2GOX

Crystal structure of Efb-C / C3d Complex


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.20 Å
  • R-Value Free: 0.231 
  • R-Value Work: 0.181 

wwPDB Validation   3D Report Full Report


This is version 1.3 of the entry. See complete history


Literature

A structural basis for complement inhibition by Staphylococcus aureus.

Hammel, M.Sfyroera, G.Ricklin, D.Magotti, P.Lambris, J.D.Geisbrecht, B.V.

(2007) Nat Immunol 8: 430-437

  • DOI: 10.1038/ni1450
  • Primary Citation of Related Structures:  
    2GOM, 2GOX

  • PubMed Abstract: 
  • To provide insight into bacterial suppression of complement-mediated immunity, we present here structures of a bacterial complement inhibitory protein, both free and bound to its complement target. The 1.25-A structure of the complement component C3- ...

    To provide insight into bacterial suppression of complement-mediated immunity, we present here structures of a bacterial complement inhibitory protein, both free and bound to its complement target. The 1.25-A structure of the complement component C3-inhibitory domain of Staphylococcus aureus extracellular fibrinogen-binding protein (Efb-C) demonstrated a helical motif involved in complement regulation, whereas the 2.2-A structure of Efb-C bound to the C3d domain of human C3 allowed insight into the recognition of complement proteins by invading pathogens. Our structure-function studies provided evidence for a previously unrecognized mode of complement inhibition whereby Efb-C binds to native C3 and alters the solution conformation of C3 in a way that renders it unable to participate in successful 'downstream' activation of the complement response.


    Organizational Affiliation

    Division of Cell Biology and Biophysics, School of Biological Sciences, University of Missouri at Kansas City, Kansas City, Missouri 64110, USA.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Complement C3AC297Homo sapiensMutation(s): 1 
Gene Names: C3CPAMD1
Find proteins for P01024 (Homo sapiens)
Explore P01024 
Go to UniProtKB:  P01024
NIH Common Fund Data Resources
PHAROS  P01024
Protein Feature View
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  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Fibrinogen-binding proteinBD65Staphylococcus aureus subsp. aureus Mu50Mutation(s): 0 
Gene Names: efbfibSAV1158
Find proteins for P68799 (Staphylococcus aureus (strain Mu50 / ATCC 700699))
Explore P68799 
Go to UniProtKB:  P68799
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: 0.231 
  • R-Value Work: 0.181 
  • Space Group: P 41
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 90.939α = 90
b = 90.939β = 90
c = 122.242γ = 90
Software Package:
Software NamePurpose
DENZOdata reduction
SCALEPACKdata scaling
MOLREPphasing
REFMACrefinement
PDB_EXTRACTdata extraction

Structure Validation

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Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2007-03-20
    Type: Initial release
  • Version 1.1: 2007-09-12
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Advisory, Version format compliance
  • Version 1.3: 2017-10-18
    Changes: Refinement description