part_of part of part of has primary input G protein-coupled receptor activity G protein-coupled acetylcholine receptor signaling pathway G protein-coupled amine receptor activity acetylcholine receptor activity G protein-coupled acetylcholine receptor activity molecular_function G-protein coupled acetylcholine receptor activity acetylcholine receptor activity, G-protein coupled metabotropic acetylcholine receptor activity GO:0016907 Reactome:R-HSA-400012 muscarinic acetylcholine receptor activity Combining with acetylcholine and transmitting the signal across the membrane by activating an associated G-protein; promotes the exchange of GDP for GTP on the alpha subunit of a heterotrimeric G-protein complex. G protein coupled acetylcholine receptor activity G protein-coupled neurotransmitter receptor activity