1P69

STRUCTURAL BASIS FOR VARIATION IN ADENOVIRUS AFFINITY FOR THE CELLULAR RECEPTOR CAR (P417S MUTANT)


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.10 Å
  • R-Value Free: 0.256 
  • R-Value Work: 0.215 

wwPDB Validation   3D Report Full Report


This is version 1.3 of the entry. See complete history


Literature

Structural basis for variation in adenovirus affinity for the cellular coxsackievirus and adenovirus receptor.

Howitt, J.Bewley, M.C.Graziano, V.Flanagan, J.M.Freimuth, P.

(2003) J Biol Chem 278: 26208-26215

  • DOI: 10.1074/jbc.M301492200
  • Primary Citation of Related Structures:  
    1P69, 1P6A

  • PubMed Abstract: 
  • The majority of adenovirus serotypes can bind to the coxsackievirus and adenovirus receptor (CAR) on human cells despite only limited conservation of the amino acid residues that comprise the receptor-binding sites of these viruses. Using a fluorescence anisotropy-based assay, we determined that the recombinant knob domain of the fiber protein from adenovirus serotype (Ad) 2 binds the soluble, N-terminal domain (domain 1 (D1)) of CAR with 8-fold greater affinity than does the recombinant knob domain from Ad12 ...

    The majority of adenovirus serotypes can bind to the coxsackievirus and adenovirus receptor (CAR) on human cells despite only limited conservation of the amino acid residues that comprise the receptor-binding sites of these viruses. Using a fluorescence anisotropy-based assay, we determined that the recombinant knob domain of the fiber protein from adenovirus serotype (Ad) 2 binds the soluble, N-terminal domain (domain 1 (D1)) of CAR with 8-fold greater affinity than does the recombinant knob domain from Ad12. Homology modeling predicted that the increased affinity of Ad2 knob for CAR D1 could result from additional contacts within the binding interface contributed by two residues, Ser408 and Tyr477, which are not conserved in the Ad12 knob. Consistent with this structural model, substitution of serine and tyrosine for the corresponding residues in the Ad12 knob (P417S and S489Y) increased the binding affinity by 4- and 8-fold, respectively, whereas the double mutation increased binding affinity 10-fold. X-ray structure analysis of Ad12 knob mutants P417S and S489Y indicated that both substituted residues potentially could form additional hydrogen bonds across the knob-CAR interface. Structural changes resulting from these mutations were highly localized, implying that the high tolerance for surface variation conferred by the stable knob scaffold can minimize the impact of antigenic drift on binding specificity and affinity during evolution of virus serotypes. Our results suggest that the interaction of knob domains from different adenovirus serotypes with CAR D1 can be accurately modeled using the Ad12 knob-CAR D1 crystal structure as a template.


    Related Citations: 
    • Structural analysis of the mechanism of adenovirus binding to its human cellular receptor, CAR
      Bewley, M.C., Springer, K., Zhang, Y.B., Freimuth, P., Flanagan, J.M.
      (1999) Science 286: 1579
    • Coxsackievirus and adenovirus receptor amino-terminal immunoglobulin V-related domain binds adenovirus type 2 and fiber knob from adenovirus type 12
      Freimuth, P., Springer, K., Berard, C., Hainfield, J., Bewley, M., Flanagan, J.
      (1999) J Virol 73: 1392

    Organizational Affiliation

    Biology Department, Brookhaven National Laboratory, Upton, New York 11973, USA.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Fiber protein A185Human adenovirus 12Mutation(s): 1 
Gene Names: L5
Find proteins for P36711 (Human adenovirus A serotype 12)
Explore P36711 
Go to UniProtKB:  P36711
Protein Feature View
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  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Coxsackievirus and adenovirus receptor B124Homo sapiensMutation(s): 0 
Gene Names: CXADRCAR
Find proteins for P78310 (Homo sapiens)
Explore P78310 
Go to UniProtKB:  P78310
NIH Common Fund Data Resources
PHAROS:  P78310
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.10 Å
  • R-Value Free: 0.256 
  • R-Value Work: 0.215 
  • Space Group: P 43 3 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 168.62α = 90
b = 168.62β = 90
c = 168.62γ = 90
Software Package:
Software NamePurpose
HKL-2000data collection
SCALEPACKdata scaling
AMoREphasing
CNSrefinement
HKL-2000data reduction

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2004-05-11
    Type: Initial release
  • Version 1.1: 2008-04-29
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 1.3: 2018-08-22
    Changes: Data collection, Database references, Source and taxonomy, Structure summary