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Target Snapshot

CHEMBL3459 Target Snapshot

5-hydroxytryptamine receptor 1B · SINGLE PROTEIN · Rattus norvegicus

1,334Compounds
123Assays
71Approved Drugs
2,168.0Activities
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 2026-09-13

Protein identity stays anchored to UniProt P28564. Use UniProt P28564 as the stable identity anchor, then attach disease evidence before program review.

Review focus
Protein anchor ready

Use UniProt P28564 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 5-hydroxytryptamine receptor 1B as ChEMBL target CHEMBL3459, mapped to UniProt P28564. Disease framing currently uses the Open Targets-ready proxy contract.

Review anchor
5-hydroxytryptamine receptor 1B
SINGLE PROTEIN · Rattus norvegicus
As of 2026-09-13
ChEMBL target ID
CHEMBL3459
Primary anchor for compounds, assays, approvals, and exports
ChEMBL 36 via Core Engine As of 2026-09-13
www.ebi.ac.uk
UniProt accession
P28564
5-hydroxytryptamine receptor 1B
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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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 1B is the right protein anchor across sources, using UniProt P28564 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

Verify identity, organism, and the fastest next research jumps from the same page.

UniProt Context

UniProt Target Context

Reviewable protein naming and mapping context for this target snapshot.

Protein Label5-hydroxytryptamine receptor 1B
UniProt AccessionP28564
Component TypeProtein
Sequence Length386 aa

5-hydroxytryptamine receptor 1B

Source · UniProt accession via ChEMBL component mapping
Review Cue

How to read this target

Review this target as 5-hydroxytryptamine receptor 1B, mapped to UniProt P28564. Sequence length is 386 aa.

Mapped IDP28564
Review name5-hydroxytryptamine receptor 1B
OrganismRattus norvegicus
Clinical Profile

Clinical Phase Distribution

71
Approved
8
Phase III
18
Phase II
Assay Mix

Activity Type Distribution

IC501,093.0
KI1,073.0
EC502.0
Lead Set

Top Inhibitors (by pChEMBL)

ChEMBL IDpChEMBLTypeValue (nM)Phase
CHEMBL442 10.04 Ki 0.091 Approved
CHEMBL442 9.7 IC50 0.201 Approved
CHEMBL1732 9.42 Ki 0.384 Approved
CHEMBL147503 9.3 IC50 0.5 Preclinical
CHEMBL26379 9.1 IC50 0.8 Preclinical
CHEMBL1732 9.07 IC50 0.846 Approved
CHEMBL762 9.04 Ki 0.909 Approved
CHEMBL146735 9.03 IC50 0.93 Preclinical
CHEMBL39 8.96 Ki 1.1 Clinical
CHEMBL26378 8.92 IC50 1.2 Preclinical
Distribution

pChEMBL Value Distribution

55
5.0
68
5.5
87
6.0
59
6.5
40
7.0
36
7.5
35
8.0
19
8.5
6
9.0
1
9.5
pChEMBL
Approved Drugs

Approved Drugs

RALOXIFENE
CHEMBL81
Approved 1997
OLANZAPINE
CHEMBL715
Approved 1996
CARVEDILOL
CHEMBL723
Approved 1995
SUMATRIPTAN
CHEMBL128
Approved 1992
CLOZAPINE
CHEMBL42
Approved 1989
PERGOLIDE
CHEMBL531
Approved 1988
ASTEMIZOLE
CHEMBL296419
Approved 1988
OXYMETAZOLINE
CHEMBL762
Approved 1986
BUSPIRONE
CHEMBL49
Approved 1986
PINDOLOL
CHEMBL500
Approved 1982
TRAZODONE
CHEMBL621
Approved 1981
BROMOCRIPTINE
CHEMBL493
Approved 1978
CLEMASTINE
CHEMBL1626
Approved 1977
PROPRANOLOL
CHEMBL27
Approved 1967
METHYSERGIDE
CHEMBL1065
Approved 1962
FLUPHENAZINE
CHEMBL726
Approved 1959
ERGOTAMINE
CHEMBL442
Approved 1948
METHYLERGONOVINE
CHEMBL1201356
Approved 1946
DIHYDROERGOTAMINE
CHEMBL1732
Approved 1946
Assay Landscape

Assay Landscape

123
Total Assays
398
Tested Compounds
2
Assay Types
Binding — 122 assays, 398 compounds
BAO Format Assays Compounds Avg pChEMBL
single protein format 47 151 6.2
tissue-based format 43 126 6.4
assay format 23 64 6.5
cell membrane format 9 57 6.5
Functional — 1 assays, 1 compounds
BAO Format Assays Compounds Avg pChEMBL
assay format 1 1 7.2

Confidence Score Distribution

Source · ChEMBL 36 via Core Engine