6PT2

Crystal structure of the active delta opioid receptor in complex with the peptide agonist KGCHM07


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.80 Å
  • R-Value Free: 0.282 
  • R-Value Work: 0.246 
  • R-Value Observed: 0.247 

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Ligand Structure Quality Assessment 


This is version 1.1 of the entry. See complete history


Literature

Elucidating the active delta-opioid receptor crystal structure with peptide and small-molecule agonists.

Claff, T.Yu, J.Blais, V.Patel, N.Martin, C.Wu, L.Han, G.W.Holleran, B.J.Van der Poorten, O.White, K.L.Hanson, M.A.Sarret, P.Gendron, L.Cherezov, V.Katritch, V.Ballet, S.Liu, Z.J.Muller, C.E.Stevens, R.C.

(2019) Sci Adv 5: eaax9115-eaax9115

  • DOI: 10.1126/sciadv.aax9115
  • Primary Citation of Related Structures:  
    6PT3, 6PT2

  • PubMed Abstract: 
  • Selective activation of the δ-opioid receptor (DOP) has great potential for the treatment of chronic pain, benefitting from ancillary anxiolytic and antidepressant-like effects. Moreover, DOP agonists show reduced adverse effects as compared to μ-opioid receptor (MOP) agonists that are in the spotlight of the current "opioid crisis ...

    Selective activation of the δ-opioid receptor (DOP) has great potential for the treatment of chronic pain, benefitting from ancillary anxiolytic and antidepressant-like effects. Moreover, DOP agonists show reduced adverse effects as compared to μ-opioid receptor (MOP) agonists that are in the spotlight of the current "opioid crisis." Here, we report the first crystal structures of the DOP in an activated state, in complex with two relevant and structurally diverse agonists: the potent opioid agonist peptide KGCHM07 and the small-molecule agonist DPI-287 at 2.8 and 3.3 Å resolution, respectively. Our study identifies key determinants for agonist recognition, receptor activation, and DOP selectivity, revealing crucial differences between both agonist scaffolds. Our findings provide the first investigation into atomic-scale agonist binding at the DOP, supported by site-directed mutagenesis and pharmacological characterization. These structures will underpin the future structure-based development of DOP agonists for an improved pain treatment with fewer adverse effects.


    Organizational Affiliation

    Departments of Biological Sciences and Chemistry, Bridge Institute, USC Michelson Center for Convergent Bioscience, University of Southern California, Los Angeles, CA 90089, USA.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Delta opioid receptorA, B454Homo sapiensMutation(s): 0 
Gene Names: OPRD1OPRD
Membrane Entity: Yes 
UniProt & NIH Common Fund Data Resources
Find proteins for P41143 (Homo sapiens)
Explore P41143 
Go to UniProtKB:  P41143
PHAROS:  P41143
Protein Feature View
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  • Reference Sequence
  • Find similar proteins by:  Sequence   |   Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Peptide agonist KGCHM07C, D5synthetic constructMutation(s): 0 
Protein Feature View
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  • Reference Sequence
Small Molecules
Modified Residues  2 Unique
IDChainsTypeFormula2D DiagramParent
DI7
Query on DI7
C, DL-PEPTIDE LINKINGC11 H15 N O3TYR
SAR
Query on SAR
C, DPEPTIDE LINKINGC3 H7 N O2GLY
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.80 Å
  • R-Value Free: 0.282 
  • R-Value Work: 0.246 
  • R-Value Observed: 0.247 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 48.96α = 90
b = 140.88β = 90
c = 158.64γ = 90
Software Package:
Software NamePurpose
PHASERphasing
BUSTERrefinement
PDB_EXTRACTdata extraction
XDSdata reduction
XSCALEdata scaling

Structure Validation

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Ligand Structure Quality Assessment  



Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2019-12-11
    Type: Initial release
  • Version 1.1: 2019-12-18
    Changes: Database references