Mu-type opioid receptor
Name | Mu-type opioid receptor |
---|---|
Synonyms | hMOP M-OR-1 MOP MOR1 Mu opiate receptor Mu opioid receptor |
Gene Name | OPRM1 |
Organism | Human |
Amino acid sequence | >lcl|BSEQ0001536|Mu-type opioid receptor MDSSAAPTNASNCTDALAYSSCSPAPSPGSWVNLSHLDGNLSDPCGPNRTDLGGRDSLCP PTGSPSMITAITIMALYSIVCVVGLFGNFLVMYVIVRYTKMKTATNIYIFNLALADALAT STLPFQSVNYLMGTWPFGTILCKIVISIDYYNMFTSIFTLCTMSVDRYIAVCHPVKALDF RTPRNAKIINVCNWILSSAIGLPVMFMATTKYRQGSIDCTLTFSHPTWYWENLLKICVFI FAFIMPVLIITVCYGLMILRLKSVRMLSGSKEKDRNLRRITRMVLVVVAVFIVCWTPIHI YVIIKALVTIPETTFQTVSWHFCIALGYTNSCLNPVLYAFLDENFKRCFREFCIPTSSNI EQQNSTRIRQNTRDHPSTANTVDRTNHQLENLEAETAPLP |
Number of residues | 400 |
Molecular Weight | 44778.855 |
Theoretical pI | 8.29 |
GO Classification |
Functions
G-protein beta-subunit binding voltage-gated calcium channel activity G-protein coupled receptor activity beta-endorphin receptor activity neuropeptide binding morphine receptor activity G-protein alpha-subunit binding Processes
adenylate cyclase-activating dopamine receptor signaling pathway positive regulation of cytosolic calcium ion concentration negative regulation of adenylate cyclase activity negative regulation of nitric oxide biosynthetic process positive regulation of ERK1 and ERK2 cascade positive regulation of neurogenesis negative regulation of cell proliferation positive regulation of cAMP-mediated signaling negative regulation of cAMP-mediated signaling phospholipase C-activating G-protein coupled receptor signaling pathway negative regulation of cytosolic calcium ion concentration cellular response to stress locomotory behavior behavioral response to ethanol neuropeptide signaling pathway G-protein coupled receptor signaling pathway, coupled to cyclic nucleotide second messenger opioid receptor signaling pathway synaptic transmission cellular response to morphine sensory perception of pain positive regulation of nitric oxide biosynthetic process sensory perception negative regulation of Wnt protein secretion adenylate cyclase-inhibiting G-protein coupled receptor signaling pathway regulation of N-methyl-D-aspartate selective glutamate receptor activity calcium ion transmembrane transport Components
cytosol integral component of plasma membrane endoplasmic reticulum plasma membrane neuron projection Golgi apparatus |
General Function | Voltage-gated calcium channel activity |
Specific Function | Receptor for endogenous opioids such as beta-endorphin and endomorphin. Receptor for natural and synthetic opioids including morphine, heroin, DAMGO, fentanyl, etorphine, buprenorphin and methadone. Agonist binding to the receptor induces coupling to an inactive GDP-bound heterotrimeric G-protein complex and subsequent exchange of GDP for GTP in the G-protein alpha subunit leading to dissociation of the G-protein complex with the free GTP-bound G-protein alpha and the G-protein beta-gamma dimer activating downstream cellular effectors. The agonist- and cell type-specific activity is predominantly coupled to pertussis toxin-sensitive G(i) and G(o) G alpha proteins, GNAI1, GNAI2, GNAI3 and GNAO1 isoforms Alpha-1 and Alpha-2, and to a lesser extend to pertussis toxin-insensitive G alpha proteins GNAZ and GNA15. They mediate an array of downstream cellular responses, including inhibition of adenylate cyclase activity and both N-type and L-type calcium channels, activation of inward rectifying potassium channels, mitogen-activated protein kinase (MAPK), phospholipase C (PLC), phosphoinositide/protein kinase (PKC), phosphoinositide 3-kinase (PI3K) and regulation of NF-kappa-B. Also couples to adenylate cyclase stimulatory G alpha proteins. The selective temporal coupling to G-proteins and subsequent signaling can be regulated by RGSZ proteins, such as RGS9, RGS17 and RGS4. Phosphorylation by members of the GPRK subfamily of Ser/Thr protein kinases and association with beta-arrestins is involved in short-term receptor desensitization. Beta-arrestins associate with the GPRK-phosphorylated receptor and uncouple it from the G-protein thus terminating signal transduction. The phosphorylated receptor is internalized through endocytosis via clathrin-coated pits which involves beta-arrestins. The activation of the ERK pathway occurs either in a G-protein-dependent or a beta-arrestin-dependent manner and is regulated by agonist-specific receptor phosphorylation. Acts as a class A G-protein coupled receptor (GPCR) which dissociates from beta-arrestin at or near the plasma membrane and undergoes rapid recycling. Receptor down-regulation pathways are varying with the agonist and occur dependent or independent of G-protein coupling. Endogenous ligands induce rapid desensitization, endocytosis and recycling whereas morphine induces only low desensitization and endocytosis. Heterooligomerization with other GPCRs can modulate agonist binding, signaling and trafficking properties. Involved in neurogenesis. Isoform 12 couples to GNAS and is proposed to be involved in excitatory effects. Isoform 16 and isoform 17 do not bind agonists but may act through oligomerization with binding-competent OPRM1 isoforms and reduce their ligand binding activity. |
Transmembrane Regions | 69-93 107-131 143-165 186-207 231-255 284-307 315-338 |
GenBank Protein ID | 452073 |
UniProtKB ID | P35372 |
UniProtKB Entry Name | OPRM_HUMAN |
Cellular Location | Cell membrane |
Gene sequence | >lcl|BSEQ0021649|Mu-type opioid receptor (OPRM1) ATGGACAGCAGCGCTGCCCCCACGAACGCCAGCAATTGCACTGATGCCTTGGCGTACTCA AGTTGCTCCCCAGCACCCAGCCCCGGTTCCTGGGTCAACTTGTCCCACTTAGATGGCAAC CTGTCCGACCCATGCGGTCCGAACCGCACCGACCTGGGCGGGAGAGACAGCCTGTGCCCT CCGACCGGCAGTCCCTCCATGATCACGGCCATCACGATCATGGCCCTCTACTCCATCGTG TGCGTGGTGGGGCTCTTCGGAAACTTCCTGGTCATGTATGTGATTGTCAGATACACCAAG ATGAAGACTGCCACCAACATCTACATTTTCAACCTTGCTCTGGCAGATGCCTTAGCCACC AGTACCCTGCCCTTCCAGAGTGTGAATTACCTAATGGGAACATGGCCATTTGGAACCATC CTTTGCAAGATAGTGATCTCCATAGATTACTATAACATGTTCACCAGCATATTCACCCTC TGCACCATGAGTGTTGATCGATACATTGCAGTCTGCCACCCTGTCAAGGCCTTAGATTTC CGTACTCCCCGAAATGCCAAAATTATCAATGTCTGCAACTGGATCCTCTCTTCAGCCATT GGTCTTCCTGTAATGTTCATGGCTACAACAAAATACAGGCAAGGTTCCATAGATTGTACA CTAACATTCTCTCATCCAACCTGGTACTGGGAAAACCTGCTGAAGATCTGTGTTTTCATC TTCGCCTTCATTATGCCAGTGCTCATCATTACCGTGTGCTATGGACTGATGATCTTGCGC CTCAAGAGTGTCCGCATGCTCTCTGGCTCCAAAGAAAAGGACAGGAATCTTCGAAGGATC ACCAGGATGGTGCTGGTGGTGGTGGCTGTGTTCATCGTCTGCTGGACTCCCATTCACATT TACGTCATCATTAAAGCCTTGGTTACAATCCCAGAAACTACGTTCCAGACTGTTTCTTGG CACTTCTGCATTGCTCTAGGTTACACAAACAGCTGCCTCAACCCAGTCCTTTATGCATTT CTGGATGAAAACTTCAAACGATGCTTCAGAGAGTTCTGTATCCCAACCTCTTCCAACATT GAGCAACAAAACTCCACTCGAATTCGTCAGAACACTAGAGACCACCCCTCCACGGCCAAT ACAGTGGATAGAACTAATCATCAGCTAGAAAATCTGGAAGCAGAAACTGCTCCGTTGCCC TAA |
GenBank Gene ID | L25119 |
GeneCard ID | None |
GenAtlas ID | OPRM1 |
HGNC ID | HGNC:8156 |
Chromosome Location | 6 |
Locus | 6q24-q25 |
References |
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