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Crystal structure of the nanb sialidase from streptococcus pneumoniae in complex with 4-acetamido-2-fluoro-3-hydroxy-6-[1,2- dihydroxyethyl]-7,8-DIOXABICYCLO[3.2.1]OCTANE-1-carboxylic acid

Analyse Crystal structure of the nanb sialidase from streptococcus pneumoniae in… in the GL1X research workbench: secondary structure, accessibility, pockets, interfaces, conservation, variants, modifications, peptides, crosslinks and neighbours on the 3D structure.

PDB
4XJU
Type
protein
Length
658 residues
Chains
1
Method
x-ray diffraction
Collection
MolNFT v1 / PDB
Contract
0xDE3723766Bc32dcACD03C17BaA400A7B36837Eba
Owner
0x3396CDB397284571d12822B4ae1189a8E22AAAAA
Molecule
Sialidase B
EC
3.2.1.18
UniProt
Q54727
Ligands
19D, PO4
Pockets
6 · best druggability 0.63

Structure

x-ray diffraction · 1 distinct chain · 3% helix, 45% strand (DSSP).

ChainMoleculeTypeResiduesSecondary structureUniProt
ASialidase B (EC 3.2.1.18)protein6583% helix, 45% strandQ54727

Ligands and binding sites

  • 19D · (1R,2R,3R,4R,5R,7R)-2-(acetylamino)-7-[(1R)-1,2-dihydroxyethyl]-4-fluoro-3-hydroxy-6,8-dioxabicyclo[3.2.1]octane-5-carboxylic acid · ligand · chains A
  • PO4 · Phosphate ion · ion · chains A
  • DMS · Dimethyl sulfoxide · additive · 4 copies · chains A

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

Pockets

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

PocketVolume (ų)DruggabilityBuriednessLining residuesInside
12790.630.8125DMS
22710.610.803419D
32050.510.7731DMS
41920.480.7526empty
5600.370.7915empty

Compared structures

  • 4XJU · Crystal structure of the NanB sialidase from streptococcus pneumoniae in complex with… · the same entry in another collection · chain A against A, TM-score 1.00
  • Q54727 · AlphaFold monomer V2.0 prediction for sialidase B (Q54727) · a predicted model of the same protein · chain A against A, TM-score 1.00

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