Use UniProt P15823 as the stable identity anchor, then attach disease evidence before program review.
CHEMBL2111476 Target Snapshot
Alpha adrenergic receptor 1A and 1B · SELECTIVITY GROUP · Rattus norvegicus
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As of 2026-09-13Protein identity stays anchored to UniProt P15823. Use UniProt P15823 as the stable identity anchor, then attach disease evidence before program review.
Alpha-1B adrenergic receptor
Review this target as Alpha adrenergic receptor 1A and 1B, mapped to UniProt P15823. ChEMBL maps the protein component as Alpha-1B adrenergic receptor. Sequence length is 515 aa.
Protein source · UniProt accession via ChEMBL component mappingCross-source identity
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This review treats Alpha adrenergic receptor 1A and 1B as ChEMBL target CHEMBL2111476, mapped to UniProt P15823. Disease framing currently uses the Open Targets-ready proxy contract.
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| Preferred Name | Alpha adrenergic receptor 1A and 1B |
| Target Type | SELECTIVITY GROUP |
| Organism | Rattus norvegicus |
| UniProt | P15823 |
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UniProt Target Context
Reviewable protein naming and mapping context for this target snapshot.
| Protein Label | Alpha-1B adrenergic receptor |
| UniProt Accession | P15823 |
| Component Type | Protein |
| Sequence Length | 515 aa |
Alpha-1B adrenergic receptor
How to read this target
Review this target as Alpha adrenergic receptor 1A and 1B, mapped to UniProt P15823. ChEMBL maps the protein component as Alpha-1B adrenergic receptor. Sequence length is 515 aa.
Clinical Phase Distribution
Activity Type Distribution
Top Inhibitors (by pChEMBL)
| ChEMBL ID | pChEMBL | Type | Value (nM) | Phase |
|---|---|---|---|---|
| CHEMBL42 | 8.4 | Ki | 4.0 | Approved |
| CHEMBL276175 | 8.0 | IC50 | 10.0 | Preclinical |
| CHEMBL69584 | 7.06 | Ki | 88.0 | Preclinical |
| CHEMBL302075 | 6.49 | Ki | 322.0 | Preclinical |
| CHEMBL302340 | 6.09 | Ki | 815.0 | Preclinical |
| CHEMBL68191 | 5.9 | Ki | 1265.0 | Preclinical |
| CHEMBL67222 | 5.7 | Ki | 2003.0 | Preclinical |
| CHEMBL305276 | 5.7 | Ki | 2003.0 | Preclinical |
| CHEMBL305061 | 5.69 | Ki | 2038.0 | Preclinical |
| CHEMBL67414 | 5.57 | Ki | 2678.0 | Preclinical |
pChEMBL Value Distribution
Approved Drugs
Assay Landscape
Binding — 6 assays, 13 compounds
| BAO Format | Assays | Compounds | Avg pChEMBL |
|---|---|---|---|
| protein format | 4 | 0 | — |
| assay format | 1 | 1 | 8.0 |
| tissue-based format | 1 | 12 | 6.1 |
Functional — 3 assays, 0 compounds
| BAO Format | Assays | Compounds | Avg pChEMBL |
|---|---|---|---|
| assay format | 3 | 0 | — |