Muscarinic acetylcholine receptor M5

CHRM5

Identifiers

CHRM5, HM5, cholinergic receptor muscarinic 5

External IDs

OMIM: 118496 MGI: 109248 HomoloGene: 22697 GeneCards: CHRM5

Gene location (Human)

Chr.	Chromosome 15 (human)^[1]

Band	No data available	Start	33,968,720 bp^[1]
Band	No data available	End	34,067,457 bp^[1]

Gene location (Mouse)

Chr.	Chromosome 2 (mouse)^[2]

Band	No data available	Start	112,479,171 bp^[2]
Band	No data available	End	112,480,769 bp^[2]

RNA expression pattern

More reference expression data

Gene ontology
Molecular function	• G-protein coupled receptor activity • signal transducer activity • phosphatidylinositol phospholipase C activity • G-protein coupled acetylcholine receptor activity
Cellular component	• integral component of membrane • postsynaptic membrane • membrane • plasma membrane • synapse • integral component of plasma membrane • cell junction
Biological process	• G-protein coupled acetylcholine receptor signaling pathway • regulation of phosphatidylinositol dephosphorylation • G-protein coupled receptor signaling pathway • gastric acid secretion • transmission of nerve impulse • synaptic transmission, cholinergic • adenylate cyclase-inhibiting G-protein coupled acetylcholine receptor signaling pathway • dopamine transport • phospholipase C-activating G-protein coupled acetylcholine receptor signaling pathway • cell proliferation • signal transduction
Sources:Amigo / QuickGO

Orthologs

Species

Human

Mouse

Entrez


1133


213788

Ensembl


ENSG00000184984


ENSMUSG00000074939

UniProt


P08912


Q920H4

RefSeq (mRNA)


NM_012125 NM_001320917


NM_205783

RefSeq (protein)


NP_001307846 NP_036257


NP_991352

Location (UCSC)

Chr 15: 33.97 – 34.07 Mb

Chr 15: 112.48 – 112.48 Mb

PubMed search

^[3]

^[4]

Wikidata

View/Edit Human

View/Edit Mouse

The human muscarinic acetylcholine receptor M₅, encoded by the CHRM5 gene, is a member of the G protein-coupled receptor superfamily of integral membrane proteins. It is coupled to G_q protein.^[5] Binding of the endogenous ligand acetylcholine to the M₅ receptor triggers a number of cellular responses such as adenylate cyclase inhibition, phosphoinositide degradation, and potassium channel modulation. Muscarinic receptors mediate many of the effects of acetylcholine in the central and peripheral nervous system. The clinical implications of this receptor have not been fully explored; however, stimulation of this receptor is known to effectively decrease cyclic AMP levels and downregulate the activity of protein kinase A (PKA).

Ligands

No highly selective agonists or antagonists for the M₅ receptor have been discovered as of 2009, but several non-selective muscarinic agonists and antagonists have significant affinity for M₅.

The lack of selective M5 receptor ligands is one of the main reasons that the medical community has such a limited understanding of the M5 receptors effects as the possibility that any and/or all effects of non-selective ligands may be due to interactions with other receptors can not be ruled out. Some data may be obtained by observing which effects are common among semi-selective ligands (ex. a ligand of M1 and M5, a ligand of M2 and M5, and a ligand of M3 and M5), but until both a selective agonist and a selective antagonist of the M5 receptor are developed this data must be considered merely theoretical.

Agonists

Milameline ((E)-1,2,5,6-Tetrahydro-1-methyl-3-pyridinecarboxaldehyde-O-methyloxime, CAS# 139886-32-1)
Sabcomeline

Positive allosteric modulators

ML-380^[6]
ML-326^[7]
VU-0238429: EC₅₀ = 1.16 μM; >30-fold selectivity versus M1 and M3, inactive at M2 and M4.^[8]

Negative allosteric modulators

ML375^[9]

Antagonists

VU-0488130 (ML381)^[10]
Xanomeline^[11]

References

1 2 3 GRCh38: Ensembl release 89: ENSG00000184984 - Ensembl, May 2017
1 2 3 GRCm38: Ensembl release 89: ENSMUSG00000074939 - Ensembl, May 2017
↑ "Human PubMed Reference:".
↑ "Mouse PubMed Reference:".
↑ Kou Qin; Chunmin Dong; Guangyu Wu; Nevin A Lambert (August 2011). "Inactive-state preassembly of Gq-coupled receptors and Gq heterotrimers". Nature Chemical Biology. 7 (11): 740–747. PMC 3177959 . PMID 21873996. doi:10.1038/nchembio.642.
↑ Gentry PR, Kokubo M, Bridges TM, et al. (2014). "Development of a Highly Potent, Novel M5 Positive Allosteric Modulator (PAM) Demonstrating CNS Exposure: 1-((1H-Indazol-5-yl)sulfoneyl)-N-ethyl-N-(2-(trifluoromethyl)benzyl)piperidine-4-carboxamide (ML380)". J. Med. Chem. 57: 7804–10. PMC 4175000 . PMID 25147929. doi:10.1021/jm500995y.
↑ Gentry PR, Bridges TM, Lamsal A, et al. (2013). "Discovery of ML326: The first sub-micromolar, selective M5 PAM". Bioorg. Med. Chem. Lett. 23 (10): 2996–3000. PMC 3634896 . PMID 23562060. doi:10.1016/j.bmcl.2013.03.032.
↑ Bridges TM, Marlo JE, Niswender CM, et al. (June 2009). "Discovery of the first highly M5-preferring muscarinic acetylcholine receptor ligand, an M5 positive allosteric modulator derived from a series of 5-trifluoromethoxy N-benzyl isatins". J. Med. Chem. 52 (11): 3445–8. PMID 19438238. doi:10.1021/jm900286j.
↑ Gentry PR, Kokubo M, Bridges TM, et al. (2013). "Discovery of the first M5-selective and CNS penetrant negative allosteric modulator (NAM) of a muscarinic acetylcholine receptor: (S)-9b-(4-chlorophenyl)-1-(3,4-difluorobenzoyl)-2,3-dihydro-1H-imidazo[2,1-a]isoindol-5(9bH)-one (ML375)". J. Med. Chem. 56 (22): 9351–5. PMC 3876027 . PMID 24164599. doi:10.1021/jm4013246.
↑ Gentry PR, Kokubo M, Bridges TM, et al. (2014). "Discovery, Synthesis and Characterization of a Highly Muscarinic Acetylcholine Receptor (mAChR)-Selective M5 -Orthosteric Antagonist, VU0488130 (ML381): A Novel Molecular Probe". ChemMedChem. 9 (8): 1677–82. PMC 4116439 . PMID 24692176. doi:10.1002/cmdc.201402051.
↑ Grant MK, El-Fakahany EE (October 2005). "Persistent binding and functional antagonism by xanomeline at the muscarinic M₅ receptor". J. Pharmacol. Exp. Ther. 315 (1): 313–9. PMID 16002459. doi:10.1124/jpet.105.090134.

Brann MR, Ellis J, Jørgensen H, et al. (1994). "Muscarinic acetylcholine receptor subtypes: localization and structure/function.". Prog. Brain Res. 98: 121–7. PMID 8248499. doi:10.1016/S0079-6123(08)62388-2.
Gutkind JS, Novotny EA, Brann MR, Robbins KC (1991). "Muscarinic acetylcholine receptor subtypes as agonist-dependent oncogenes.". Proc. Natl. Acad. Sci. U.S.A. 88 (11): 4703–7. PMC 51734 . PMID 1905013. doi:10.1073/pnas.88.11.4703.
Liao CF, Themmen AP, Joho R, et al. (1989). "Molecular cloning and expression of a fifth muscarinic acetylcholine receptor.". J. Biol. Chem. 264 (13): 7328–37. PMID 2540186.
Bonner TI, Young AC, Brann MR, Buckley NJ (1990). "Cloning and expression of the human and rat m5 muscarinic acetylcholine receptor genes.". Neuron. 1 (5): 403–10. PMID 3272174. doi:10.1016/0896-6273(88)90190-0.
Crespo P, Xu N, Daniotti JL, et al. (1994). "Signaling through transforming G protein-coupled receptors in NIH 3T3 cells involves c-Raf activation. Evidence for a protein kinase C-independent pathway.". J. Biol. Chem. 269 (33): 21103–9. PMID 8063729.
Haga K, Kameyama K, Haga T, et al. (1996). "Phosphorylation of human m1 muscarinic acetylcholine receptors by G protein-coupled receptor kinase 2 and protein kinase C.". J. Biol. Chem. 271 (5): 2776–82. PMID 8576254. doi:10.1074/jbc.271.5.2776.
Kohn EC, Alessandro R, Probst J, et al. (1996). "Identification and molecular characterization of a m5 muscarinic receptor in A2058 human melanoma cells. Coupling to inhibition of adenylyl cyclase and stimulation of phospholipase A2.". J. Biol. Chem. 271 (29): 17476–84. PMID 8663391. doi:10.1074/jbc.271.29.17476.
Burstein ES, Spalding TA, Brann MR (1998). "The second intracellular loop of the m5 muscarinic receptor is the switch which enables G-protein coupling.". J. Biol. Chem. 273 (38): 24322–7. PMID 9733718. doi:10.1074/jbc.273.38.24322.
Sato KZ, Fujii T, Watanabe Y, et al. (1999). "Diversity of mRNA expression for muscarinic acetylcholine receptor subtypes and neuronal nicotinic acetylcholine receptor subunits in human mononuclear leukocytes and leukemic cell lines.". Neurosci. Lett. 266 (1): 17–20. PMID 10336173. doi:10.1016/S0304-3940(99)00259-1.
Wang H, Han H, Zhang L, et al. (2001). "Expression of multiple subtypes of muscarinic receptors and cellular distribution in the human heart.". Mol. Pharmacol. 59 (5): 1029–36. PMID 11306684.
Buchli R, Ndoye A, Arredondo J, et al. (2002). "Identification and characterization of muscarinic acetylcholine receptor subtypes expressed in human skin melanocytes.". Mol. Cell. Biochem. 228 (1–2): 57–72. PMID 11855742. doi:10.1023/A:1013368509855.
Strausberg RL, Feingold EA, Grouse LH, et al. (2003). "Generation and initial analysis of more than 15,000 full-length human and mouse cDNA sequences". Proc. Natl. Acad. Sci. U.S.A. 99 (26): 16899–903. PMC 139241 . PMID 12477932. doi:10.1073/pnas.242603899.
Fujii T, Watanabe Y, Inoue T, Kawashima K (2003). "Upregulation of mRNA encoding the M5 muscarinic acetylcholine receptor in human T- and B-lymphocytes during immunological responses". Neurochem. Res. 28 (3–4): 423–9. PMID 12675126. doi:10.1023/A:1022840416292.
Ota T, Suzuki Y, Nishikawa T, et al. (2004). "Complete sequencing and characterization of 21,243 full-length human cDNAs". Nat. Genet. 36 (1): 40–5. PMID 14702039. doi:10.1038/ng1285.
De Luca V, Wang H, Squassina A, et al. (2004). "Linkage of M5 muscarinic and alpha7-nicotinic receptor genes on 15q13 to schizophrenia". Neuropsychobiology. 50 (2): 124–7. PMID 15292665. doi:10.1159/000079102.
Qu J, Zhou X, Xie R, et al. (2006). "The presence of m1 to m5 receptors in human sclera: evidence of the sclera as a potential site of action for muscarinic receptor antagonists". Curr. Eye Res. 31 (7–8): 587–97. PMID 16877267. doi:10.1080/02713680600770609.
Anney RJ, Lotfi-Miri M, Olsson CA, et al. (2007). "Variation in the gene coding for the M5 muscarinic receptor (CHRM5) influences cigarette dose but is not associated with dependence to drugs of addiction: evidence from a prospective population based cohort study of young adults". BMC Genet. 8: 46. PMC 1978498 . PMID 17608938. doi:10.1186/1471-2156-8-46.

This article incorporates text from the United States National Library of Medicine, which is in the public domain.

Cell surface receptor: G protein–coupled receptors

Class A: Rhodopsin-like

Neurotransmitter

Adrenergic	α1 (A B D) α2 (A B C) β1 β2 β3
Purinergic	Adenosine (A1 A2A A2B A3) P2Y (1 2 4 5 6 8 9 10 11 12 13 14)
Serotonin	(all but 5-HT3) 5-HT1 (A B D E F) 5-HT2 (A B C) 5-HT (4 5A 6 7)
Other	Acetylcholine (M1 M2 M3 M4 M5) Dopamine D1 D2 D3 D4 D5 GHB receptor Histamine H1 H2 H3 H4 Melatonin (1A 1B 1C) TAAR (1 2 3 5 6 8 9)

Metabolites and
signaling molecules

Eicosanoid	CysLT (1 2) LTB4 1 2 FPRL1 OXE Prostaglandin DP (1 2), EP (1 2 3 4), FP Prostacyclin Thromboxane
Other	Bile acid Cannabinoid (CB1 CB2, GPR (18 55 119)) EBI2 Estrogen Free fatty acid (1 2 3 4) Lactate Lysophosphatidic acid (1 2 3 4 5 6) Lysophospholipid (1 2 3 4 5 6 7 8) Niacin (1 2) Oxoglutarate PAF Sphingosine-1-phosphate (1 2 3 4 5) Succinate

Peptide

Neuropeptide

B/W (1
2)
FF (1
2)
S
Y (1
2
4
5)
Neuromedin (B
U (1
2))
Neurotensin (1
2)

Other

Anaphylatoxin (C3a
C5a)
Angiotensin (1
2)
Apelin
Bombesin
- BRS3
- GRPR
- NMBR)
- Bradykinin (B1
- B2)
Chemokine
Cholecystokinin (A
B)
Endothelin
- A
- B
Formyl peptide (1
2
3)
FSH
Galanin (1
2
3)
Gonadotropin-releasing hormone (1
2)
Ghrelin
Kisspeptin
Luteinizing hormone/choriogonadotropin
MAS (1
1L
D
E
F
G
X1
X2
X3
X4)
Melanocortin (1
2
3
4
5)
MCHR (1
2)
Motilin
Opioid (Delta
Kappa
Mu
Nociceptin & Zeta, but not Sigma)
Orexin (1
2)
Oxytocin
Prokineticin (1
2)
Prolactin-releasing peptide
Relaxin (1
2
3
4)
Somatostatin (1
2
3
4
5)
Tachykinin (1
2
3)
Thyrotropin
Thyrotropin-releasing hormone
Urotensin-II
Vasopressin (1A
1B
2)

Miscellaneous

Orphan	GPR (1 3 4 6 12 15 17 18 19 20 21 22 23 25 26 27 31 32 33 34 35 37 39 42 44 45 50 52 55 61 62 63 65 68 75 77 78 81 82 83 84 85 87 88 92 101 103 109A 109B 119 120 132 135 137B 139 141 142 146 148 149 150 151 152 153 160 161 162 171 173 174 176 177 182 183)
Other	Adrenomedullin Olfactory Opsin (3 4 5 1LW 1MW 1SW RGR RRH) Protease-activated (1 2 3 4) SREB (1 2 3)

Class B: Secretin-like

Adhesion	ADGRG (1 2 3 4 5 6 7)
Orphan	GPR (56 64 97 98 110 111 112 113 114 115 116 123 124 125 126 128 133 143 144 155 157)
Other	Brain-specific angiogenesis inhibitor (1 2 3) Cadherin (1 2 3) Calcitonin CALCRL CD97 Corticotropin-releasing hormone (1 2) EMR (1 2 3) Glucagon (GR GIPR GLP1R GLP2R) Growth-hormone-releasing hormone PACAPR1 GPR Latrophilin (1 2 3 ELTD1) Methuselah-like proteins Parathyroid hormone (1 2) Secretin Vasoactive intestinal peptide (1 2)

Class C: Metabotropic glutamate / pheromone

Taste	TAS1R (1 2 3) TAS2R (1 3 4 5 7 8 9 10 13 14 16 19 20 30 31 38 39 40 41 42 43 45 46 50 60 Vomeronasal receptor)
Other	Calcium-sensing receptor GABAB (1 2) Glutamate receptor (Metabotropic glutamate (1 2 3 4 5 6 7 8)) GPRC6A GPR (156 158 179) RAIG (1 2 3 4)

Class F: Frizzled / Smoothened

Frizzled	Frizzled (1 2 3 4 5 6 7 8 9 10)
Smoothened	Smoothened

This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.