Crystal structure of full-length Bovine Papillomavirus oncoprotein E6 in complex with LD1 motif of paxillin at 2.3A resolution

Experimental Data Snapshot

  • Resolution: 2.29 Å
  • R-Value Free: 0.225 
  • R-Value Work: 0.187 
  • R-Value Observed: 0.189 

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Structural basis for hijacking of cellular LxxLL motifs by papillomavirus E6 oncoproteins.

Zanier, K.Charbonnier, S.Sidi, A.O.McEwen, A.G.Ferrario, M.G.Poussin-Courmontagne, P.Cura, V.Brimer, N.Babah, K.O.Ansari, T.Muller, I.Stote, R.H.Cavarelli, J.Vande Pol, S.Trave, G.

(2013) Science 339: 694-698

  • DOI: https://doi.org/10.1126/science.1229934
  • Primary Citation of Related Structures:  
    3PY7, 4GIZ

  • PubMed Abstract: 

    E6 viral oncoproteins are key players in epithelial tumors induced by papillomaviruses in vertebrates, including cervical cancer in humans. E6 proteins target many host proteins by specifically interacting with acidic LxxLL motifs. We solved the crystal structures of bovine (BPV1) and human (HPV16) papillomavirus E6 proteins bound to LxxLL peptides from the focal adhesion protein paxillin and the ubiquitin ligase E6AP, respectively. In both E6 proteins, two zinc domains and a linker helix form a basic-hydrophobic pocket, which captures helical LxxLL motifs in a way compatible with other interaction modes. Mutational inactivation of the LxxLL binding pocket disrupts the oncogenic activities of both E6 proteins. This work reveals the structural basis of both the multifunctionality and the oncogenicity of E6 proteins.

  • Organizational Affiliation

    Biotechnologie et Signalisation Cellulaire UMR 7242, Ecole Supérieure de Biotechnologie de Strasbourg, Boulevard Sébastien Brant, BP 10413, F-67412 Illkirch, France.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
maltose-binding periplasmic protein,paxillin LD1,protein E6 chimera523Escherichia coliDeltapapillomavirus 4Homo sapiens
This entity is chimeric
Mutation(s): 6 
Gene Names: malEPXNE6
Find proteins for P06931 (Bovine papillomavirus type 1)
Explore P06931 
Go to UniProtKB:  P06931
Find proteins for P0AEX9 (Escherichia coli (strain K12))
Explore P0AEX9 
Go to UniProtKB:  P0AEX9
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupsP06931P0AEX9
Sequence Annotations
  • Reference Sequence


Entity ID: 2
MoleculeChains Length2D Diagram Glycosylation3D Interactions
Glycosylation Resources
GlyTouCan:  G96370VA
GlyCosmos:  G96370VA
GlyGen:  G96370VA
Biologically Interesting Molecules (External Reference) 1 Unique
Experimental Data & Validation

Experimental Data

  • Resolution: 2.29 Å
  • R-Value Free: 0.225 
  • R-Value Work: 0.187 
  • R-Value Observed: 0.189 
  • Space Group: C 2 2 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 105.051α = 90
b = 123.09β = 90
c = 94.594γ = 90
Software Package:
Software NamePurpose
HKL-2000data collection
HKL-2000data reduction
HKL-2000data scaling

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2011-12-14
    Type: Initial release
  • Version 1.1: 2013-02-20
    Changes: Database references
  • Version 1.2: 2017-07-26
    Changes: Refinement description, Source and taxonomy
  • Version 2.0: 2020-07-29
    Type: Remediation
    Reason: Carbohydrate remediation
    Changes: Atomic model, Data collection, Database references, Derived calculations, Non-polymer description, Structure summary
  • Version 2.1: 2024-02-21
    Changes: Data collection, Database references, Structure summary