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Target Snapshot

CHEMBL5433 Target Snapshot

Tryptophan 5-hydroxylase 2 · SINGLE PROTEIN · Homo sapiens

141Compounds
7Assays
1Approved Drugs
258.0Activities
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

Protein identity stays anchored to UniProt Q8IWU9. Use UniProt Q8IWU9 as the stable identity anchor, then attach disease evidence before program review.

Review focus
Protein anchor ready

Use UniProt Q8IWU9 as the stable identity anchor, then attach disease evidence before program review.

ChEMBL component mapping + Open Targets-ready proxy + ChEMBL 36 via Core Engine 2026-09-14
Open source guide
Identity Layer

Cross-source identity

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

This review treats Tryptophan 5-hydroxylase 2 as ChEMBL target CHEMBL5433, mapped to UniProt Q8IWU9. Disease framing currently uses the Open Targets-ready proxy contract.

Review anchor
Tryptophan 5-hydroxylase 2
SINGLE PROTEIN · Homo sapiens
As of 2026-09-14
ChEMBL target ID
CHEMBL5433
Primary anchor for compounds, assays, approvals, and exports
ChEMBL 36 via Core Engine As of 2026-09-14
www.ebi.ac.uk
UniProt accession
Q8IWU9
Tryptophan 5-hydroxylase 2
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

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UniProt Target Context
UniProt accession via ChEMBL component mapping

Start here when your first question is whether Tryptophan 5-hydroxylase 2 is the right protein anchor across sources, using UniProt Q8IWU9 as the stable mapping.

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Disease Relevance & Evidence Level
ChEMBL drug mechanism + indication proxy

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Evidence Card
Review-ready rationale with source-aware context

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Overview

Basic Information

Verify identity, organism, and the fastest next research jumps from the same page.

UniProt Context

UniProt Target Context

Reviewable protein naming and mapping context for this target snapshot.

Protein LabelTryptophan 5-hydroxylase 2
UniProt AccessionQ8IWU9
Component TypeProtein
Sequence Length490 aa

Tryptophan 5-hydroxylase 2

Source · UniProt accession via ChEMBL component mapping
Review Cue

How to read this target

Review this target as Tryptophan 5-hydroxylase 2, mapped to UniProt Q8IWU9. Sequence length is 490 aa.

Mapped IDQ8IWU9
Review nameTryptophan 5-hydroxylase 2
OrganismHomo sapiens
Clinical Profile

Clinical Phase Distribution

1
Approved
1
Phase III
1
Phase II
Assay Mix

Activity Type Distribution

IC50254.0
EC504.0
Lead Set

Top Inhibitors (by pChEMBL)

ChEMBL IDpChEMBLTypeValue (nM)Phase
CHEMBL4104957 8.15 IC50 7.0 Clinical
CHEMBL5395489 7.96 IC50 11.0 Preclinical
CHEMBL5173430 7.85 IC50 14.0 Preclinical
CHEMBL5191481 7.85 IC50 14.0 Preclinical
CHEMBL5416480 7.85 IC50 14.0 Preclinical
CHEMBL5424626 7.82 IC50 15.0 Preclinical
CHEMBL5397485 7.8 IC50 16.0 Preclinical
CHEMBL5404510 7.8 IC50 16.0 Preclinical
CHEMBL5407430 7.8 IC50 16.0 Preclinical
CHEMBL5394253 7.77 IC50 17.0 Preclinical
Distribution

pChEMBL Value Distribution

3
5.0
19
5.5
29
6.0
21
6.5
69
7.0
98
7.5
1
8.0
0
8.5
0
9.0
0
9.5
pChEMBL
Approved Drugs

Approved Drugs

TELOTRISTAT ETHYL
CHEMBL2105695
Approved 2017
Assay Landscape

Assay Landscape

7
Total Assays
201
Tested Compounds
2
Assay Types
Binding — 6 assays, 201 compounds
BAO Format Assays Compounds Avg pChEMBL
assay format 3 95 7.0
single protein format 2 102 7.2
cell-based format 1 4 6.1
ADME — 1 assays, 1 compounds
BAO Format Assays Compounds Avg pChEMBL
single protein format 1 1 8.2

Confidence Score Distribution

Source · ChEMBL 36 via Core Engine