2GOX

Crystal structure of Efb-C / C3d Complex

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.2 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:  

  • 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: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Complement C3
A, C
297Homo sapiensMutation(s): 1 
Gene Names: C3 (CPAMD1)
Find proteins for P01024 (Homo sapiens)
Go to Gene View: C3
Go to UniProtKB:  P01024
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Fibrinogen-binding protein
B, D
65Staphylococcus aureus (strain Mu50 / ATCC 700699)Mutation(s): 0 
Gene Names: fib (efb)
Find proteins for P68799 (Staphylococcus aureus (strain Mu50 / ATCC 700699))
Go to UniProtKB:  P68799
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.2 Å
  • R-Value Free: 0.231 
  • R-Value Work: 0.181 
  • Space Group: P 41
Unit Cell:
Length (Å)Angle (°)
a = 90.939α = 90.00
b = 90.939β = 90.00
c = 122.242γ = 90.00
Software Package:
Software NamePurpose
MOLREPphasing
PDB_EXTRACTdata extraction
SCALEPACKdata scaling
DENZOdata reduction
REFMACrefinement

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
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Advisory, Version format compliance
  • Version 1.3: 2017-10-18
    Type: Refinement description