5WF6

Agonist bound human A2a adenosine receptor with S91A mutation at 2.90 A resolution


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.90 Å
  • R-Value Free: 0.288 
  • R-Value Work: 0.253 
  • R-Value Observed: 0.254 

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Ligand Structure Quality Assessment 


This is version 1.0 of the entry. See complete history


Literature

Structural Connection between Activation Microswitch and Allosteric Sodium Site in GPCR Signaling.

White, K.L.Eddy, M.T.Gao, Z.G.Han, G.W.Lian, T.Deary, A.Patel, N.Jacobson, K.A.Katritch, V.Stevens, R.C.

(2018) Structure 26: 259-269.e5

  • DOI: 10.1016/j.str.2017.12.013
  • Primary Citation of Related Structures:  
    5WF5, 5WF6

  • PubMed Abstract: 
  • Sodium ions are endogenous allosteric modulators of many G-protein-coupled receptors (GPCRs). Mutation of key residues in the sodium binding motif causes a striking effect on G-protein signaling. We report the crystal structures of agonist complexes for two variants in the first sodium coordination shell of the human A 2A adenosine receptor, D52 2 ...

    Sodium ions are endogenous allosteric modulators of many G-protein-coupled receptors (GPCRs). Mutation of key residues in the sodium binding motif causes a striking effect on G-protein signaling. We report the crystal structures of agonist complexes for two variants in the first sodium coordination shell of the human A 2A adenosine receptor, D52 2.50 N and S91 3.39 A. Both structures present an overall active-like conformation; however, the variants show key changes in the activation motif NPxxY. Changes in the hydrogen bonding network in this microswitch suggest a possible mechanism for modified G-protein signaling and enhanced thermal stability. These structures, signaling data, and thermal stability analysis with a panel of pharmacological ligands provide a basis for understanding the role of the sodium-coordinating residues on stability and G-protein signaling. Utilizing the D 2.50 N variant is a promising method for stabilizing class A GPCRs to accelerate structural efforts and drug discovery.


    Organizational Affiliation

    Departments of Biological Sciences and Chemistry, Bridge Institute, USC Michelson Center, University of Southern California, 1002 West Childs Way, Los Angeles, CA 90089, USA. Electronic address: stevens@usc.edu.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Human A2a adenosine receptor T4L chimeraA504Homo sapiensEscherichia virus T4Mutation(s): 5 
Gene Names: ADORA2AADORA2E
EC: 3.2.1.17
Membrane Entity: Yes 
UniProt & NIH Common Fund Data Resources
Find proteins for P29274 (Homo sapiens)
Explore P29274 
Go to UniProtKB:  P29274
PHAROS:  P29274
Find proteins for P00720 (Enterobacteria phage T4)
Explore P00720 
Go to UniProtKB:  P00720
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
UKA (Subject of Investigation/LOI)
Query on UKA

Download Ideal Coordinates CCD File 
B [auth A]6-(2,2-diphenylethylamino)-9-[(2R,3R,4S,5S)-5-(ethylcarbamoyl)-3,4-dihydroxy-oxolan-2-yl]-N-[2-[(1-pyridin-2-ylpiperidin-4-yl)carbamoylamino]ethyl]purine-2-carboxamide
C40 H47 N11 O6
ZOTHAEBAWXWVID-HXEFRTELSA-N
 Ligand Interaction
OLC (Subject of Investigation/LOI)
Query on OLC

Download Ideal Coordinates CCD File 
C [auth A](2R)-2,3-dihydroxypropyl (9Z)-octadec-9-enoate
C21 H40 O4
RZRNAYUHWVFMIP-GDCKJWNLSA-N
 Ligand Interaction
Binding Affinity Annotations 
IDSourceBinding Affinity
UKA BindingDB:  5WF6 Ki: 4 (nM) from 1 assay(s)
IC50: 4 (nM) from 1 assay(s)
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.90 Å
  • R-Value Free: 0.288 
  • R-Value Work: 0.253 
  • R-Value Observed: 0.254 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 47.783α = 90
b = 78.226β = 101.2
c = 86.477γ = 90
Software Package:
Software NamePurpose
PHENIXrefinement
DENZOdata reduction
SCALEPACKdata scaling
PHASERphasing

Structure Validation

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Ligand Structure Quality Assessment  



Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2018-02-21
    Type: Initial release