2VR3

Structural and Biochemical Characterization of Fibrinogen binding to ClfA from Staphylocccus aureus


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.95 Å
  • R-Value Free: 0.279 
  • R-Value Work: 0.211 
  • R-Value Observed: 0.213 

Starting Model: experimental
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wwPDB Validation   3D Report Full Report


This is version 1.3 of the entry. See complete history


Literature

A Structural Model of the Staphylococcus Aureus Clfa-Fibrinogen Interaction Opens New Avenues for the Design of Anti-Staphylococcal Therapeutics.

Ganesh, V.K.Rivera, J.J.Smeds, E.Ko, Y.P.Bowden, M.G.Wann, E.R.Gurusiddappa, S.Fitzgerald, J.R.Hook, M.

(2008) PLoS Pathog 4: 226

  • DOI: https://doi.org/10.1371/journal.ppat.1000226
  • Primary Citation of Related Structures:  
    2VR3

  • PubMed Abstract: 

    The fibrinogen (Fg) binding MSCRAMM Clumping factor A (ClfA) from Staphylococcus aureus interacts with the C-terminal region of the fibrinogen (Fg) gamma-chain. ClfA is the major virulence factor responsible for the observed clumping of S. aureus in blood plasma and has been implicated as a virulence factor in a mouse model of septic arthritis and in rabbit and rat models of infective endocarditis. We report here a high-resolution crystal structure of the ClfA ligand binding segment in complex with a synthetic peptide mimicking the binding site in Fg. The residues in Fg required for binding to ClfA are identified from this structure and from complementing biochemical studies. Furthermore, the platelet integrin alpha(IIb)beta(3) and ClfA bind to the same segment in the Fg gamma-chain but the two cellular binding proteins recognize different residues in the common targeted Fg segment. Based on these differences, we have identified peptides that selectively antagonize the ClfA-Fg interaction. The ClfA-Fg binding mechanism is a variant of the "Dock, Lock and Latch" mechanism previously described for the Staphylococcus epidermidis SdrG-Fg interaction. The structural insights gained from analyzing the ClfANFg peptide complex and identifications of peptides that selectively recognize ClfA but not alpha(IIb)beta(3) may allow the design of novel anti-staphylococcal agents. Our results also suggest that different MSCRAMMs with similar structural organization may have originated from a common ancestor but have evolved to accommodate specific ligand structures.


  • Organizational Affiliation

    Center for Extracellular Matrix Biology, Institute of Biosciences and Technology, Texas A & M University Health Science Center, Houston, Texas, USA.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
CLUMPING FACTOR A
A, B
329Staphylococcus aureusMutation(s): 2 
UniProt
Find proteins for Q2G015 (Staphylococcus aureus (strain NCTC 8325 / PS 47))
Explore Q2G015 
Go to UniProtKB:  Q2G015
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ2G015
Sequence Annotations
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  • Reference Sequence

Find similar proteins by:  Sequence   |   3D Structure  

Entity ID: 2
MoleculeChains Sequence LengthOrganismDetailsImage
FIBRINOGEN GAMMA-CHAIN
C, D
13Homo sapiensMutation(s): 1 
UniProt & NIH Common Fund Data Resources
Find proteins for P02679 (Homo sapiens)
Explore P02679 
Go to UniProtKB:  P02679
PHAROS:  P02679
GTEx:  ENSG00000171557 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP02679
Sequence Annotations
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.95 Å
  • R-Value Free: 0.279 
  • R-Value Work: 0.211 
  • R-Value Observed: 0.213 
  • Space Group: P 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 35.427α = 85.44
b = 61.836β = 81.84
c = 81.777γ = 82.45
Software Package:
Software NamePurpose
REFMACrefinement

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2009-05-19
    Type: Initial release
  • Version 1.1: 2011-05-08
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 1.3: 2023-12-13
    Changes: Data collection, Database references, Other, Refinement description