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Target Snapshot

CHEMBL323 Target Snapshot

5-hydroxytryptamine receptor 2B · SINGLE PROTEIN · Rattus norvegicus

253Compounds
37Assays
2Approved Drugs
172.0Activities
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 P30994. Use UniProt P30994 as the stable identity anchor, then attach disease evidence before program review.

Review focus
Protein anchor ready

Use UniProt P30994 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 5-hydroxytryptamine receptor 2B as ChEMBL target CHEMBL323, mapped to UniProt P30994. Disease framing currently uses the Open Targets-ready proxy contract.

Review anchor
5-hydroxytryptamine receptor 2B
SINGLE PROTEIN · Rattus norvegicus
As of 2026-09-14
ChEMBL target ID
CHEMBL323
Primary anchor for compounds, assays, approvals, and exports
ChEMBL 36 via Core Engine As of 2026-09-14
www.ebi.ac.uk
UniProt accession
P30994
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

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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 5-hydroxytryptamine receptor 2B is the right protein anchor across sources, using UniProt P30994 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 AccessionP30994
Component TypeProtein
Sequence Length479 aa

5-hydroxytryptamine receptor 2B

Source · UniProt accession via ChEMBL component mapping
Review Cue

How to read this target

Review this target as 5-hydroxytryptamine receptor 2B, mapped to UniProt P30994. Sequence length is 479 aa.

Mapped IDP30994
Review name5-hydroxytryptamine receptor 2B
OrganismRattus norvegicus
Clinical Profile

Clinical Phase Distribution

2
Approved
2
Phase III
5
Phase II
Assay Mix

Activity Type Distribution

KI11.0
EC5019.0
KD142.0
Lead Set

Top Inhibitors (by pChEMBL)

ChEMBL IDpChEMBLTypeValue (nM)Phase
CHEMBL5270056 10.1 Ki 0.08 Preclinical
CHEMBL5277645 10.0 Ki 0.1 Preclinical
CHEMBL5279881 10.0 Ki 0.1 Preclinical
CHEMBL5280131 10.0 Ki 0.1 Preclinical
CHEMBL5284094 10.0 Ki 0.1 Preclinical
CHEMBL94644 9.7 Ki 0.2 Preclinical
CHEMBL94655 9.7 Ki 0.2 Preclinical
CHEMBL95121 9.7 Ki 0.2 Preclinical
CHEMBL96427 9.7 Ki 0.2 Preclinical
CHEMBL96480 9.7 Ki 0.2 Preclinical
Distribution

pChEMBL Value Distribution

18
5.0
19
5.5
23
6.0
34
6.5
28
7.0
13
7.5
16
8.0
4
8.5
1
9.0
5
9.5
pChEMBL
Approved Drugs

Approved Drugs

CLOZAPINE
CHEMBL42
Approved 1989
Assay Landscape

Assay Landscape

37
Total Assays
90
Tested Compounds
2
Assay Types
Binding — 20 assays, 73 compounds
BAO Format Assays Compounds Avg pChEMBL
single protein format 9 15 6.0
tissue-based format 8 35 6.8
cell membrane format 2 12 6.8
cell-based format 1 11 9.8
Functional — 17 assays, 90 compounds
BAO Format Assays Compounds Avg pChEMBL
tissue-based format 10 65 6.9
assay format 6 19 6.3
cell-based format 1 6 7.7

Confidence Score Distribution

Source · ChEMBL 36 via Core Engine