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



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: 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 ...

    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)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
COMPLEMENT C3A308Homo 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
Expand
 ( Mouse scroll to zoom / Hold left click to move )
  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
CR2/CD121/C3D/EPSTEIN-BARR VIRUS RECEPTORBC134Homo sapiensMutation(s): 0 
Gene Names: CR2C3DR
Find proteins for P20023 (Homo sapiens)
Explore P20023 
Go to UniProtKB:  P20023
NIH Common Fund Data Resources
PHAROS  P20023
Protein Feature View
Expand
 ( Mouse scroll to zoom / Hold left click to move )
  • Reference Sequence
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
NDG
Query on NDG

Download CCD File 
B, C
2-acetamido-2-deoxy-alpha-D-glucopyranose
C8 H15 N O6
OVRNDRQMDRJTHS-PVFLNQBWSA-N
 Ligand Interaction
ZN
Query on ZN

Download CCD File 
A, B
ZINC ION
Zn
PTFCDOFLOPIGGS-UHFFFAOYSA-N
 Ligand Interaction
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 

  • 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