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Target Snapshot

CHEMBL5645 Target Snapshot

Cysteinyl leukotriene receptor 1 · SINGLE PROTEIN · Cavia porcellus

599Compounds
121Assays
6Approved Drugs
584.0Activities
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 Q2NNR5. Use UniProt Q2NNR5 as the stable identity anchor, then attach disease evidence before program review.

Review focus
Protein anchor ready

Use UniProt Q2NNR5 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 Cysteinyl leukotriene receptor 1 as ChEMBL target CHEMBL5645, mapped to UniProt Q2NNR5. Disease framing currently uses the Open Targets-ready proxy contract.

Review anchor
Cysteinyl leukotriene receptor 1
SINGLE PROTEIN · Cavia porcellus
As of 2026-09-13
ChEMBL target ID
CHEMBL5645
Primary anchor for compounds, assays, approvals, and exports
ChEMBL 36 via Core Engine As of 2026-09-13
www.ebi.ac.uk
UniProt accession
Q2NNR5
Cysteinyl leukotriene receptor 1
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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UniProt Target Context
UniProt accession via ChEMBL component mapping

Start here when your first question is whether Cysteinyl leukotriene receptor 1 is the right protein anchor across sources, using UniProt Q2NNR5 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 LabelCysteinyl leukotriene receptor 1
UniProt AccessionQ2NNR5
Component TypeProtein
Sequence Length340 aa

Cysteinyl leukotriene receptor 1

Source · UniProt accession via ChEMBL component mapping
Review Cue

How to read this target

Review this target as Cysteinyl leukotriene receptor 1, mapped to UniProt Q2NNR5. Sequence length is 340 aa.

Mapped IDQ2NNR5
Review nameCysteinyl leukotriene receptor 1
OrganismCavia porcellus
Clinical Profile

Clinical Phase Distribution

6
Approved
7
Phase II
Assay Mix

Activity Type Distribution

IC50225.0
KI321.0
KD38.0
Lead Set

Top Inhibitors (by pChEMBL)

ChEMBL IDpChEMBLTypeValue (nM)Phase
CHEMBL21333 10.36 IC50 0.044 Approved
CHEMBL47430 10.0 Ki 0.1 Preclinical
CHEMBL46663 9.92 Ki 0.12 Preclinical
CHEMBL275357 9.7 IC50 0.2 Preclinical
CHEMBL330649 9.7 IC50 0.2 Preclinical
CHEMBL15177 9.7 Ki 0.2 Preclinical
CHEMBL99775 9.52 IC50 0.3 Preclinical
CHEMBL95234 9.52 IC50 0.3 Preclinical
CHEMBL124095 9.52 IC50 0.3 Preclinical
CHEMBL603 9.52 Ki 0.3 Approved
Distribution

pChEMBL Value Distribution

20
5.0
27
5.5
28
6.0
42
6.5
58
7.0
74
7.5
107
8.0
92
8.5
89
9.0
17
9.5
pChEMBL
Approved Drugs

Approved Drugs

MONTELUKAST
CHEMBL787
Approved 1998
ZAFIRLUKAST
CHEMBL603
Approved 1996
PRANLUKAST
CHEMBL21333
Approved 1995
Assay Landscape

Assay Landscape

121
Total Assays
484
Tested Compounds
2
Assay Types
Binding — 96 assays, 484 compounds
BAO Format Assays Compounds Avg pChEMBL
tissue-based format 35 239 8.1
single protein format 26 89 7.6
cell membrane format 24 147 7.7
assay format 9 9 6.4
organism-based format 2 0
Functional — 25 assays, 24 compounds
BAO Format Assays Compounds Avg pChEMBL
tissue-based format 18 18 8.3
assay format 5 0
cell-based format 1 6 8.5
organism-based format 1 0

Confidence Score Distribution

Source · ChEMBL 36 via Core Engine