5A0L

N-terminal thioester domain of fibronectin-binding protein SfbI from Streptococcus pyogenes


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.35 Å
  • R-Value Free: 0.153 
  • R-Value Work: 0.131 
  • R-Value Observed: 0.132 

wwPDB Validation   3D Report Full Report


This is version 1.4 of the entry. See complete history


Literature

An internal thioester in a pathogen surface protein mediates covalent host binding.

Walden, M.Edwards, J.M.Dziewulska, A.M.Bergmann, R.Saalbach, G.Kan, S.Y.Miller, O.K.Weckener, M.Jackson, R.J.Shirran, S.L.Botting, C.H.Florence, G.J.Rohde, M.Banfield, M.J.Schwarz-Linek, U.

(2015) Elife 4

  • DOI: https://doi.org/10.7554/eLife.06638
  • Primary Citation of Related Structures:  
    5A0D, 5A0G, 5A0L, 5A0N

  • PubMed Abstract: 

    To cause disease and persist in a host, pathogenic and commensal microbes must adhere to tissues. Colonization and infection depend on specific molecular interactions at the host-microbe interface that involve microbial surface proteins, or adhesins. To date, adhesins are only known to bind to host receptors non-covalently. Here we show that the streptococcal surface protein SfbI mediates covalent interaction with the host protein fibrinogen using an unusual internal thioester bond as a 'chemical harpoon'. This cross-linking reaction allows bacterial attachment to fibrin and SfbI binding to human cells in a model of inflammation. Thioester-containing domains are unexpectedly prevalent in Gram-positive bacteria, including many clinically relevant pathogens. Our findings support bacterial-encoded covalent binding as a new molecular principle in host-microbe interactions. This represents an as yet unexploited target to treat bacterial infection and may also offer novel opportunities for engineering beneficial interactions.


  • Organizational Affiliation

    Department of Biological Chemistry, John Innes Centre, Norwich, United Kingdom.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
FIBRONECTIN-BINDING PROTEIN
A, B
210Streptococcus pyogenes MGAS2096Mutation(s): 0 
UniProt
Find proteins for A0A0M3KL43 (Streptococcus pyogenes serotype M12 (strain MGAS2096))
Explore A0A0M3KL43 
Go to UniProtKB:  A0A0M3KL43
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupA0A0M3KL43
Sequence Annotations
Expand
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.35 Å
  • R-Value Free: 0.153 
  • R-Value Work: 0.131 
  • R-Value Observed: 0.132 
  • Space Group: I 41
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 165.12α = 90
b = 165.12β = 90
c = 42.52γ = 90
Software Package:
Software NamePurpose
REFMACrefinement
xia2data reduction
xia2data scaling
PHENIXphasing

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2015-06-03
    Type: Initial release
  • Version 1.1: 2015-06-10
    Changes: Database references
  • Version 1.2: 2017-03-22
    Changes: Database references
  • Version 1.3: 2019-10-30
    Changes: Advisory, Data collection, Derived calculations, Other
  • Version 1.4: 2024-05-08
    Changes: Data collection, Database references, Derived calculations