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Target Snapshot

CHEMBL3295 Target Snapshot

Pepsin A · SINGLE PROTEIN · Homo sapiens

58Compounds
23Assays
1Approved Drugs
48.0Activities
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 2026-09-14

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 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.

Review focus
Review-ready target frame

Start with duodenal ulcer, then reuse UniProt P0DJD9 as the stable protein anchor across project notes and exports.

ChEMBL component mapping + Open Targets-ready proxy + ChEMBL 36 via Core Engine 2026-09-14 1 linked drug
Open source guide
Disease program
duodenal ulcer

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 proxy
Approved-linked Open Targets-ready proxy 1 linked drug
Open disease block
Identity Layer

Cross-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.

Review anchor
Pepsin A
SINGLE PROTEIN · Homo sapiens
As of 2026-09-14
ChEMBL target ID
CHEMBL3295
Primary anchor for compounds, assays, approvals, and exports
ChEMBL 36 via Core Engine As of 2026-09-14
www.ebi.ac.uk
UniProt accession
P0DJD9
Pepsin A-5
UniProt accession via ChEMBL component mapping As of 2026-09-14
www.uniprot.org
Disease evidence contract
Open Targets-ready proxy
ChEMBL drug mechanism + indication proxy
ChEMBL drug mechanism + indication proxy As of 2026-09-14
www.ebi.ac.uk

Reuse the same identifiers in notes, watch rules, exports, and review packs so provenance stays stable across surfaces.

Source Guidance

Start with the right source

Choose the first block or source based on the question you are trying to answer.

Need stable target naming and protein identity?
UniProt Target Context
UniProt accession via ChEMBL component mapping

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 Context
Need disease fit before discussing compounds?
Disease Relevance & Evidence Level
ChEMBL drug mechanism + indication proxy

Use 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.

Jump to Disease Context
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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 LabelPepsin A-5
UniProt AccessionP0DJD9
Component TypeProtein
Sequence Length388 aa

Pepsin A-5

Source · UniProt accession via ChEMBL component mapping
Review Cue

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.

Mapped IDP0DJD9
Review namePepsin A
OrganismHomo sapiens
Disease Relevance

Disease Relevance & Evidence Level

Open Targets-ready disease context using the current target-indication evidence contract.

Approved-linked Open Targets-ready proxy

Pepsin A shows approved-linked disease relevance led by duodenal ulcer. 5 more disease programs remain visible in the same review block.

Approved-linked Approved
duodenal ulcer
1 linked drug · 1 direct · 1 efficacy
Linked drugSUCRALFATE
Approved-linked Approved
gastroesophageal reflux disease
1 linked drug · 1 direct · 1 efficacy
Linked drugSUCRALFATE
Approved-linked Approved
Peptic ulcer
1 linked drug · 1 direct · 1 efficacy
Linked drugSUCRALFATE
Clinical signal Phase II
Esophagitis
1 linked drug · 1 direct · 1 efficacy
Linked drugSUCRALFATE
Clinical signal Phase I
hemorrhage
1 linked drug · 1 direct · 1 efficacy
Linked drugSUCRALFATE
Mechanism-linked
eosinophilic esophagitis
1 linked drug · 1 direct · 1 efficacy
Linked drugSUCRALFATE
Source · ChEMBL drug mechanism + indication proxy
Review Cue

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.

Lead diseaseduodenal ulcer
Strongest levelApproved-linked
Block modeOpen Targets-ready proxy
Clinical Profile

Clinical Phase Distribution

1
Approved
1
Phase II
Assay Mix

Activity Type Distribution

IC5027.0
KI21.0
Lead Set

Top Inhibitors (by pChEMBL)

ChEMBL IDpChEMBLTypeValue (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
Distribution

pChEMBL Value Distribution

3
5.0
6
5.5
5
6.0
1
6.5
4
7.0
5
7.5
2
8.0
1
8.5
0
9.0
0
9.5
pChEMBL
Assay Landscape

Assay Landscape

23
Total Assays
31
Tested Compounds
2
Assay Types
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

Confidence Score Distribution

Source · ChEMBL 36 via Core Engine