Biological Assembly 1  

 3D View: Structure | Electron Density

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 1 assigned by authors and generated by PISA (software)

Macromolecule Content

• Total Structure Weight: 35.76 kDa 
• Atom Count: 2591 
• Residue Count: 310 
• Unique protein chains: 1

4B5Z

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

• DOI: 10.2210/pdb4B5Z/pdb

• Classification: CELL ADHESION
• Organism(s): Staphylococcus aureus subsp. aureus NCTC 8325
• Expression System: Escherichia coli BL21(DE3)
• Mutation(s): No 


• Deposited: 2012-08-08 Released: 2013-10-09 
• Deposition Author(s): Stemberk, V., Moroz, O., Atkin, K.E., Turkenburg, J.P., Potts, J.R.

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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 

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

• PubMed: 24627488 
• 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 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.

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Organizational Affiliation: 

From the Departments of Biology and.

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
FIBRONECTIN-BINDING PROTEIN A	A	321	Staphylococcus aureus subsp. aureus NCTC 8325	Mutation(s): 0  Gene Names: fnbA, SAOUHSC_02803
Find proteins for P14738 (Staphylococcus aureus (strain NCTC 8325 / PS 47)) Explore P14738  Go to UniProtKB:  P14738

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 = 62.643	α = 90
b = 75.172	β = 90
c = 85.489	γ = 90

Software Package:

Software Name	Purpose
REFMAC	refinement
HKL-2000	data reduction
SCALEPACK	data scaling
BALBES	phasing

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2012-08-08 
• Released Date: 2013-10-09 
Deposition Author(s): Stemberk, V., Moroz, O., Atkin, K.E., Turkenburg, J.P., Potts, J.R.

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