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Target Snapshot

CHEMBL245 Target Snapshot

Muscarinic acetylcholine receptor M3 · SINGLE PROTEIN · Homo sapiens

5,882Compounds
805Assays
149Approved Drugs
5,884.0Activities
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Structured disease, protein, and project context should read before the lower-level identity rail.

As of 2026-09-13

Muscarinic acetylcholine receptor M3 shows approved-linked disease relevance led by chronic obstructive pulmonary disease. 5 more disease programs remain visible in the same review block. 13 linked drugs keep the current disease frame grounded. Protein identity stays anchored to UniProt P20309. Start with chronic obstructive pulmonary disease, then reuse UniProt P20309 as the stable protein anchor across project notes and exports.

Review focus
Review-ready target frame

Start with chronic obstructive pulmonary disease, then reuse UniProt P20309 as the stable protein anchor across project notes and exports.

ChEMBL component mapping + Open Targets-ready proxy + ChEMBL 36 via Core Engine 2026-09-13 13 linked drugs
Open source guide
Disease program
chronic obstructive pulmonary disease

Muscarinic acetylcholine receptor M3 shows approved-linked disease relevance led by chronic obstructive pulmonary disease. 5 more disease programs remain visible in the same review block. 13 linked drugs remain visible in the same block.

Start review with chronic obstructive pulmonary disease because it currently carries approved-linked support. Linked drugs include ACLIDINIUM BROMIDE, ASM-024, AZD-9164, AZD8683. This disease block keeps the Open Targets-ready contract explicit while current evidence comes from ChEMBL mechanism and indication mappings.

Disease source · ChEMBL drug mechanism + indication proxy
Approved-linked Open Targets-ready proxy 13 linked drugs
Open disease block
Identity Layer

Cross-source identity

Keep the review anchor, source IDs, and context contract aligned before reusing this target elsewhere.

This review treats Muscarinic acetylcholine receptor M3 as ChEMBL target CHEMBL245, mapped to UniProt P20309. Disease framing currently uses the Open Targets-ready proxy contract.

Review anchor
Muscarinic acetylcholine receptor M3
SINGLE PROTEIN · Homo sapiens
As of 2026-09-13
ChEMBL target ID
CHEMBL245
Primary anchor for compounds, assays, approvals, and exports
ChEMBL 36 via Core Engine As of 2026-09-13
www.ebi.ac.uk
UniProt accession
P20309
Muscarinic acetylcholine receptor M3
UniProt accession via ChEMBL component mapping As of 2026-09-13
www.uniprot.org
Disease evidence contract
Open Targets-ready proxy
ChEMBL drug mechanism + indication proxy
ChEMBL drug mechanism + indication proxy As of 2026-09-13
www.ebi.ac.uk

Reuse the same identifiers in notes, watch rules, exports, and review packs so provenance stays stable across surfaces.

Source Guidance

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UniProt Target Context
UniProt accession via ChEMBL component mapping

Start here when your first question is whether Muscarinic acetylcholine receptor M3 is the right protein anchor across sources, using UniProt P20309 as the stable mapping.

Jump to Protein Context
Need disease fit before discussing compounds?
Disease Relevance & Evidence Level
ChEMBL drug mechanism + indication proxy

Use this block first when you need to confirm why chronic obstructive pulmonary disease is currently framed as approved-linked support. It currently carries 13 linked drugs in the same disease frame.

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Evidence Card
Review-ready rationale with source-aware context

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Overview

Basic Information

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UniProt Context

UniProt Target Context

Reviewable protein naming and mapping context for this target snapshot.

Protein LabelMuscarinic acetylcholine receptor M3
UniProt AccessionP20309
Component TypeProtein
Sequence Length590 aa

Muscarinic acetylcholine receptor M3

Source · UniProt accession via ChEMBL component mapping
Review Cue

How to read this target

Review this target as Muscarinic acetylcholine receptor M3, mapped to UniProt P20309. Sequence length is 590 aa.

Mapped IDP20309
Review nameMuscarinic acetylcholine receptor M3
OrganismHomo sapiens
Disease Relevance

Disease Relevance & Evidence Level

Open Targets-ready disease context using the current target-indication evidence contract.

Approved-linked Open Targets-ready proxy

Muscarinic acetylcholine receptor M3 shows approved-linked disease relevance led by chronic obstructive pulmonary disease. 5 more disease programs remain visible in the same review block.

Approved-linked Approved
chronic obstructive pulmonary disease
13 linked drugs · 13 direct · 13 efficacy
Linked drugACLIDINIUM BROMIDE
Linked drugASM-024
Linked drugAZD-9164
Linked drugAZD8683
Approved-linked Approved
overactive bladder
10 linked drugs · 10 direct · 10 efficacy
Linked drugDARIFENACIN HYDROBROMIDE
Linked drugFESOTERODINE FUMARATE
Linked drugIMIDAFENACIN
Linked drugOXYBUTYNIN
Approved-linked Approved
asthma
7 linked drugs · 7 direct · 7 efficacy
Linked drugASM-024
Linked drugGLYCOPYRRONIUM BROMIDE
Linked drugLAS190792
Linked drugMETHACHOLINE CHLORIDE
Approved-linked Approved
urgency urinary incontinence
7 linked drugs · 7 direct · 7 efficacy
Linked drugDARIFENACIN HYDROBROMIDE
Linked drugFESOTERODINE FUMARATE
Linked drugOXYBUTYNIN
Linked drugOXYBUTYNIN CHLORIDE
Approved-linked Approved
Airway obstruction
6 linked drugs · 6 direct · 6 efficacy
Linked drugACLIDINIUM BROMIDE
Linked drugGLYCOPYRRONIUM BROMIDE
Linked drugIPRATROPIUM BROMIDE
Linked drugREVEFENACIN
Approved-linked Approved
chronic bronchitis
5 linked drugs · 5 direct · 5 efficacy
Linked drugACLIDINIUM BROMIDE
Linked drugGLYCOPYRRONIUM BROMIDE
Linked drugIPRATROPIUM BROMIDE
Linked drugTIOTROPIUM BROMIDE
Source · ChEMBL drug mechanism + indication proxy
Review Cue

How to read disease relevance

Start review with chronic obstructive pulmonary disease because it currently carries approved-linked support. Linked drugs include ACLIDINIUM BROMIDE, ASM-024, AZD-9164, AZD8683. This disease block keeps the Open Targets-ready contract explicit while current evidence comes from ChEMBL mechanism and indication mappings.

Lead diseasechronic obstructive pulmonary disease
Strongest levelApproved-linked
Block modeOpen Targets-ready proxy
Clinical Profile

Clinical Phase Distribution

149
Approved
4
Phase III
25
Phase II
2
Phase I
Assay Mix

Activity Type Distribution

IC502,024.0
KI3,486.0
EC50260.0
KD114.0
Lead Set

Top Inhibitors (by pChEMBL)

ChEMBL IDpChEMBLTypeValue (nM)Phase
CHEMBL521523 11.0 Kd 0.01 Preclinical
CHEMBL5556228 11.0 Ki 0.01 Preclinical
CHEMBL1683934 11.0 Ki 0.01 Preclinical
CHEMBL3545181 11.0 Ki 0.01 Approved
CHEMBL5527849 11.0 Ki 0.01 Preclinical
CHEMBL540396 10.9 Kd 0.01259 Preclinical
CHEMBL5527960 10.9 Ki 0.01259 Preclinical
CHEMBL2103803 10.7 Kd 0.01995 Preclinical
CHEMBL553448 10.7 Kd 0.01995 Preclinical
CHEMBL5557828 10.7 Ki 0.01995 Preclinical
Distribution

pChEMBL Value Distribution

187
5.0
259
5.5
302
6.0
250
6.5
334
7.0
302
7.5
390
8.0
278
8.5
271
9.0
405
9.5
pChEMBL
Approved Drugs

Approved Drugs

XANOMELINE
CHEMBL21536
Approved 2024
UMECLIDINIUM BROMIDE
CHEMBL523299
Approved 2013
ACLIDINIUM
CHEMBL1194325
Approved 2012
ACLIDINIUM BROMIDE
CHEMBL551466
Approved 2012
TIOTROPIUM
CHEMBL1900528
Approved 2004
SOLIFENACIN
CHEMBL1734
Approved 2004
TROSPIUM CHLORIDE
CHEMBL3084748
Approved 2004
TIOTROPIUM BROMIDE
CHEMBL3545181
Approved 2004
DARIFENACIN
CHEMBL1346
Approved 2004
SOLIFENACIN SUCCINATE
CHEMBL1200803
Approved 2004
DESLORATADINE
CHEMBL1172
Approved 2001
KETOTIFEN
CHEMBL534
Approved 1999
KETOTIFEN FUMARATE
CHEMBL1633
Approved 1999
TOLTERODINE TARTRATE
CHEMBL1722209
Approved 1998
TOLTERODINE
CHEMBL1382
Approved 1998
OLANZAPINE
CHEMBL715
Approved 1996
PAROXETINE
CHEMBL490
Approved 1992
EBASTINE
CHEMBL305660
Approved 1990
CLOZAPINE
CHEMBL42
Approved 1989
CLOMIPRAMINE
CHEMBL415
Approved 1989
ASTEMIZOLE
CHEMBL296419
Approved 1988
OXICONAZOLE
CHEMBL1262
Approved 1988
FLUOXETINE
CHEMBL41
Approved 1987
IPRATROPIUM
CHEMBL1621597
Approved 1986
AMIODARONE
CHEMBL633
Approved 1985
SULCONAZOLE
CHEMBL1221
Approved 1985
CYCLIZINE
CHEMBL648
Approved 1982
ECONAZOLE
CHEMBL808
Approved 1982
GENTIAN VIOLET
CHEMBL64894
Approved 1982
DEXCHLORPHENIRAMINE
CHEMBL1201353
Approved 1981
MAPROTILINE
CHEMBL21731
Approved 1980
AMOXAPINE
CHEMBL1113
Approved 1980
SCOPOLAMINE
CHEMBL569713
Approved 1979
SULOCTIDIL
CHEMBL404849
Approved 1979
CLEMASTINE
CHEMBL1626
Approved 1977
TAMOXIFEN
CHEMBL83
Approved 1977
OXYBUTYNIN
CHEMBL1231
Approved 1975
MICONAZOLE
CHEMBL91
Approved 1974
PERHEXILINE
CHEMBL75880
Approved 1974
ACETYLCHOLINE
CHEMBL667
Approved 1973
ACETYLCHOLINE CHLORIDE
CHEMBL1184
Approved 1973
CARBACHOL
CHEMBL14
Approved 1972
DIMENHYDRINATE
CHEMBL1200406
Approved 1972
DOXEPIN
CHEMBL1628227
Approved 1969
DIPHENIDOL
CHEMBL936
Approved 1967
NORTRIPTYLINE
CHEMBL445
Approved 1964
THIORIDAZINE
CHEMBL479
Approved 1962
GLYCOPYRRONIUM
CHEMBL1201335
Approved 1961
AMITRIPTYLINE
CHEMBL629
Approved 1961
GLYCOPYRRONIUM BROMIDE
CHEMBL1201027
Approved 1961
Assay Landscape

Assay Landscape

808
Total Assays
2,572
Tested Compounds
4
Assay Types
Binding — 604 assays, 2,572 compounds
BAO Format Assays Compounds Avg pChEMBL
single protein format 341 408 8.2
cell-based format 233 1,425 7.6
cell membrane format 14 216 7.2
assay format 13 505 8.5
tissue-based format 3 18 5.8
Functional — 188 assays, 429 compounds
BAO Format Assays Compounds Avg pChEMBL
cell-based format 138 413 7.3
assay format 46 16 6.9
single protein format 2 0
cell membrane format 1 0
organism-based format 1 0
ADME — 15 assays, 9 compounds
BAO Format Assays Compounds Avg pChEMBL
single protein format 9 9 5.9
cell-based format 6 0
Unassigned — 1 assays, 1 compounds
BAO Format Assays Compounds Avg pChEMBL
assay format 1 1 5.0

Confidence Score Distribution

Source · ChEMBL 36 via Core Engine