3PBL

Structure of the human dopamine D3 receptor in complex with eticlopride


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.89 Å
  • R-Value Free: 0.272 
  • R-Value Work: 0.243 
  • R-Value Observed: 0.245 

Starting Model: experimental
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This is version 2.2 of the entry. See complete history


Literature

Structure of the human dopamine d3 receptor in complex with a d2/d3 selective antagonist.

Chien, E.Y.Liu, W.Zhao, Q.Katritch, V.Han, G.W.Hanson, M.A.Shi, L.Newman, A.H.Javitch, J.A.Cherezov, V.Stevens, R.C.

(2010) Science 330: 1091-1095

  • DOI: https://doi.org/10.1126/science.1197410
  • Primary Citation of Related Structures:  
    3PBL

  • PubMed Abstract: 

    Dopamine modulates movement, cognition, and emotion through activation of dopamine G protein-coupled receptors in the brain. The crystal structure of the human dopamine D3 receptor (D3R) in complex with the small molecule D2R/D3R-specific antagonist eticlopride reveals important features of the ligand binding pocket and extracellular loops. On the intracellular side of the receptor, a locked conformation of the ionic lock and two distinctly different conformations of intracellular loop 2 are observed. Docking of R-22, a D3R-selective antagonist, reveals an extracellular extension of the eticlopride binding site that comprises a second binding pocket for the aryl amide of R-22, which differs between the highly homologous D2R and D3R. This difference provides direction to the design of D3R-selective agents for treating drug abuse and other neuropsychiatric indications.


  • Organizational Affiliation

    Department of Molecular Biology, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, CA 92037, USA.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
D(3) dopamine receptor, Lysozyme chimera
A, B
481Homo sapiensTequatrovirus T4Mutation(s): 3 
Gene Names: DRD3E
EC: 3.2.1.17
Membrane Entity: Yes 
UniProt & NIH Common Fund Data Resources
Find proteins for P35462 (Homo sapiens)
Explore P35462 
Go to UniProtKB:  P35462
PHAROS:  P35462
GTEx:  ENSG00000151577 
Find proteins for P00720 (Enterobacteria phage T4)
Explore P00720 
Go to UniProtKB:  P00720
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupsP00720P35462
Sequence Annotations
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  • Reference Sequence
Oligosaccharides

Help

Entity ID: 2
MoleculeChains Length2D Diagram Glycosylation3D Interactions
alpha-D-glucopyranose-(1-4)-alpha-D-glucopyranose
C, D
2N/A
Glycosylation Resources
GlyTouCan:  G07411ON
GlyCosmos:  G07411ON
Small Molecules
Ligands 1 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
ETQ
Query on ETQ

Download Ideal Coordinates CCD File 
E [auth A],
F [auth B]
3-chloro-5-ethyl-N-{[(2S)-1-ethylpyrrolidin-2-yl]methyl}-6-hydroxy-2-methoxybenzamide
C17 H25 Cl N2 O3
AADCDMQTJNYOSS-LBPRGKRZSA-N
Binding Affinity Annotations 
IDSourceBinding Affinity
ETQ BindingDB:  3PBL Ki: min: 0.1, max: 0.16 (nM) from 5 assay(s)
Biologically Interesting Molecules (External Reference) 1 Unique
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.89 Å
  • R-Value Free: 0.272 
  • R-Value Work: 0.243 
  • R-Value Observed: 0.245 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 88.828α = 90
b = 92.492β = 90
c = 176.116γ = 90
Software Package:
Software NamePurpose
Blu-Icedata collection
PHASERphasing
BUSTERrefinement
HKL-2000data reduction
SCALEPACKdata scaling

Structure Validation

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Ligand Structure Quality Assessment 


Entry History 

Revision History  (Full details and data files)

  • Version 1.0: 2010-11-03
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Version format compliance
  • Version 1.2: 2012-05-09
    Changes: Structure summary
  • Version 1.3: 2017-08-16
    Changes: Refinement description, Source and taxonomy
  • Version 2.0: 2020-07-29
    Type: Remediation
    Reason: Carbohydrate remediation
    Changes: Advisory, Atomic model, Data collection, Database references, Derived calculations, Non-polymer description, Structure summary
  • Version 2.1: 2023-09-06
    Changes: Data collection, Database references, Refinement description, Structure summary
  • Version 2.2: 2024-10-16
    Changes: Structure summary