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Crystal structure of the non-neutralizing HIV antibody 13H11 Fab fragment with a GP41 mper-derived peptide bearing ala substitutions in a helical conformation

Analyse Crystal structure of the non-neutralizing HIV antibody 13H11 Fab fragment with… in the GL1X research workbench: secondary structure, accessibility, pockets, interfaces, conservation, variants, modifications, peptides, crosslinks and neighbours on the 3D structure.

PDB
3MNZ
Type
protein
Length
441 residues
Chains
3
Method
x-ray diffraction
Collection
MolNFT v1 / PDB
Contract
0xDE3723766Bc32dcACD03C17BaA400A7B36837Eba
Owner
0x3396CDB397284571d12822B4ae1189a8E22AAAAA
Molecule
GP41 mper-derived peptide; Anti-HIV-1 antibody 13H11 light chain; Anti-HIV-1 antibody…
UniProt
Q8TCD0, S6B291
Ligands
NA, NH2
Pockets
5 · best druggability 0.58

Structure

x-ray diffraction · 3 distinct chains · 10% helix, 50% strand (DSSP).

ChainMoleculeTypeResiduesSecondary structureUniProt
PGP41 mper-derived peptideprotein1669% helix, 6% strand—
AAnti-HIV-1 antibody 13H11 light chainprotein2206% helix, 51% strandQ8TCD0
BAnti-HIV-1 antibody 13H11 heavy chainprotein20510% helix, 53% strandS6B291

Ligands and binding sites

  • NA · Sodium ion · metal · chains B
  • NH2 · Amino group · ion · chains P

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

Pockets

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

PocketVolume (ų)DruggabilityBuriednessLining residuesInside
1560.580.9118empty
23700.560.7449empty
3940.370.7617empty
41290.370.7327empty
5570.290.7513empty

Interfaces

3 interfaces between chains.

  • A–B · 1521 Ų buried · 6 hydrogen bonds · protein-protein
  • P–B · 420 Ų buried · 11 hydrogen bonds · protein-protein
  • P–A · 290 Ų buried · 2 hydrogen bonds · protein-protein

Modifications

Observed in the structure: 4 disulfide (disulfide).

Compared structures

  • 3MNZ · Crystal structure of the non-neutralizing HIV antibody 13H11 Fab fragment with a gp41… · the same entry in another collection · chain P against P, TM-score 1.00

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