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Crystal structure of human 4E10 Fab in complex with its peptide epitope on HIV-1 GP41: crystals cryoprotected with phosphatidic acid (08:0 pa)

Analyse Crystal structure of human 4E10 Fab in complex with its peptide epitope on… in the GL1X research workbench: secondary structure, accessibility, pockets, interfaces, conservation, variants, modifications, peptides, crosslinks and neighbours on the 3D structure.

PDB
4XAW
Type
protein
Length
445 residues
Chains
3
Method
x-ray diffraction
Collection
MolNFT v1 / PDB
Contract
0xDE3723766Bc32dcACD03C17BaA400A7B36837Eba
Owner
0x3396CDB397284571d12822B4ae1189a8E22AAAAA
Molecule
4E10 Fab light chain; 4E10 Fab heavy chain; Fragment of HIV glycoprotein (GP41) including…
Ligands
UNL
Pockets
4 · best druggability 0.58

Structure

x-ray diffraction · 3 distinct chains · 11% helix, 50% strand (DSSP).

ChainMoleculeTypeResiduesSecondary structureUniProt
L4E10 Fab light chainprotein2147% helix, 50% strand—
H4E10 Fab heavy chainprotein2158% helix, 55% strand—
PFragment of HIV glycoprotein (GP41) including the mper region 671-683protein1688% helix, 0% strand—

Ligands and binding sites

  • UNL · Unknown ligand · ligand · 2 copies · chains L, H

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

Pockets

4 pockets found on a 1 Å grid, 2 with a druggability of 0.5 or more.

PocketVolume (ų)DruggabilityBuriednessLining residuesInside
14600.580.7458UNL
2560.530.8822empty
3800.400.7818empty
4550.260.739empty

Interfaces

3 interfaces between chains.

  • L–H · 1643 Ų buried · 16 hydrogen bonds · protein-protein
  • H–P · 576 Ų buried · 3 hydrogen bonds · protein-protein
  • L–P · 216 Ų buried · 6 hydrogen bonds · protein-protein

Modifications

Observed in the structure: 4 disulfide (disulfide).

Compared structures

  • 4XAW · Crystal structure of human 4E10 Fab in complex with its peptide epitope on HIV-1 gp41… · the same entry in another collection · chain L against L, TM-score 1.00

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