participates in G protein-coupled receptor signaling pathway, coupled to cyclic nucleotide second messenger adenylate cyclase-activating dopamine receptor signaling pathway negative regulation of adenylate cyclase activity phospholipase C-activating G protein-coupled receptor signaling pathway positive regulation of cytosolic calcium ion concentration chemical synaptic transmission locomotory behavior negative regulation of cell population proliferation response to radiation wound healing response to cocaine eating behavior positive regulation of nitric oxide biosynthetic process behavioral response to ethanol negative regulation of cytosolic calcium ion concentration positive regulation of ERK1 and ERK2 cascade mu-type opioid receptor Homo sapiens protein mu-type opioid receptor (human) OPRM1 hMOP MOR1 PR:P35372 DTO:02100470 MOP (human) MOR-1 (human) Reactome:R-HSA-60951 Category=organism-gene. hOPRM1 protein mu opioid receptor (human) UniProtKB:P35372 M-OR-1 (human) mu opiate receptor (human) A mu-type opioid receptor that is encoded in the genome of human.