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Structure of Influenza Hemagglutinin ectodomain (A/duck/Alberta/35/76) in complex with FISW84 Fab Fragment

Analyse Structure of Influenza Hemagglutinin ectodomain (A/duck/Alberta/35/76) in… in the GL1X research workbench: secondary structure, accessibility, pockets, interfaces, conservation, variants, modifications, peptides, crosslinks and neighbours on the 3D structure.

PDB
6HJP
Type
protein
Length
2,784 residues
Chains
12
Method
electron microscopy
Collection
MolNFT v2 / PDB Bank
Contract
0xd58B01f6C18086e5202cdC5D7Ad3E41790360102
Owner
0xF4e1AA6f26B7DA48EeAD9B24a97927303eeA07b8
Resolution
3.3
Source
Homo sapiens; Influenza A virus (strain A/Duck/Alberta/35/1976 H1N1)
Molecule
Hemagglutinin; Heavy chain of FISW84 Fab Fragment; Light chain of FISW84 Fab Fragment
UniProt
Q9WCE0, P26562
Ligands
UPL, NAG, BMA, MAN, FUC
Pockets
20 · best druggability 0.87

Structure

electron microscopy · resolution 3.3 · 4 distinct chains · 16% helix, 36% strand (DSSP).

ChainMoleculeTypeResiduesSecondary structureUniProt
A, C, EHemagglutininprotein3248% helix, 34% strandQ9WCE0
B, D, FHemagglutininprotein17457% helix, 6% strandP26562
G, I, KHeavy chain of FISW84 Fab Fragmentprotein2164% helix, 49% strand—
H, J, LLight chain of FISW84 Fab Fragmentprotein2146% helix, 49% strand—

Ligands and binding sites

  • UPL · Unknown branched fragment of phospholipid · ligand · 3 copies · chains A, B, C, D, E, F
  • NAG · 2-acetamido-2-deoxy-beta-D-glucopyranose · sugar · 30 copies · chains A, B, C, D, E, F
  • BMA · beta-D-mannopyranose · sugar · 9 copies
  • MAN · alpha-D-mannopyranose · sugar · 6 copies
  • FUC · alpha-L-fucopyranose · sugar · 3 copies · chains A, C, E

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

Pockets

20 pockets found on a 1 Å grid, 17 with a druggability of 0.5 or more.

PocketVolume (ų)DruggabilityBuriednessLining residuesInside
15390.870.9388empty
23570.790.8955empty
37750.760.8176empty
43440.760.8754empty
55070.760.8467empty

Interfaces

30 interfaces between chains.

  • C–D · 2737 Ų buried · 31 hydrogen bonds · protein-protein
  • E–F · 2730 Ų buried · 31 hydrogen bonds · protein-protein
  • A–B · 2725 Ų buried · 32 hydrogen bonds · protein-protein
  • K–L · 1788 Ų buried · 5 hydrogen bonds · protein-protein
  • I–J · 1731 Ų buried · 5 hydrogen bonds · protein-protein

Modifications

Observed in the structure: 30 disulfide, 15 glycan (disulfide, N-glycosylation).

Compared structures

  • 6HJP · Structure of influenza hemagglutinin ectodomain (A/DUCK/ALBERTA/35/76) in complex with… · the same entry in another collection · chain A against A, TM-score 1.00

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