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Target Snapshot

CHEMBL320 Target Snapshot

Muscarinic acetylcholine receptor M3 · SINGLE PROTEIN · Rattus norvegicus

436Compounds
183Assays
12Approved Drugs
474.0Activities
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Broader Open DB context

Frame the target before identity details

Structured disease, protein, and project context should read before the lower-level identity rail.

As of 2026-09-13

Protein identity stays anchored to UniProt P08483. Use UniProt P08483 as the stable identity anchor, then attach disease evidence before program review.

Review focus
Protein anchor ready

Use UniProt P08483 as the stable identity anchor, then attach disease evidence before program review.

ChEMBL component mapping + Open Targets-ready proxy + ChEMBL 36 via Core Engine 2026-09-13
Open source guide
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 CHEMBL320, mapped to UniProt P08483. Disease framing currently uses the Open Targets-ready proxy contract.

Review anchor
Muscarinic acetylcholine receptor M3
SINGLE PROTEIN · Rattus norvegicus
As of 2026-09-13
ChEMBL target ID
CHEMBL320
Primary anchor for compounds, assays, approvals, and exports
ChEMBL 36 via Core Engine As of 2026-09-13
www.ebi.ac.uk
UniProt accession
P08483
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 P08483 as the stable mapping.

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Disease Relevance & Evidence Level
ChEMBL drug mechanism + indication proxy

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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 AccessionP08483
Component TypeProtein
Sequence Length589 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 P08483. Sequence length is 589 aa.

Mapped IDP08483
Review nameMuscarinic acetylcholine receptor M3
OrganismRattus norvegicus
Clinical Profile

Clinical Phase Distribution

12
Approved
4
Phase II
Assay Mix

Activity Type Distribution

IC50114.0
KI295.0
EC5053.0
KD12.0
Lead Set

Top Inhibitors (by pChEMBL)

ChEMBL IDpChEMBLTypeValue (nM)Phase
CHEMBL3298595 10.7 Ki 0.02 Preclinical
CHEMBL3298599 10.31 Ki 0.049 Preclinical
CHEMBL376897 10.3 EC50 0.05 Approved
CHEMBL3298588 10.25 Ki 0.056 Preclinical
CHEMBL3298596 10.19 Ki 0.064 Preclinical
CHEMBL320611 10.01 Ki 0.0986 Preclinical
CHEMBL3298600 10.0 Ki 0.1 Preclinical
CHEMBL3298763 9.92 Ki 0.12 Preclinical
CHEMBL517712 9.92 Ki 0.12 Approved
CHEMBL3298333 9.92 Ki 0.12 Preclinical
Distribution

pChEMBL Value Distribution

54
5.0
38
5.5
39
6.0
42
6.5
30
7.0
28
7.5
27
8.0
17
8.5
15
9.0
14
9.5
pChEMBL
Approved Drugs

Approved Drugs

TIOTROPIUM BROMIDE
CHEMBL3545181
Approved 2004
DARIFENACIN
CHEMBL1346
Approved 2004
SOLIFENACIN
CHEMBL1734
Approved 2004
TOLTERODINE
CHEMBL1382
Approved 1998
METHACHOLINE
CHEMBL978
Approved 1986
SCOPOLAMINE
CHEMBL569713
Approved 1979
OXYBUTYNIN
CHEMBL1231
Approved 1975
CARBACHOL
CHEMBL14
Approved 1972
ATROPINE
CHEMBL517712
Approved 1960
METHSCOPOLAMINE
CHEMBL376897
Approved 1953
Assay Landscape

Assay Landscape

184
Total Assays
249
Tested Compounds
2
Assay Types
Binding — 119 assays, 249 compounds
BAO Format Assays Compounds Avg pChEMBL
cell-based format 53 41 6.0
single protein format 40 94 7.3
tissue-based format 12 51 7.3
assay format 11 59 6.0
cell membrane format 3 4 5.2
Functional — 65 assays, 19 compounds
BAO Format Assays Compounds Avg pChEMBL
cell-based format 58 9 6.6
assay format 3 2 8.1
single protein format 2 0
tissue-based format 2 8 8.2

Confidence Score Distribution

Source · ChEMBL 36 via Core Engine