2XNX

BC1 fragment of streptococcal M1 protein in complex with human fibrinogen


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.3 Å
  • R-Value Free: 0.325 
  • R-Value Work: 0.277 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Streptococcal M1 Protein Constructs a Pathological Host Fibrinogen Network

Macheboeuf, P.Buffalo, C.Fu, C.Y.Zinkernagel, A.S.Cole, J.N.Johnson, J.E.Nizet, V.Nizet, V.Ghosh, P.

(2011) Nature 472: 64

  • DOI: 10.1038/nature09967
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • M1 protein, a major virulence factor of the leading invasive strain of group A Streptococcus, is sufficient to induce toxic-shock-like vascular leakage and tissue injury. These events are triggered by the formation of a complex between M1 and fibrino ...

    M1 protein, a major virulence factor of the leading invasive strain of group A Streptococcus, is sufficient to induce toxic-shock-like vascular leakage and tissue injury. These events are triggered by the formation of a complex between M1 and fibrinogen that, unlike M1 or fibrinogen alone, leads to neutrophil activation. Here we provide a structural explanation for the pathological properties of the complex formed between streptococcal M1 and human fibrinogen. A conformationally dynamic coiled-coil dimer of M1 was found to organize four fibrinogen molecules into a specific cross-like pattern. This pattern supported the construction of a supramolecular network that was required for neutrophil activation but was distinct from a fibrin clot. Disruption of this network into other supramolecular assemblies was not tolerated. These results have bearing on the pathophysiology of streptococcal toxic shock.


    Organizational Affiliation

    Department of Chemistry and Biochemistry, University of California, San Diego, La Jolla, California 92093, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
FIBRINOGEN ALPHA CHAIN
A, D, G, J
87Homo sapiensMutation(s): 0 
Gene Names: FGA
Find proteins for P02671 (Homo sapiens)
Go to Gene View: FGA
Go to UniProtKB:  P02671
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
FIBRINOGEN BETA CHAIN
B, E, H, K
328Homo sapiensMutation(s): 0 
Gene Names: FGB
Find proteins for P02675 (Homo sapiens)
Go to Gene View: FGB
Go to UniProtKB:  P02675
Entity ID: 3
MoleculeChainsSequence LengthOrganismDetails
FIBRINOGEN GAMMA CHAIN
C, F, I, L
319Homo sapiensMutation(s): 0 
Gene Names: FGG
Find proteins for P02679 (Homo sapiens)
Go to Gene View: FGG
Go to UniProtKB:  P02679
Entity ID: 4
MoleculeChainsSequence LengthOrganismDetails
M PROTEIN
M, N
146N/AMutation(s): 0 
Protein Feature View is not available: No corresponding UniProt sequence found.
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.3 Å
  • R-Value Free: 0.325 
  • R-Value Work: 0.277 
  • Space Group: P 1 21 1
Unit Cell:
Length (Å)Angle (°)
a = 112.723α = 90.00
b = 216.866β = 102.54
c = 140.807γ = 90.00
Software Package:
Software NamePurpose
PHASERphasing
REFMACrefinement
MOSFLMdata reduction
SCALAdata scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2011-04-13
    Type: Initial release
  • Version 1.1: 2011-05-08
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance