Acetylcholine receptors (muscarinic)

Overview

Muscarinic acetylcholine receptors (mAChRs) are activated by the endogenous agonist acetylcholine. All five (M1-M5) mAChRs are ubiquitously expressed in the human body and are therefore attractive targets for many disorders. Functionally, M1, M3, and M5 mAChRs preferentially couple to Gq/11 proteins, whilst M2 and M4 mAChRs predominantly couple to Gi/o proteins. Both agonists and antagonists of mAChRs are clinically approved drugs, including pilocarpine for the treatment of elevated intra-ocular pressure and glaucoma, and atropine for the treatment of bradycardia and poisoning by muscarinic agents such as organophosphates.
Excerpt from IUPHAR/BPS Guide to Pharmacology
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Human
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Assay modes:
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Human non-orphan GPCRs
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Reference agonist:
carbachol
EC50:
310 nM
Human
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Assay modes:
Agonist
Inverse agonist
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Panels:
Human non-orphan GPCRs
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Safety Premium
Immunology/Infection
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Reference agonist:
carbachol
EC50:
110 nM
Human
Available
Assay modes:
Agonist
Inverse agonist
Antagonist
PAM
NAM
Panels:
Human non-orphan GPCRs
Safety
Safety Premium
Immunology/Infection
Hematology
Endocrinology/Metabolism
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Reference agonist:
carbachol
EC50:
31 nM
Human
Available
Assay modes:
Agonist
Inverse agonist
Antagonist
PAM
NAM
Panels:
Human non-orphan GPCRs
Safety Premium
Psychiatry
Neurology
à la carte
Reference agonist:
carbachol
EC50:
47 nM
Human
Available
Assay modes:
Agonist
Inverse agonist
Antagonist
PAM
NAM
Panels:
Human non-orphan GPCRs
Safety Premium
Psychiatry
à la carte
Reference agonist:
carbachol
EC50:
5.9 nM
Mouse
Available
Assay modes:
Agonist
Inverse agonist
Antagonist
PAM
NAM
Panels:
Mouse non-orphan GPCRs
à la carte
Reference agonist:
carbachol
EC50:
200 nM
Mouse
Available
Assay modes:
Agonist
Inverse agonist
Antagonist
PAM
NAM
Panels:
Mouse non-orphan GPCRs
à la carte
Reference agonist:
carbachol
EC50:
43 nM
Mouse
Available
Assay modes:
Agonist
Inverse agonist
Antagonist
PAM
NAM
Panels:
Mouse non-orphan GPCRs
à la carte
Reference agonist:
carbachol
EC50:
34 nM
Mouse
Available
Assay modes:
Agonist
Inverse agonist
Antagonist
PAM
NAM
Panels:
Mouse non-orphan GPCRs
à la carte
Reference agonist:
carbachol
EC50:
140 nM
Mouse
Available
Assay modes:
Agonist
Inverse agonist
Antagonist
PAM
NAM
Panels:
Mouse non-orphan GPCRs
à la carte
Reference agonist:
carbachol
EC50:
18 nM