Start with duodenal ulcer, then reuse UniProt P0DJD9 as the stable protein anchor across project notes and exports.
CHEMBL3295 Target Snapshot
Pepsin A · SINGLE PROTEIN · Homo sapiens
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As of 2026-09-14Pepsin A shows approved-linked disease relevance led by duodenal ulcer. 5 more disease programs remain visible in the same review block. 1 linked drug keeps the current disease frame grounded. Protein identity stays anchored to UniProt P0DJD9. Start with duodenal ulcer, then reuse UniProt P0DJD9 as the stable protein anchor across project notes and exports.
Pepsin A shows approved-linked disease relevance led by duodenal ulcer. 5 more disease programs remain visible in the same review block. 1 linked drug remains visible in the same block.
Start review with duodenal ulcer because it currently carries approved-linked support. Linked drugs include SUCRALFATE. This disease block keeps the Open Targets-ready contract explicit while current evidence comes from ChEMBL mechanism and indication mappings.
Disease source · ChEMBL drug mechanism + indication proxyPepsin A-5
Review this target as Pepsin A, mapped to UniProt P0DJD9. ChEMBL maps the protein component as Pepsin A-5. Sequence length is 388 aa.
Protein source · UniProt accession via ChEMBL component mappingCross-source identity
Keep the review anchor, source IDs, and context contract aligned before reusing this target elsewhere.
This review treats Pepsin A as ChEMBL target CHEMBL3295, mapped to UniProt P0DJD9. Disease framing currently uses the Open Targets-ready proxy contract.
Reuse the same identifiers in notes, watch rules, exports, and review packs so provenance stays stable across surfaces.
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Start here when your first question is whether Pepsin A is the right protein anchor across sources, using UniProt P0DJD9 as the stable mapping.
Jump to Protein ContextUse this block first when you need to confirm why duodenal ulcer is currently framed as approved-linked support. It currently carries 1 linked drug in the same disease frame.
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Open Review-ready CardBasic Information
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| Preferred Name | Pepsin A |
| Target Type | SINGLE PROTEIN |
| Organism | Homo sapiens |
| UniProt | P0DJD9 |
Next Actions
UniProt Target Context
Reviewable protein naming and mapping context for this target snapshot.
| Protein Label | Pepsin A-5 |
| UniProt Accession | P0DJD9 |
| Component Type | Protein |
| Sequence Length | 388 aa |
Pepsin A-5
How to read this target
Review this target as Pepsin A, mapped to UniProt P0DJD9. ChEMBL maps the protein component as Pepsin A-5. Sequence length is 388 aa.
Disease Relevance & Evidence Level
Open Targets-ready disease context using the current target-indication evidence contract.
Pepsin A shows approved-linked disease relevance led by duodenal ulcer. 5 more disease programs remain visible in the same review block.
How to read disease relevance
Start review with duodenal ulcer because it currently carries approved-linked support. Linked drugs include SUCRALFATE. This disease block keeps the Open Targets-ready contract explicit while current evidence comes from ChEMBL mechanism and indication mappings.
Clinical Phase Distribution
Activity Type Distribution
Top Inhibitors (by pChEMBL)
| ChEMBL ID | pChEMBL | Type | Value (nM) | Phase |
|---|---|---|---|---|
| CHEMBL3143435 | 10.0 | Ki | 0.1 | Preclinical |
| CHEMBL3143437 | 8.82 | Ki | 1.5 | Preclinical |
| CHEMBL154795 | 8.38 | IC50 | 4.2 | Preclinical |
| CHEMBL287423 | 7.96 | Ki | 11.0 | Preclinical |
| CHEMBL62380 | 7.89 | Ki | 13.0 | Preclinical |
| CHEMBL87025 | 7.8 | Ki | 16.0 | Preclinical |
| CHEMBL88415 | 7.62 | Ki | 24.0 | Preclinical |
| CHEMBL313773 | 7.57 | Ki | 27.0 | Preclinical |
| CHEMBL84970 | 7.24 | Ki | 57.0 | Preclinical |
| CHEMBL296588 | 7.23 | IC50 | 59.0 | Clinical |
pChEMBL Value Distribution
Assay Landscape
Binding — 21 assays, 31 compounds
| BAO Format | Assays | Compounds | Avg pChEMBL |
|---|---|---|---|
| single protein format | 20 | 31 | 6.6 |
| assay format | 1 | 0 | — |
Functional — 2 assays, 0 compounds
| BAO Format | Assays | Compounds | Avg pChEMBL |
|---|---|---|---|
| assay format | 2 | 0 | — |