MOR-1: a Gi-protein-coupled receptor for beta-endorphin, morphine and other opiates. Inhibits neurotransmitter release by reducing calcium ion currents and increasing potassium ion conductance. Ligand-binding inactivates adenylyl cyclase, and activates a variety of G-beta-gamma-dependent pathways including the MAPK and the PI3K/Akt cascades. Two splice-variant isoforms have been described.
Protein type: Receptor, GPCR; GPCR, family 1; Membrane protein, multi-pass; Membrane protein, integral
Cellular Component: cytoplasm; cytosol; dendrite; dendrite cytoplasm; focal adhesion; integral to membrane; integral to plasma membrane; lipid raft; membrane; perikaryon; sarcolemma
Molecular Function: beta-endorphin receptor activity; filamin binding; G-protein alpha-subunit binding; G-protein beta-subunit binding; G-protein coupled receptor activity; neuropeptide binding; opioid receptor activity; protein binding; protein C-terminus binding; protein domain specific binding; voltage-gated calcium channel activity
Biological Process: acute inflammatory response to antigenic stimulus; behavioral response to ethanol; dopamine receptor, adenylate cyclase activating pathway; eating behavior; elevation of cytosolic calcium ion concentration; G-protein coupled receptor protein signaling pathway; G-protein signaling, adenylate cyclase inhibiting pathway; G-protein signaling, coupled to IP3 second messenger (phospholipase C activating); immune response; locomotory behavior; negative regulation of adenylate cyclase activity; negative regulation of cAMP biosynthetic process; negative regulation of nitric oxide biosynthetic process; neuropeptide signaling pathway; opioid receptor, adenylate cyclase inhibiting pathway; positive regulation of appetite; positive regulation of neurogenesis; positive regulation of nitric oxide biosynthetic process; reduction of cytosolic calcium ion concentration; regulation of excitatory postsynaptic membrane potential; regulation of sensory perception of pain; response to cocaine; response to ethanol; response to food; response to lipopolysaccharide; response to morphine; response to radiation; sensory perception of pain; wound healing
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