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Structural investigations of the substrate specificity of human O- glcnacase

Analyse Structural investigations of the substrate specificity of human O- glcnacase in the GL1X research workbench: secondary structure, accessibility, pockets, interfaces, conservation, variants, modifications, peptides, crosslinks and neighbours on the 3D structure.

PDB
5VVT
Type
protein
Length
848 residues
Chains
4
Method
x-ray diffraction
Collection
MolNFT v1 / PDB
Contract
0xDE3723766Bc32dcACD03C17BaA400A7B36837Eba
Owner
0x3396CDB397284571d12822B4ae1189a8E22AAAAA
Molecule
Protein O-glcnacase; ELK1 peptide
EC
3.2.1.169, 3.2.1.-
UniProt
O60502
Ligands
NAG
Pockets
9 · best druggability 0.81

Structure

x-ray diffraction · 4 distinct chains · 49% helix, 10% strand (DSSP).

ChainMoleculeTypeResiduesSecondary structureUniProt
AProtein O-glcnacase (EC 3.2.1.169, 3.2.1.-)protein41949% helix, 10% strandO60502
BELK1 peptideprotein20% helix, 0% strand—
CProtein O-glcnacase (EC 3.2.1.169, 3.2.1.-)protein42350% helix, 10% strandO60502
DELK1 peptideprotein40% helix, 0% strand—

Ligands and binding sites

  • NAG · 2-acetamido-2-deoxy-beta-D-glucopyranose · sugar · 2 copies · chains A, B, C, D

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

Pockets

9 pockets found on a 1 Å grid, 4 with a druggability of 0.5 or more.

PocketVolume (ų)DruggabilityBuriednessLining residuesInside
19870.810.8381empty
2590.710.9723NAG
3590.660.9517empty
42310.600.8039NAG
51920.470.7521empty

Interfaces

5 interfaces between chains.

  • A–C · 3625 Ų buried · 33 hydrogen bonds · protein-protein
  • C–D · 282 Ų buried · 2 hydrogen bonds · protein-protein
  • A–B · 167 Ų buried · 3 hydrogen bonds · protein-protein
  • B–C · 135 Ų buried · 0 hydrogen bonds · protein-protein
  • A–D · 98 Ų buried · 0 hydrogen bonds · protein-protein

Modifications

Observed in the structure: 2 glycan (O-glycosylation).

Compared structures

  • 5VVT · Structural Investigations of the Substrate Specificity of Human O-GlcNAcase · the same entry in another collection · chain A against A, TM-score 1.00
  • O60502 · AlphaFold monomer V2.0 prediction for protein O-glcnacase (O60502) · a predicted model of the same protein · chain C against A, TM-score 0.96

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