3OXU

Complement components factor H CCP19-20 and C3d in complex


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.1 Å
  • R-Value Free: 0.206 
  • R-Value Work: 0.171 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Structural basis for engagement by complement factor H of C3b on a self surface.

Morgan, H.P.Schmidt, C.Q.Guariento, M.Blaum, B.S.Gillespie, D.Herbert, A.P.Kavanagh, D.Mertens, H.D.Svergun, D.I.Johansson, C.M.Uhrin, D.Barlow, P.N.Hannan, J.P.

(2011) Nat.Struct.Mol.Biol. 18: 463-470

  • DOI: 10.1038/nsmb.2018

  • PubMed Abstract: 
  • Complement factor H (FH) attenuates C3b molecules tethered by their thioester domains to self surfaces and thereby protects host tissues. Factor H is a cofactor for initial C3b proteolysis that ultimately yields a surface-attached fragment (C3d) corr ...

    Complement factor H (FH) attenuates C3b molecules tethered by their thioester domains to self surfaces and thereby protects host tissues. Factor H is a cofactor for initial C3b proteolysis that ultimately yields a surface-attached fragment (C3d) corresponding to the thioester domain. We used NMR and X-ray crystallography to study the C3d-FH19-20 complex in atomic detail and identify glycosaminoglycan-binding residues in factor H module 20 of the C3d-FH19-20 complex. Mutagenesis justified the merging of the C3d-FH19-20 structure with an existing C3b-FH1-4 crystal structure. We concatenated the merged structure with the available FH6-8 crystal structure and new SAXS-derived FH1-4, FH8-15 and FH15-19 envelopes. The combined data are consistent with a bent-back factor H molecule that binds through its termini to two sites on one C3b molecule and simultaneously to adjacent polyanionic host-surface markers.


    Organizational Affiliation

    Institute of Structural and Molecular Biology, School of Biological Sciences, King's Buildings, University of Edinburgh, Edinburgh, UK.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Complement C3
A, B, C
317Homo 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
HF protein
D, E, F
129Homo sapiensMutation(s): 0 
Gene Names: CFH (HF, HF1, HF2)
Find proteins for P08603 (Homo sapiens)
Go to Gene View: CFH
Go to UniProtKB:  P08603
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
GOL
Query on GOL

Download SDF File 
Download CCD File 
A, B, C, D, E
GLYCEROL
GLYCERIN; PROPANE-1,2,3-TRIOL
C3 H8 O3
PEDCQBHIVMGVHV-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.1 Å
  • R-Value Free: 0.206 
  • R-Value Work: 0.171 
  • Space Group: P 1
Unit Cell:
Length (Å)Angle (°)
a = 74.675α = 112.75
b = 82.990β = 110.14
c = 85.605γ = 99.96
Software Package:
Software NamePurpose
ADSCdata collection
SCALAdata scaling
PHASERphasing
PHENIXrefinement
MOSFLMdata reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2011-02-16
    Type: Initial release
  • Version 1.1: 2011-07-13
    Type: Version format compliance
  • Version 1.2: 2013-02-20
    Type: Database references