Muscarinic acetylcholine receptor M1

Source: Wikipedia, the free encyclopedia.


CHRM1
Gene ontology
Molecular function
Cellular component
Biological process
Sources:Amigo / QuickGO
Ensembl
UniProt
RefSeq (mRNA)

NM_000738

NM_001112697
NM_007698

RefSeq (protein)

NP_000729

NP_001106167
NP_031724

Location (UCSC)Chr 11: 62.91 – 62.92 MbChr 19: 8.64 – 8.66 Mb
PubMed search[3][4]
Wikidata
View/Edit HumanView/Edit Mouse

The muscarinic acetylcholine receptor M1, also known as the cholinergic receptor, muscarinic 1, is a

muscarinic receptor that in humans is encoded by the CHRM1 gene.[5] It is localized to 11q13.[5]

This receptor is found mediating slow EPSP at the ganglion in the postganglionic nerve,[6] is common in exocrine glands and in the CNS.[7][8]

It is predominantly found bound to G proteins of class Gq[9][10] that use upregulation of phospholipase C and, therefore, inositol trisphosphate and intracellular calcium as a signalling pathway. A receptor so bound would not be susceptible to CTX or PTX. However, Gi (causing a downstream decrease in cAMP) and Gs (causing an increase in cAMP) have also been shown to be involved in interactions in certain tissues, and so would be susceptible to PTX and CTX respectively.

Effects

Occurrence in free living amoebae

A structural but not sequential

homolog of the human M1 receptor has been reported in Acanthamoeba castellanii[15] and Naegleria fowleri.[16] Antagonists of human M1 receptors (e.g. atropine, diphenhydramine
) have been shown to exert anti-proliferative effects on these pathogens.

Mechanism

It couples to Gq, and, to a small extent, Gi and Gs. This results in slow EPSP and decreased K+ conductance.[12][17] It is preassembled to the Gq heterotrimer through a polybasic c-terminal domain.[9]

Ligands

Agonists

Allosteric modulators

Antagonists

See also

References

  1. ^ a b c GRCh38: Ensembl release 89: ENSG00000168539Ensembl, May 2017
  2. ^ a b c GRCm38: Ensembl release 89: ENSMUSG00000032773Ensembl, May 2017
  3. ^ "Human PubMed Reference:". National Center for Biotechnology Information, U.S. National Library of Medicine.
  4. ^ "Mouse PubMed Reference:". National Center for Biotechnology Information, U.S. National Library of Medicine.
  5. ^ a b c d "Entrez Gene: CHRM1 cholinergic receptor, muscarinic 1".
  6. ^ Messer WS (20 January 2000). "Acetylcholine". University of Toledo. Archived from the original on 14 October 2007. Retrieved 27 October 2007.
  7. .
  8. . Retrieved 27 October 2007.
  9. ^ .
  10. .
  11. . Delirium is only associated with the antagonism of post‐synaptic M1 receptors and to date other receptor subtypes have not been implicated
  12. ^ .
  13. . Delirium is only associated with the antagonism of post‐synaptic M1 receptors and to date other receptor subtypes have not been implicated
  14. .
  15. .
  16. .
  17. ]
  18. .
  19. .
  20. .
  21. ^ .
  22. ^ Clinical trial number NCT04051801 for "Multiple Ascending Dose Phase I Study of the M1 Positive Allosteric Modulator VU0467319" at ClinicalTrials.gov
  23. PMID 27382013
    .
  24. . Delirium is only associated with the antagonism of post‐synaptic M1 receptors and to date other receptor subtypes have not been implicated
  25. .
  26. ^ Edwards Pharmaceuticals, Inc., Belcher Pharmaceuticals, Inc. (May 2010). "DailyMed". U.S. National Library of Medicine. Retrieved 13 January 2013.
  27. PMID 3220113
    .

Further reading

External links

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