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Target Snapshot

CHEMBL4761 Target Snapshot

C3a anaphylatoxin chemotactic receptor · SINGLE PROTEIN · Homo sapiens

286Compounds
75Assays
1Approved Drugs
553.0Activities
Free Research Context

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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 2026-09-14

Protein identity stays anchored to UniProt Q16581. Use UniProt Q16581 as the stable identity anchor, then attach disease evidence before program review.

Review focus
Protein anchor ready

Use UniProt Q16581 as the stable identity anchor, then attach disease evidence before program review.

ChEMBL component mapping + Open Targets-ready proxy + ChEMBL 36 via Core Engine 2026-09-14
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 C3a anaphylatoxin chemotactic receptor as ChEMBL target CHEMBL4761, mapped to UniProt Q16581. Disease framing currently uses the Open Targets-ready proxy contract.

Review anchor
C3a anaphylatoxin chemotactic receptor
SINGLE PROTEIN · Homo sapiens
As of 2026-09-14
ChEMBL target ID
CHEMBL4761
Primary anchor for compounds, assays, approvals, and exports
ChEMBL 36 via Core Engine As of 2026-09-14
www.ebi.ac.uk
UniProt accession
Q16581
C3a anaphylatoxin chemotactic receptor
UniProt accession via ChEMBL component mapping As of 2026-09-14
www.uniprot.org
Disease evidence contract
Open Targets-ready proxy
ChEMBL drug mechanism + indication proxy
ChEMBL drug mechanism + indication proxy As of 2026-09-14
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 C3a anaphylatoxin chemotactic receptor is the right protein anchor across sources, using UniProt Q16581 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 LabelC3a anaphylatoxin chemotactic receptor
UniProt AccessionQ16581
Component TypeProtein
Sequence Length482 aa

C3a anaphylatoxin chemotactic receptor

Source · UniProt accession via ChEMBL component mapping
Review Cue

How to read this target

Review this target as C3a anaphylatoxin chemotactic receptor, mapped to UniProt Q16581. Sequence length is 482 aa.

Mapped IDQ16581
Review nameC3a anaphylatoxin chemotactic receptor
OrganismHomo sapiens
Clinical Profile

Clinical Phase Distribution

1
Approved
Assay Mix

Activity Type Distribution

IC50312.0
EC50239.0
KD2.0
Lead Set

Top Inhibitors (by pChEMBL)

ChEMBL IDpChEMBLTypeValue (nM)Phase
CHEMBL1170042 9.74 IC50 0.18 Preclinical
CHEMBL3342676 9.1 IC50 0.8 Preclinical
CHEMBL2064013 8.73 IC50 1.862 Preclinical
CHEMBL1170024 8.7 IC50 1.995 Preclinical
CHEMBL4470864 8.7 IC50 1.995 Preclinical
CHEMBL4445758 8.52 IC50 3.0 Preclinical
CHEMBL3342678 8.4 IC50 4.0 Preclinical
CHEMBL4559976 8.4 IC50 3.981 Preclinical
CHEMBL4576800 8.4 IC50 3.981 Preclinical
CHEMBL2064017 8.34 IC50 4.571 Preclinical
Distribution

pChEMBL Value Distribution

47
5.0
56
5.5
88
6.0
84
6.5
58
7.0
40
7.5
38
8.0
7
8.5
1
9.0
1
9.5
pChEMBL
Assay Landscape

Assay Landscape

75
Total Assays
145
Tested Compounds
3
Assay Types
Functional — 45 assays, 145 compounds
BAO Format Assays Compounds Avg pChEMBL
cell-based format 38 138 6.3
assay format 7 7 6.5
Binding — 28 assays, 133 compounds
BAO Format Assays Compounds Avg pChEMBL
cell-based format 12 85 6.5
single protein format 10 48 6.7
assay format 6 0
ADME — 2 assays, 4 compounds
BAO Format Assays Compounds Avg pChEMBL
cell-based format 2 4 6.8

Confidence Score Distribution

Source · ChEMBL 36 via Core Engine