Use UniProt P03438 as the stable identity anchor, then attach disease evidence before program review.
CHEMBL4918 Target Snapshot
Hemagglutinin · SINGLE PROTEIN · Influenza A virus (strain A/X-31 H3N2)
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As of 2026-09-14Protein identity stays anchored to UniProt P03438. Use UniProt P03438 as the stable identity anchor, then attach disease evidence before program review.
Hemagglutinin
Review this target as Hemagglutinin, mapped to UniProt P03438. Sequence length is 566 aa.
Protein source · UniProt accession via ChEMBL component mappingCross-source identity
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This review treats Hemagglutinin as ChEMBL target CHEMBL4918, mapped to UniProt P03438. Disease framing currently uses the Open Targets-ready proxy contract.
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Start here when your first question is whether Hemagglutinin is the right protein anchor across sources, using UniProt P03438 as the stable mapping.
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Open Review-ready CardBasic Information
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| Preferred Name | Hemagglutinin |
| Target Type | SINGLE PROTEIN |
| Organism | Influenza A virus (strain A/X-31 H3N2) |
| UniProt | P03438 |
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UniProt Target Context
Reviewable protein naming and mapping context for this target snapshot.
| Protein Label | Hemagglutinin |
| UniProt Accession | P03438 |
| Component Type | Protein |
| Sequence Length | 566 aa |
Hemagglutinin
How to read this target
Review this target as Hemagglutinin, mapped to UniProt P03438. Sequence length is 566 aa.
Activity Type Distribution
Top Inhibitors (by pChEMBL)
| ChEMBL ID | pChEMBL | Type | Value (nM) | Phase |
|---|---|---|---|---|
| CHEMBL2207987 | 5.58 | IC50 | 2600.0 | Preclinical |
| CHEMBL2207978 | 5.43 | IC50 | 3700.0 | Preclinical |
pChEMBL Value Distribution
Assay Landscape
Binding — 1 assays, 2 compounds
| BAO Format | Assays | Compounds | Avg pChEMBL |
|---|---|---|---|
| cell-based format | 1 | 2 | 5.5 |
Functional — 1 assays, 0 compounds
| BAO Format | Assays | Compounds | Avg pChEMBL |
|---|---|---|---|
| assay format | 1 | 0 | — |