4B5Z

Structure of the apo-rFnBPA(189-505) from Staphylococcus aureus


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.20 Å
  • R-Value Free: 0.230 
  • R-Value Work: 0.182 
  • R-Value Observed: 0.184 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Evidence for Steric Regulation of Fibrinogen Binding to Staphylococcus Aureus Fibronectin-Binding Protein a (Fnbpa).

Stemberk, V.Jones, R.P.Moroz, O.Atkin, K.E.Edwards, A.M.Turkenburg, J.P.Leech, A.P.Massey, R.C.Potts, J.R.

(2014) J Biol Chem 289: 12842

  • DOI: 10.1074/jbc.M113.543546
  • Primary Citation of Related Structures:  
    4B60, 4B5Z

  • PubMed Abstract: 
  • The adjacent fibrinogen (Fg)- and fibronectin (Fn)-binding sites on Fn-binding protein A (FnBPA), a cell surface protein from Staphylococcus aureus, are implicated in the initiation and persistence of infection. FnBPA contains a single Fg-binding sit ...

    The adjacent fibrinogen (Fg)- and fibronectin (Fn)-binding sites on Fn-binding protein A (FnBPA), a cell surface protein from Staphylococcus aureus, are implicated in the initiation and persistence of infection. FnBPA contains a single Fg-binding site (that also binds elastin) and multiple Fn-binding sites. Here, we solved the structure of the N2N3 domains containing the Fg-binding site of FnBPA in the apo form and in complex with a Fg peptide. The Fg binding mechanism is similar to that of homologous bacterial proteins but without the requirement for "latch" strand residues. We show that the Fg-binding sites and the most N-terminal Fn-binding sites are nonoverlapping but in close proximity. Although Fg and a subdomain of Fn can form a ternary complex on an FnBPA protein construct containing a Fg-binding site and single Fn-binding site, binding of intact Fn appears to inhibit Fg binding, suggesting steric regulation. Given the concentrations of Fn and Fg in the plasma, this mechanism might result in targeting of S. aureus to fibrin-rich thrombi or elastin-rich tissues.


    Organizational Affiliation

    From the Departments of Biology and.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
FIBRONECTIN-BINDING PROTEIN AA321Staphylococcus aureus subsp. aureus NCTC 8325Mutation(s): 0 
Gene Names: fnbASAOUHSC_02803
Find proteins for P14738 (Staphylococcus aureus (strain NCTC 8325 / PS 47))
Explore P14738 
Go to UniProtKB:  P14738
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.20 Å
  • R-Value Free: 0.230 
  • R-Value Work: 0.182 
  • R-Value Observed: 0.184 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 62.643α = 90
b = 75.172β = 90
c = 85.489γ = 90
Software Package:
Software NamePurpose
REFMACrefinement
HKL-2000data reduction
SCALEPACKdata scaling
BALBESphasing

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2013-10-09
    Type: Initial release
  • Version 1.1: 2014-03-26
    Changes: Database references
  • Version 1.2: 2014-05-14
    Changes: Database references