3OXU

Complement components factor H CCP19-20 and C3d in complex

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.10 Å
  • R-Value Free: 0.206 
  • R-Value Work: 0.171 
  • R-Value Observed: 0.172 

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
  • Primary Citation of Related Structures:  
    3OXU

  • 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) correspo ...

    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: 
(by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Complement C3 A, B, C317Homo sapiensMutation(s): 1 
Gene Names: C3, complement H factor, CPAMD1
Find proteins for P01024 (Homo sapiens)
Explore P01024 
Go to UniProtKB:  P01024
NIH Common Fund Data Resources
PHAROS:  P01024
GTEx:  ENSG00000125730
Protein Feature View
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  • Reference Sequence
Find similar proteins by: 
(by identity cutoff)  |  Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
HF protein D, E, F129Homo sapiensMutation(s): 0 
Gene Names: complement component C3, CFH, HF, HF1, HF2
Find proteins for P08603 (Homo sapiens)
Explore P08603 
Go to UniProtKB:  P08603
NIH Common Fund Data Resources
PHAROS:  P08603
GTEx:  ENSG00000000971
Protein Feature View
Expand
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.10 Å
  • R-Value Free: 0.206 
  • R-Value Work: 0.171 
  • R-Value Observed: 0.172 
  • Space Group: P 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 74.675α = 112.75
b = 82.99β = 110.14
c = 85.605γ = 99.96
Software Package:
Software NamePurpose
ADSCdata collection
PHASERphasing
PHENIXrefinement
MOSFLMdata reduction
SCALAdata scaling

Structure Validation

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View more in-depth experimental data

Entry History 

Deposition Data

Revision History 

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