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Target Snapshot

CHEMBL3988626 Target Snapshot

Alpha-1B adrenergic receptor · SINGLE PROTEIN · Cricetulus griseus

5Compounds
2Assays
5Approved Drugs
5.0Activities
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 G3HDX1. Use UniProt G3HDX1 as the stable identity anchor, then attach disease evidence before program review.

Review focus
Protein anchor ready

Use UniProt G3HDX1 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 Alpha-1B adrenergic receptor as ChEMBL target CHEMBL3988626, mapped to UniProt G3HDX1. Disease framing currently uses the Open Targets-ready proxy contract.

Review anchor
Alpha-1B adrenergic receptor
SINGLE PROTEIN · Cricetulus griseus
As of 2026-09-14
ChEMBL target ID
CHEMBL3988626
Primary anchor for compounds, assays, approvals, and exports
ChEMBL 36 via Core Engine As of 2026-09-14
www.ebi.ac.uk
UniProt accession
G3HDX1
5-hydroxytryptamine receptor 2B
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

Start with the right source

Choose the first block or source based on the question you are trying to answer.

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UniProt Target Context
UniProt accession via ChEMBL component mapping

Start here when your first question is whether Alpha-1B adrenergic receptor is the right protein anchor across sources, using UniProt G3HDX1 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 Label5-hydroxytryptamine receptor 2B
UniProt AccessionG3HDX1
Component TypeProtein
Sequence Length291 aa

5-hydroxytryptamine receptor 2B

Source · UniProt accession via ChEMBL component mapping
Review Cue

How to read this target

Review this target as Alpha-1B adrenergic receptor, mapped to UniProt G3HDX1. ChEMBL maps the protein component as 5-hydroxytryptamine receptor 2B. Sequence length is 291 aa.

Mapped IDG3HDX1
Review nameAlpha-1B adrenergic receptor
OrganismCricetulus griseus
Clinical Profile

Clinical Phase Distribution

5
Approved
Assay Mix

Activity Type Distribution

EC505.0
Lead Set

Top Inhibitors (by pChEMBL)

ChEMBL IDpChEMBLTypeValue (nM)Phase
CHEMBL1215 8.0 EC50 10.0 Approved
CHEMBL134 7.08 EC50 83.0 Approved
CHEMBL1079 6.49 EC50 322.0 Approved
CHEMBL778 6.44 EC50 364.0 Approved
CHEMBL844 6.03 EC50 943.0 Approved
Distribution

pChEMBL Value Distribution

0
5.0
0
5.5
3
6.0
0
6.5
1
7.0
0
7.5
1
8.0
0
8.5
0
9.0
0
9.5
pChEMBL
Approved Drugs

Approved Drugs

DEXMEDETOMIDINE
CHEMBL778
Approved 1999
TIZANIDINE
CHEMBL1079
Approved 1996
BRIMONIDINE
CHEMBL844
Approved 1996
CLONIDINE
CHEMBL134
Approved 1974
PHENYLEPHRINE
CHEMBL1215
Approved 1952
Assay Landscape

Assay Landscape

2
Total Assays
5
Tested Compounds
1
Assay Types
Functional — 2 assays, 5 compounds
BAO Format Assays Compounds Avg pChEMBL
cell-based format 2 5 6.8

Confidence Score Distribution

Source · ChEMBL 36 via Core Engine