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Crystal structure of the HPV16 E6/E6AP/P53 ternary complex at 2.25 a resolution

Analyse Crystal structure of the HPV16 E6/E6AP/P53 ternary complex at 2.25 a resolution in the GL1X research workbench: secondary structure, accessibility, pockets, interfaces, conservation, variants, modifications, peptides, crosslinks and neighbours on the 3D structure.

PDB
4XR8
Type
protein
Length
1,456 residues
Chains
6
Method
x-ray diffraction
Collection
MolNFT v1 / PDB
Contract
0xDE3723766Bc32dcACD03C17BaA400A7B36837Eba
Owner
0x3396CDB397284571d12822B4ae1189a8E22AAAAA
Molecule
Maltose-binding periplasmic protein, ubiquitin ligase E6AP; Cellular tumor antigen P53…
UniProt
P0AEX9, P04637, P03126
Ligands
GLC, ZN
Pockets
15 · best druggability 0.83

Structure

x-ray diffraction · 5 distinct chains · 36% helix, 22% strand (DSSP).

ChainMoleculeTypeResiduesSecondary structureUniProt
AMaltose-binding periplasmic protein, ubiquitin ligase E6APprotein38344% helix, 20% strandP0AEX9
BMaltose-binding periplasmic protein, ubiquitin ligase E6APprotein38143% helix, 20% strandP0AEX9
C, DCellular tumor antigen P53protein19910% helix, 33% strandP04637
FProtein E6protein14336% helix, 19% strandP03126
HProtein E6protein15134% helix, 18% strandP03126

Ligands and binding sites

  • GLC · alpha-D-glucopyranose · sugar · 4 copies · chains A, B
  • ZN · Zinc ion · metal · 6 copies · chains C, D, F, H
  • PEG · Di(hydroxyethyl)ether · additive · 4 copies · chains A, H, B, D, F
  • EDO · 1,2-ethanediol · additive · chains C, F

Binding sites are the residues within 4.5 Å of a ligand's heavy atoms.

Pockets

15 pockets found on a 1 Å grid, 12 with a druggability of 0.5 or more.

PocketVolume (ų)DruggabilityBuriednessLining residuesInside
111090.830.84118empty
27830.790.8388empty
33830.770.8757empty
42430.730.8729GLC
54090.730.8348empty

Interfaces

10 interfaces between chains.

  • D–H · 1245 Ų buried · 14 hydrogen bonds · protein-protein
  • C–F · 1195 Ų buried · 15 hydrogen bonds · protein-protein
  • A–F · 1158 Ų buried · 20 hydrogen bonds · protein-protein
  • B–H · 1113 Ų buried · 19 hydrogen bonds · protein-protein
  • A–C · 415 Ų buried · 2 hydrogen bonds · protein-protein

Compared structures

  • 4XR8 · Crystal structure of the HPV16 E6/E6AP/p53 ternary complex at 2.25 A resolution · the same entry in another collection · chain A against A, TM-score 1.00

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