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Evidence Snapshot

Endothelin receptor type B

CHEMBL4631 SINGLE PROTEIN Rattus norvegicus
Source Header

ChEMBL 36 via Core Engine

Target Snapshot 2026-09-13T22:16:58Z
Source · ChEMBL 36 via Core Engine
ChEMBL ChEMBL 36 CHEMBL4631
Identity Layer

Cross-source identity

Keep the review anchor, source IDs, and context contract aligned before reusing this target elsewhere.

This review treats Endothelin receptor type B as ChEMBL target CHEMBL4631, mapped to UniProt P21451. Disease framing currently uses the Open Targets-ready proxy contract.

Review anchor
Endothelin receptor type B
SINGLE PROTEIN · Rattus norvegicus
As of 2026-09-13
ChEMBL target ID
CHEMBL4631
Primary anchor for compounds, assays, approvals, and exports
ChEMBL 36 via Core Engine As of 2026-09-13
www.ebi.ac.uk
UniProt accession
P21451
Endothelin receptor type B
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.

Review-ready Target Rationale

Why Endothelin receptor type B matters

As of 2026-09-13

Endothelin receptor type B is reviewed as Endothelin receptor type B (UniProt P21451); the current evidence base includes 2 approved drugs, 391 compounds, and 47 assays, with lead potency reaching pChEMBL 11.0.

Disease context
Disease signal

Disease relevance is not yet populated for this evidence card.

This disease block keeps the Open Targets-ready contract explicit while current evidence comes from ChEMBL mechanism and indication mappings.

ChEMBL target record
Activity base
Portfolio and assay base

ChEMBL currently tracks 2 approved drugs, 391 compounds, and 47 assays for this target. The dominant activity type is IC50. CHEMBL437472 is the current potency anchor at pChEMBL 11.0.

Use CHEMBL437472 as the tractability anchor when discussing potency (pChEMBL 11.0).

Activity source · ChEMBL 36 via Core Engine
2 approved pChEMBL 11.0
Source Guidance

Start with the right source

Pick the first block or linked source that matches the review question in front of you.

Need the shortest review narrative first?
Review-ready Target Rationale
One-page rationale with as-of-date and attribution

Start with the review rationale when you need to explain why Endothelin receptor type B matters before drilling into raw source blocks.

Jump to Review Rationale
Need stable protein naming or accession mapping?
UniProt Target Context
UniProt accession via ChEMBL component mapping

Go back to the target snapshot when you need the naming and mapping contract behind UniProt P21451, not just the summarized rationale.

Open Protein Context
Need disease fit or evidence level for program framing?
Disease Relevance & Evidence Level
ChEMBL drug mechanism + indication proxy

Use the target snapshot disease block when you need the disease program and supporting signals, not only the card summary.

Open Disease Context

Snapshot State

No project snapshot selected. Export uses the live evidence card state.

391
Total Compounds
47
Total Assays
2
Approved Drugs
IC50: 257.0, KI: 88.0, EC50: 7.0, KD: 19.0
Activity Types

pChEMBL Activity Distribution

Top 5 Inhibitors (by pChEMBL)

Structure Compound pChEMBL Type Phase
No preferred name
CHEMBL437472
 11.0 Ki Clinical
No preferred name
CHEMBL4524099
 10.9 Ki —
No preferred name
CHEMBL4524100
 10.8 Ki —
No preferred name
CHEMBL1790180
 10.7 Ki —
No preferred name
CHEMBL437472
 8.8 IC50 Clinical

Approved Drugs

Structure Compound First Approval
BOSENTAN
CHEMBL957
 2001
← Target Page
Source Header

ChEMBL 36 via Core Engine

Target Snapshot 2026-09-13T22:16:58Z
Source · ChEMBL 36 via Core Engine
ChEMBL ChEMBL 36 CHEMBL4631