRM1 CHRM1 PR:P11229