3UEZ

Crystal structure of the human Colony-Stimulating Factor 1 (hCSF-1) cytokine in complex with the viral receptor BARF1


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.41 Å
  • R-Value Free: 0.274 
  • R-Value Work: 0.231 
  • R-Value Observed: 0.234 

wwPDB Validation   3D Report Full Report


This is version 2.0 of the entry. See complete history


Literature

Allosteric competitive inactivation of hematopoietic CSF-1 signaling by the viral decoy receptor BARF1

Elegheert, J.Bracke, N.Pouliot, P.Gutsche, I.Shkumatov, A.V.Tarbouriech, N.Verstraete, K.Bekaert, A.Burmeister, W.P.Svergun, D.I.Lambrecht, B.N.Vergauwen, B.Savvides, S.N.

(2012) Nat Struct Mol Biol 19: 938-947

  • DOI: 10.1038/nsmb.2367
  • Primary Citation of Related Structures:  
    3UEZ, 3UF2, 3UF5, 4ADF, 4ADQ

  • PubMed Abstract: 
  • Hematopoietic human colony-stimulating factor 1 (hCSF-1) is essential for innate and adaptive immunity against viral and microbial infections and cancer. The human pathogen Epstein-Barr virus secretes the lytic-cycle protein BARF1 that neutralizes hCSF-1 to achieve immunomodulation ...

    Hematopoietic human colony-stimulating factor 1 (hCSF-1) is essential for innate and adaptive immunity against viral and microbial infections and cancer. The human pathogen Epstein-Barr virus secretes the lytic-cycle protein BARF1 that neutralizes hCSF-1 to achieve immunomodulation. Here we show that BARF1 binds the dimer interface of hCSF-1 with picomolar affinity, away from the cognate receptor-binding site, to establish a long-lived complex featuring three hCSF-1 at the periphery of the BARF1 toroid. BARF1 locks dimeric hCSF-1 into an inactive conformation, rendering it unable to signal via its cognate receptor on human monocytes. This reveals a new functional role for hCSF-1 cooperativity in signaling. We propose a new viral strategy paradigm featuring an allosteric decoy receptor of the competitive type, which couples efficient sequestration and inactivation of the host growth factor to abrogate cooperative assembly of the cognate signaling complex.


    Organizational Affiliation

    Laboratory for Protein Biochemistry and Biomolecular Engineering, Department of Biochemistry & Microbiology, Ghent University, Ghent, Belgium.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Secreted protein BARF1A, B, C, D208Human herpesvirus 4 strain B95-8Mutation(s): 1 
Gene Names: BARF1
UniProt
Find proteins for P03228 (Epstein-Barr virus (strain B95-8))
Explore P03228 
Go to UniProtKB:  P03228
Protein Feature View
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  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Macrophage colony-stimulating factor 1E, F, G, H153Homo sapiensMutation(s): 0 
Gene Names: CSF1
UniProt & NIH Common Fund Data Resources
Find proteins for P09603 (Homo sapiens)
Explore P09603 
Go to UniProtKB:  P09603
PHAROS:  P09603
Protein Feature View
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  • Reference Sequence
Oligosaccharides

Help

Entity ID: 3
MoleculeChainsChain Length2D DiagramGlycosylation3D Interactions
beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranoseI, J, K, L3N-Glycosylation Oligosaccharides Interaction
Glycosylation Resources
GlyTouCan:  G15407YE
GlyCosmos:  G15407YE
GlyGen:  G15407YE
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.41 Å
  • R-Value Free: 0.274 
  • R-Value Work: 0.231 
  • R-Value Observed: 0.234 
  • Space Group: H 3
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 235.24α = 90
b = 235.24β = 90
c = 95.71γ = 120
Software Package:
Software NamePurpose
PHENIXrefinement

Structure Validation

View Full Validation Report




Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2012-08-22
    Type: Initial release
  • Version 1.1: 2013-07-17
    Changes: Database references
  • Version 2.0: 2020-07-29
    Type: Remediation
    Reason: Carbohydrate remediation
    Changes: Atomic model, Data collection, Database references, Derived calculations, Structure summary