Source:http://linkedlifedata.com/resource/umls/id/C1705014
NCI: Human CHRM1 wild-type allele is located within 11q13 and is approximately 13 kb in length. This allele, which encodes muscarinic acetylcholine receptor M1 protein, plays a role in the mediation of bronchoconstriction and in gastrointestinal acid secretion.