1GHQ

CR2-C3D COMPLEX STRUCTURE


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.04 Å
  • R-Value Free: 0.239 
  • R-Value Work: 0.195 

wwPDB Validation   3D Report Full Report


This is version 2.2 of the entry. See complete history


Literature

Structure of complement receptor 2 in complex with its C3d ligand.

Szakonyi, G.Guthridge, J.M.Li, D.Young, K.Holers, V.M.Chen, X.S.

(2001) Science 292: 1725-1728

  • DOI: https://doi.org/10.1126/science.1059118
  • Primary Citation of Related Structures:  
    1GHQ

  • PubMed Abstract: 

    Complement receptor 2 (CR2/CD21) is an important receptor that amplifies B lymphocyte activation by bridging the innate and adaptive immune systems. CR2 ligands include complement C3d and Epstein-Barr virus glycoprotein 350/220. We describe the x-ray structure of this CR2 domain in complex with C3d at 2.0 angstroms. The structure reveals extensive main chain interactions between C3d and only one short consensus repeat (SCR) of CR2 and substantial SCR side-side packing. These results provide a detailed understanding of receptor-ligand interactions in this protein family and reveal potential target sites for molecular drug design.


  • Organizational Affiliation

    Department of Biochemistry and Molecular Genetics, University of Colorado Health Science Center, School of Medicine, Denver, CO 80262, USA.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
COMPLEMENT C3308Homo sapiensMutation(s): 1 
UniProt & NIH Common Fund Data Resources
Find proteins for P01024 (Homo sapiens)
Explore P01024 
Go to UniProtKB:  P01024
PHAROS:  P01024
GTEx:  ENSG00000125730 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP01024
Sequence Annotations
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  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 2
MoleculeChains Sequence LengthOrganismDetailsImage
CR2/CD121/C3D/EPSTEIN-BARR VIRUS RECEPTOR
B, C
134Homo sapiensMutation(s): 0 
UniProt & NIH Common Fund Data Resources
Find proteins for P20023 (Homo sapiens)
Explore P20023 
Go to UniProtKB:  P20023
PHAROS:  P20023
GTEx:  ENSG00000117322 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP20023
Sequence Annotations
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  • Reference Sequence
Small Molecules
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.04 Å
  • R-Value Free: 0.239 
  • R-Value Work: 0.195 
  • Space Group: H 3 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 170α = 90
b = 170β = 90
c = 174γ = 120
Software Package:
Software NamePurpose
CNSrefinement

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2001-06-13
    Type: Initial release
  • Version 1.1: 2008-04-26
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 2.0: 2020-07-29
    Type: Remediation
    Reason: Carbohydrate remediation
    Changes: Advisory, Atomic model, Data collection, Database references, Derived calculations, Structure summary
  • Version 2.1: 2021-10-27
    Changes: Advisory, Database references, Structure summary
  • Version 2.2: 2023-12-27
    Changes: Data collection