ISDA

Entry Detail

PDB ID:

4GIZ

Keywords:

Title:

Crystal structure of full-length human papillomavirus oncoprotein E6 in complex with LXXLL peptide of ubiquitin ligase E6AP at 2.55 A resolution

Biological Source:

Source Organism:

Escherichia coli, HOMO SAPIENS, Human papillomavirus type 16

Host Organism:

Escherichia coli

PDB Version:

Deposition Date:

2012-08-09

Release Date:

2013-01-23

Method Details:

Experimental Method:

X-RAY DIFFRACTION

Resolution:

2.55 Å

R-Value Free:

0.19

R-Value Work:

0.16

R-Value Observed:

0.16

Space Group:

P 21 21 21

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Macromolecular Entities

Protein Blast

Polymer Type:polypeptide(L)
Description:Maltose-binding periplasmic protein, UBIQUITIN LIGASE EA6P: chimeric protein
Mutations:D83A,K84A,K240A,E360A,D364A,K363A
Chain IDs:A, B
Chain Length:382
Number of Molecules:2
Biological Source:Escherichia coli, HOMO SAPIENS

UniProt ID:P0AEX9 Pfam ID:PF01547

Protein Blast

Polymer Type:polypeptide(L)
Description:Protein E6
Mutations:F47R,C80S,C97S,C111S,C140S
Chain IDs:C, D
Chain Length:142
Number of Molecules:2
Biological Source:Human papillomavirus type 16

UniProt ID:P03126 Pfam ID:PF00518

Ligand Molecules

Peptide-like Molecules

PRD_900035

Primary Citation

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.Show

Science 339 694 698 (2013)

PMID: 23393263 DOI: 10.1126/science.1229934

Abstact

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.

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Primary Citation of related structures