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Target Snapshot

CHEMBL1867 Target Snapshot

Alpha-2A adrenergic receptor · SINGLE PROTEIN · Homo sapiens

4,224Compounds
606Assays
214Approved Drugs
3,286.0Activities
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 P08913. Use UniProt P08913 as the stable identity anchor, then attach disease evidence before program review.

Review focus
Protein anchor ready

Use UniProt P08913 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-2A adrenergic receptor as ChEMBL target CHEMBL1867, mapped to UniProt P08913. Disease framing currently uses the Open Targets-ready proxy contract.

Review anchor
Alpha-2A adrenergic receptor
SINGLE PROTEIN · Homo sapiens
As of 2026-09-14
ChEMBL target ID
CHEMBL1867
Primary anchor for compounds, assays, approvals, and exports
ChEMBL 36 via Core Engine As of 2026-09-14
www.ebi.ac.uk
UniProt accession
P08913
Alpha-2A adrenergic 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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Need stable target naming and protein identity?
UniProt Target Context
UniProt accession via ChEMBL component mapping

Start here when your first question is whether Alpha-2A adrenergic receptor is the right protein anchor across sources, using UniProt P08913 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 LabelAlpha-2A adrenergic receptor
UniProt AccessionP08913
Component TypeProtein
Sequence Length465 aa

Alpha-2A adrenergic receptor

Source · UniProt accession via ChEMBL component mapping
Review Cue

How to read this target

Review this target as Alpha-2A adrenergic receptor, mapped to UniProt P08913. Sequence length is 465 aa.

Mapped IDP08913
Review nameAlpha-2A adrenergic receptor
OrganismHomo sapiens
Clinical Profile

Clinical Phase Distribution

214
Approved
27
Phase III
35
Phase II
2
Phase I
Assay Mix

Activity Type Distribution

IC501,051.0
KI1,973.0
EC50252.0
KD10.0
Lead Set

Top Inhibitors (by pChEMBL)

ChEMBL IDpChEMBLTypeValue (nM)Phase
CHEMBL1256414 10.55 Ki 0.02818 Preclinical
CHEMBL4482861 10.38 Ki 0.04169 Preclinical
CHEMBL4536304 10.27 Ki 0.0537 Preclinical
CHEMBL4438801 10.18 Ki 0.06607 Preclinical
CHEMBL176261 10.0 Ki 0.1 Preclinical
CHEMBL435352 10.0 Ki 0.1 Preclinical
CHEMBL157138 9.94 Ki 0.116 Clinical
CHEMBL1255723 9.86 Ki 0.138 Preclinical
CHEMBL1256378 9.76 Ki 0.1738 Preclinical
CHEMBL180470 9.7 Ki 0.2 Preclinical
Distribution

pChEMBL Value Distribution

130
5.0
223
5.5
240
6.0
224
6.5
225
7.0
137
7.5
103
8.0
93
8.5
53
9.0
23
9.5
pChEMBL
Approved Drugs

Approved Drugs

LOFEXIDINE
CHEMBL17860
Approved 2018
BREXPIPRAZOLE
CHEMBL2105760
Approved 2015
SILODOSIN
CHEMBL24778
Approved 2008
PALIPERIDONE
CHEMBL1621
Approved 2006
ARIPIPRAZOLE
CHEMBL1112
Approved 2002
KETOTIFEN
CHEMBL534
Approved 1999
DEXMEDETOMIDINE HYDROCHLORIDE
CHEMBL2106195
Approved 1999
DEXMEDETOMIDINE
CHEMBL778
Approved 1999
QUETIAPINE
CHEMBL716
Approved 1997
PRAMIPEXOLE
CHEMBL301265
Approved 1997
TAMSULOSIN
CHEMBL836
Approved 1997
RALOXIFENE
CHEMBL81
Approved 1997
TIZANIDINE
CHEMBL1079
Approved 1996
BRIMONIDINE
CHEMBL844
Approved 1996
OLANZAPINE
CHEMBL715
Approved 1996
CABERGOLINE
CHEMBL1201087
Approved 1996
MIRTAZAPINE
CHEMBL654
Approved 1996
TIZANIDINE HYDROCHLORIDE
CHEMBL1200329
Approved 1996
CARVEDILOL
CHEMBL723
Approved 1995
RISPERIDONE
CHEMBL85
Approved 1993
CISAPRIDE
CHEMBL1729
Approved 1993
AMLODIPINE
CHEMBL1491
Approved 1992
SERTRALINE
CHEMBL809
Approved 1991
TICLOPIDINE
CHEMBL833
Approved 1991
MOXONIDINE
CHEMBL19236
Approved 1991
EBASTINE
CHEMBL305660
Approved 1990
DOXAZOSIN
CHEMBL707
Approved 1990
CLOZAPINE
CHEMBL42
Approved 1989
SELEGILINE
CHEMBL972
Approved 1989
CLOMIPRAMINE
CHEMBL415
Approved 1989
PERGOLIDE
CHEMBL531
Approved 1988
RILMENIDINE
CHEMBL289480
Approved 1987
TERCONAZOLE
CHEMBL1714574
Approved 1987
APRACLONIDINE
CHEMBL647
Approved 1987
FLUOXETINE
CHEMBL41
Approved 1987
TERAZOSIN
CHEMBL611
Approved 1987
OXYMETAZOLINE
CHEMBL762
Approved 1986
OXYMETAZOLINE HYDROCHLORIDE
CHEMBL1200791
Approved 1986
GUANFACINE HYDROCHLORIDE
CHEMBL1200494
Approved 1986
GUANFACINE
CHEMBL862
Approved 1986
AMIODARONE
CHEMBL633
Approved 1985
PENTAMIDINE
CHEMBL55
Approved 1984
MORPHINE
CHEMBL70
Approved 1984
GUANABENZ
CHEMBL420
Approved 1982
CYCLIZINE
CHEMBL648
Approved 1982
GENTIAN VIOLET
CHEMBL64894
Approved 1982
HALOPROGIN
CHEMBL1289
Approved 1982
VERAPAMIL
CHEMBL6966
Approved 1981
TRAZODONE
CHEMBL621
Approved 1981
AMOXAPINE
CHEMBL1113
Approved 1980
Assay Landscape

Assay Landscape

606
Total Assays
1,038
Tested Compounds
4
Assay Types
Binding — 463 assays, 1,038 compounds
BAO Format Assays Compounds Avg pChEMBL
single protein format 343 416 6.8
cell-based format 108 405 7.2
cell membrane format 5 118 6.4
assay format 4 22 7.1
tissue-based format 2 69 6.2
organism-based format 1 8 5.6
Functional — 124 assays, 180 compounds
BAO Format Assays Compounds Avg pChEMBL
cell-based format 92 146 7.0
assay format 29 33 7.0
tissue-based format 2 0
cell membrane format 1 1 7.8
ADME — 17 assays, 23 compounds
BAO Format Assays Compounds Avg pChEMBL
cell-based format 12 21 6.3
single protein format 5 2 5.9
Unassigned — 2 assays, 1 compounds
BAO Format Assays Compounds Avg pChEMBL
assay format 2 1 5.2

Confidence Score Distribution

Source · ChEMBL 36 via Core Engine