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Inhibition of the pneumococcal virulence factor strh and molecular insights into N-glycan recognition and hydrolysis

Analyse Inhibition of the pneumococcal virulence factor strh and molecular insights… in the GL1X research workbench: secondary structure, accessibility, pockets, interfaces, conservation, variants, modifications, peptides, crosslinks and neighbours on the 3D structure.

PDB
2YLA
Type
protein
Length
1,649 residues
Chains
4
Method
x-ray diffraction
Collection
MolNFT v1 / PDB
Contract
0xDE3723766Bc32dcACD03C17BaA400A7B36837Eba
Owner
0x3396CDB397284571d12822B4ae1189a8E22AAAAA
Molecule
Beta-N-acetylhexosaminidase
EC
3.2.1.52
UniProt
P49610
Ligands
NAG, BMA, MAN
Pockets
10 · best druggability 0.83

Structure

x-ray diffraction · 3 distinct chains · 41% helix, 18% strand (DSSP).

ChainMoleculeTypeResiduesSecondary structureUniProt
ABeta-N-acetylhexosaminidase (EC 3.2.1.52)protein41642% helix, 18% strandP49610
BBeta-N-acetylhexosaminidase (EC 3.2.1.52)protein41741% helix, 18% strandP49610
C, DBeta-N-acetylhexosaminidase (EC 3.2.1.52)protein40841% helix, 19% strandP49610

Ligands and binding sites

  • NAG · 2-acetamido-2-deoxy-beta-D-glucopyranose · sugar · 11 copies · chains A, B, C, D
  • BMA · beta-D-mannopyranose · sugar · 4 copies · chains A, B, C, D
  • MAN · alpha-D-mannopyranose · sugar · 4 copies · chains A, B, C, D
  • EDO · 1,2-ethanediol · additive · 15 copies · chains A, D, B, C

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

Pockets

10 pockets found on a 1 Å grid, 3 with a druggability of 0.5 or more.

PocketVolume (ų)DruggabilityBuriednessLining residuesInside
110590.830.8495NAG
210560.820.8393NAG, EDO
37510.670.7550empty
41410.490.7922MAN, NAG
51860.490.7633MAN, NAG

Interfaces

3 interfaces between chains.

  • A–D · 956 Ų buried · 10 hydrogen bonds · protein-protein
  • B–C · 935 Ų buried · 13 hydrogen bonds · protein-protein
  • B–D · 187 Ų buried · 0 hydrogen bonds · protein-protein

Compared structures

  • 2YLA · Inhibition of the pneumococcal virulence factor strh and molecular insights into N-glycan… · the same entry in another collection · chain A against A, TM-score 1.00
  • P49610 · AlphaFold monomer V2.0 prediction for beta-N-acetylhexosaminidase (P49610) · a predicted model of the same protein · chain C against A, TM-score 0.99

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