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Crystal structure of a group 2 ha binding antibody AF4H1K1 Fab in complex with the 1968 H3N2 pandemic (H3-AC/68) hemagglutinin

Analyse Crystal structure of a group 2 ha binding antibody AF4H1K1 Fab in complex with… in the GL1X research workbench: secondary structure, accessibility, pockets, interfaces, conservation, variants, modifications, peptides, crosslinks and neighbours on the 3D structure.

PDB
5Y2L
Type
protein
Length
916 residues
Chains
4
Method
x-ray diffraction
Collection
MolNFT v1 / PDB
Contract
0xDE3723766Bc32dcACD03C17BaA400A7B36837Eba
Owner
0x3396CDB397284571d12822B4ae1189a8E22AAAAA
Molecule
Hemagglutinin; A group 2 ha binding antibody AF4H1K1 Fab heavy chain; A group 2 ha…
UniProt
P03437
Ligands
NAG
Pockets
8 · best druggability 0.58

Structure

x-ray diffraction · 4 distinct chains · 15% helix, 40% strand (DSSP).

ChainMoleculeTypeResiduesSecondary structureUniProt
AHemagglutininprotein3179% helix, 41% strandP03437
BHemagglutininprotein16354% helix, 13% strandP03437
IA group 2 ha binding antibody AF4H1K1 Fab heavy chainprotein2247% helix, 48% strand—
JA group 2 ha binding antibody AF4H1K1 Fab light chainprotein2124% helix, 51% strand—

Ligands and binding sites

  • NAG · 2-acetamido-2-deoxy-beta-D-glucopyranose · sugar · 6 copies · chains A, I

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

Pockets

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

PocketVolume (ų)DruggabilityBuriednessLining residuesInside
11890.580.8129empty
21280.500.8028empty
32280.490.7534empty
41390.450.7726empty
51010.450.7919empty

Interfaces

5 interfaces between chains.

  • A–B · 2830 Ų buried · 36 hydrogen bonds · protein-protein
  • I–J · 1831 Ų buried · 11 hydrogen bonds · protein-protein
  • B–I · 579 Ų buried · 9 hydrogen bonds · protein-protein
  • A–I · 479 Ų buried · 1 hydrogen bond · protein-protein
  • B–J · 95 Ų buried · 0 hydrogen bonds · protein-protein

Modifications

Observed in the structure: 10 disulfide, 4 glycan (disulfide, N-glycosylation).

Compared structures

  • 5Y2L · Crystal structure of a group 2 HA binding antibody AF4H1K1 Fab in complex with the 1968… · the same entry in another collection · chain A against A, TM-score 1.00

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