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Crystal structure of broadly and potently neutralizing antibody vrc- CH31 in complex with HIV-1 clade A/E GP120 93TH057 with loop D and loop V5 from clade a strain 3415_V1_C1

Analyse Crystal structure of broadly and potently neutralizing antibody vrc- CH31 in… in the GL1X research workbench: secondary structure, accessibility, pockets, interfaces, conservation, variants, modifications, peptides, crosslinks and neighbours on the 3D structure.

PDB
4LSQ
Type
protein
Length
775 residues
Chains
3
Method
x-ray diffraction
Collection
MolNFT v1 / PDB
Contract
0xDE3723766Bc32dcACD03C17BaA400A7B36837Eba
Owner
0x3396CDB397284571d12822B4ae1189a8E22AAAAA
Molecule
Envelope glycoprotein GP120 with loop D and V5 from strain 3415_V1_C1; Heavy chain of…
Ligands
NAG, CD, NA, CL
Pockets
9 · best druggability 0.77

Structure

x-ray diffraction · 3 distinct chains · 10% helix, 44% strand (DSSP).

ChainMoleculeTypeResiduesSecondary structureUniProt
GEnvelope glycoprotein GP120 with loop D and V5 from strain 3415_V1_C1protein34416% helix, 37% strand—
HHeavy chain of antibody vrc-CH31protein2225% helix, 47% strand—
LLight chain of antibody vrc-CH31 with N70D mutationprotein2096% helix, 52% strand—

Ligands and binding sites

  • NAG · 2-acetamido-2-deoxy-beta-D-glucopyranose · sugar · 9 copies · chains G, L
  • CD · Cadmium ion · metal · 5 copies · chains G, H, L
  • NA · Sodium ion · metal · 4 copies · chains G, H
  • CL · Chloride ion · ion · 3 copies · chains G, H
  • BU3 · (R,R)-2,3-butanediol · additive · chains G, H

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

Pockets

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

PocketVolume (ų)DruggabilityBuriednessLining residuesInside
17590.770.8183BU3, NA, CD, CL
22130.590.8133NAG
33970.580.7551empty
4680.570.8819NAG
52350.560.7829empty

Interfaces

3 interfaces between chains.

  • H–L · 1731 Ų buried · 21 hydrogen bonds · protein-protein
  • G–H · 708 Ų buried · 16 hydrogen bonds · protein-protein
  • G–L · 345 Ų buried · 5 hydrogen bonds · protein-protein

Modifications

Observed in the structure: 11 disulfide, 9 glycan (disulfide, N-glycosylation).

Compared structures

  • 4LSQ · Crystal structure of broadly and potently neutralizing antibody VRC-CH31 in complex with… · the same entry in another collection · chain G against G, TM-score 1.00

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