1F5W

DIMERIC STRUCTURE OF THE COXSACKIE VIRUS AND ADENOVIRUS RECEPTOR D1 DOMAIN


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.70 Å
  • R-Value Free: 0.193 
  • R-Value Work: 0.158 
  • R-Value Observed: 0.160 

Starting Model: experimental
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This is version 1.3 of the entry. See complete history


Literature

Dimeric structure of the coxsackievirus and adenovirus receptor D1 domain at 1.7 A resolution.

van Raaij, M.J.Chouin, E.van der Zandt, H.Bergelson, J.M.Cusack, S.

(2000) Structure 8: 1147-1155

  • DOI: https://doi.org/10.1016/s0969-2126(00)00528-1
  • Primary Citation of Related Structures:  
    1EAJ, 1F5W

  • PubMed Abstract: 

    The coxsackievirus and adenovirus receptor (CAR) comprises two extracellular immunoglobulin domains, a transmembrane helix and a C-terminal intracellular domain. The amino-terminal immunoglobulin domain (D1) of CAR is necessary and sufficient for adenovirus binding, whereas the site of coxsackievirus attachment has not yet been localized. The normal cellular role of CAR is currently unknown, although CAR was recently proposed to function as a homophilic cell adhesion molecule. The human CAR D1 domain was bacterially expressed and crystallized. The structure was solved by molecular replacement using the structure of CAR D1 bound to the adenovirus type 12 fiber head and refined to 1.7 A resolution, including individual anisotropic temperature factors. The two CAR D1 structures are virtually identical, apart from the BC, C"D, and FG loops that are involved both in fiber head binding and homodimerization in the crystal. Analytical equilibrium ultracentrifugation shows that a dimer also exists in solution, with a dissociation constant of 16 microM. The CAR D1 domain forms homodimers in the crystal using the same GFCC'C" surface that interacts with the adenovirus fiber head. The homodimer is very similar to the CD2 D1-CD58 D1 heterodimer. CAR D1 also forms dimers in solution with a dissociation constant typical of other cell adhesion complexes. These results are consistent with reports that CAR may function physiologically as a homophilic cell adhesion molecule in the developing mouse brain. Adenovirus may thus have recruited an existing and conserved interaction surface of CAR to use for its own cell attachment.


  • Organizational Affiliation

    European Molecular Biology Laboratory Grenoble Outstation c/o Institut Laue Langevin BP 156 F-38042 9, Grenoble Cedex, France. m.vanraaij@chem.leidenuniv.nl


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
COXSACKIE VIRUS AND ADENOVIRUS RECEPTOR
A, B
126Homo sapiensMutation(s): 0 
UniProt & NIH Common Fund Data Resources
Find proteins for P78310 (Homo sapiens)
Explore P78310 
Go to UniProtKB:  P78310
PHAROS:  P78310
GTEx:  ENSG00000154639 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP78310
Sequence Annotations
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.70 Å
  • R-Value Free: 0.193 
  • R-Value Work: 0.158 
  • R-Value Observed: 0.160 
  • Space Group: P 43 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 68.337α = 90
b = 68.337β = 90
c = 146.356γ = 90
Software Package:
Software NamePurpose
MOSFLMdata reduction
SCALAdata scaling
AMoREphasing
REFMACrefinement
CCP4data scaling

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2000-11-08
    Type: Initial release
  • Version 1.1: 2008-04-27
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 1.3: 2023-08-09
    Changes: Data collection, Database references, Derived calculations, Refinement description