Skip to main content
Free research Free research Free target review with research home and workspace preview
Quick search ChEMBL 36
Loading Target Snapshot...
Querying ChEMBL database. This may take a few seconds.
Target Snapshot

CHEMBL1850 Target Snapshot

D(1B) dopamine receptor · SINGLE PROTEIN · Homo sapiens

1,427Compounds
271Assays
22Approved Drugs
890.0Activities
Free Research Context

Research home keeps recent targets

This target will appear in recent viewed items on this browser. Use the demo workspace to preview watch rules and decision queues.

Navigation

Switch target

Move to another high-traffic target or paste a specific ChEMBL target ID.

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 2026-09-13

D(1B) dopamine receptor shows late clinical disease relevance led by Parkinson disease. 2 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 P21918. Start with Parkinson disease, then reuse UniProt P21918 as the stable protein anchor across project notes and exports.

Review focus
Review-ready target frame

Start with Parkinson disease, then reuse UniProt P21918 as the stable protein anchor across project notes and exports.

ChEMBL component mapping + Open Targets-ready proxy + ChEMBL 36 via Core Engine 2026-09-13 1 linked drug
Open source guide
Disease program
Parkinson disease

D(1B) dopamine receptor shows late clinical disease relevance led by Parkinson disease. 2 more disease programs remain visible in the same review block. 1 linked drug remains visible in the same block.

Start review with Parkinson disease because it currently carries late clinical support. Linked drugs include TAVAPADON. 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
Late clinical 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 D(1B) dopamine receptor as ChEMBL target CHEMBL1850, mapped to UniProt P21918. Disease framing currently uses the Open Targets-ready proxy contract.

Review anchor
D(1B) dopamine receptor
SINGLE PROTEIN · Homo sapiens
As of 2026-09-13
ChEMBL target ID
CHEMBL1850
Primary anchor for compounds, assays, approvals, and exports
ChEMBL 36 via Core Engine As of 2026-09-13
www.ebi.ac.uk
UniProt accession
P21918
D(1B) dopamine receptor
UniProt accession via ChEMBL component mapping As of 2026-09-13
www.uniprot.org
Disease evidence contract
Open Targets-ready proxy
ChEMBL drug mechanism + indication proxy
ChEMBL drug mechanism + indication proxy As of 2026-09-13
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 D(1B) dopamine receptor is the right protein anchor across sources, using UniProt P21918 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 Parkinson disease is currently framed as late clinical support. It currently carries 1 linked drug in the same disease frame.

Jump to Disease Context
Need a meeting-ready explanation of why this target matters?
Evidence Card
Review-ready rationale with source-aware context

Open the one-page evidence card when you want the rationale, activity base, and attribution together.

Open Review-ready Card
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 LabelD(1B) dopamine receptor
UniProt AccessionP21918
Component TypeProtein
Sequence Length477 aa

D(1B) dopamine receptor

Source · UniProt accession via ChEMBL component mapping
Review Cue

How to read this target

Review this target as D(1B) dopamine receptor, mapped to UniProt P21918. Sequence length is 477 aa.

Mapped IDP21918
Review nameD(1B) dopamine receptor
OrganismHomo sapiens
Disease Relevance

Disease Relevance & Evidence Level

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

Late clinical Open Targets-ready proxy

D(1B) dopamine receptor shows late clinical disease relevance led by Parkinson disease. 2 more disease programs remain visible in the same review block.

Late clinical Phase III
Parkinson disease
1 linked drug · 1 direct · 1 efficacy
Linked drugTAVAPADON
Clinical signal Phase I
kidney disease
1 linked drug · 1 direct · 1 efficacy
Linked drugTAVAPADON
Clinical signal Phase I
liver disease
1 linked drug · 1 direct · 1 efficacy
Linked drugTAVAPADON
Source · ChEMBL drug mechanism + indication proxy
Review Cue

How to read disease relevance

Start review with Parkinson disease because it currently carries late clinical support. Linked drugs include TAVAPADON. This disease block keeps the Open Targets-ready contract explicit while current evidence comes from ChEMBL mechanism and indication mappings.

Lead diseaseParkinson disease
Strongest levelLate clinical
Block modeOpen Targets-ready proxy
Clinical Profile

Clinical Phase Distribution

22
Approved
1
Phase III
7
Phase II
Assay Mix

Activity Type Distribution

IC5021.0
KI830.0
EC5035.0
KD4.0
Lead Set

Top Inhibitors (by pChEMBL)

ChEMBL IDpChEMBLTypeValue (nM)Phase
CHEMBL203637 10.28 Ki 0.053 Preclinical
CHEMBL1814790 9.82 IC50 0.15 Preclinical
CHEMBL1814790 9.77 Ki 0.17 Preclinical
CHEMBL245764 9.64 Ki 0.23 Preclinical
CHEMBL5207281 9.62 Kd 0.24 Preclinical
CHEMBL5206565 9.62 Kd 0.24 Preclinical
CHEMBL4860528 9.62 Kd 0.24 Preclinical
CHEMBL5201074 9.62 Kd 0.24 Preclinical
CHEMBL62 9.52 Ki 0.3 Preclinical
CHEMBL5191141 9.43 Ki 0.37 Preclinical
Distribution

pChEMBL Value Distribution

67
5.0
87
5.5
64
6.0
49
6.5
62
7.0
36
7.5
41
8.0
34
8.5
12
9.0
8
9.5
pChEMBL
Approved Drugs

Approved Drugs

LASMIDITAN
CHEMBL3039520
Approved 2020
BREXPIPRAZOLE
CHEMBL2105760
Approved 2015
PALIPERIDONE
CHEMBL1621
Approved 2006
APOMORPHINE
CHEMBL53
Approved 2001
OLANZAPINE
CHEMBL715
Approved 1996
RISPERIDONE
CHEMBL85
Approved 1993
CLOZAPINE
CHEMBL42
Approved 1989
MAPROTILINE
CHEMBL21731
Approved 1980
DOPAMINE
CHEMBL59
Approved 1974
CHLORPROTHIXENE
CHEMBL908
Approved 1967
HALOPERIDOL
CHEMBL54
Approved 1967
AMITRIPTYLINE
CHEMBL629
Approved 1961
FLUPHENAZINE
CHEMBL726
Approved 1959
CHLORPROMAZINE
CHEMBL71
Approved 1957
Assay Landscape

Assay Landscape

271
Total Assays
411
Tested Compounds
3
Assay Types
Binding — 245 assays, 411 compounds
BAO Format Assays Compounds Avg pChEMBL
single protein format 162 169 6.8
cell-based format 75 199 6.6
cell membrane format 5 3 6.2
assay format 3 40 5.5
Functional — 21 assays, 31 compounds
BAO Format Assays Compounds Avg pChEMBL
cell-based format 17 30 8.0
assay format 3 1 8.3
single protein format 1 0
ADME — 5 assays, 0 compounds
BAO Format Assays Compounds Avg pChEMBL
cell-based format 4 0
single protein format 1 0

Confidence Score Distribution

Source · ChEMBL 36 via Core Engine