4J28

Crystal structure of a gh29 alpha-l-fucosidase gh29 from bacteroides thetaiotaomicron in complex with a 5-membered iminocyclitol inhibitor


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.73 Å
  • R-Value Free: 0.194 
  • R-Value Work: 0.171 
  • R-Value Observed: 0.172 

Starting Model: experimental
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Literature

Three dimensional structure of a bacterial alpha-l-fucosidase with a 5-membered iminocyclitol inhibitor.

Wright, D.W.Moreno-Vargas, A.J.Carmona, A.T.Robina, I.Davies, G.J.

(2013) Bioorg Med Chem 21: 4751-4754

  • DOI: https://doi.org/10.1016/j.bmc.2013.05.056
  • Primary Citation of Related Structures:  
    4J27, 4J28

  • PubMed Abstract: 

    Fucosidases, enzymes that cleave fucose from the non-reducing end of a glycan, represent promising medicinal targets reflecting their roles in cancer metastasis, inflammation, host-parasite interactions and the lysosomal storage disorder fucosidosis. The X-ray crystal structures of Bacteroides thetaiotaomicron GH29 α-l-fucosidase (BtFuc2970) in a new crystal form (at a resolution of 1.59Å) and liganded with a 5-membered iminocyclitol inhibitor (1.73Å) are reported herein. The 5-membered iminocyclitol binds in a (3)E conformation, mimicking the proposed (3)H4 half chair transition-state of the enzyme catalysed reaction, and its Ki for BtFuc2970 was determined as 2μM. Structural analysis of fucosidase inhibition through 5-membered iminocyclitols will aid in the rational design of more potent fucosidase inhibitors for treatment of a range of medical conditions.


  • Organizational Affiliation

    Structural Biology Laboratory, Department of Chemistry, University of York, York YO10 5DD, United Kingdom.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Alpha-L-fucosidase
A, B
450Bacteroides thetaiotaomicron VPI-5482Mutation(s): 0 
UniProt
Find proteins for Q8A3I4 (Bacteroides thetaiotaomicron (strain ATCC 29148 / DSM 2079 / JCM 5827 / CCUG 10774 / NCTC 10582 / VPI-5482 / E50))
Explore Q8A3I4 
Go to UniProtKB:  Q8A3I4
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ8A3I4
Sequence Annotations
Expand
  • Reference Sequence
Small Molecules
Ligands 4 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
EAT
Query on EAT

Download Ideal Coordinates CCD File 
C [auth A],
M [auth B]
(2S,3S,4R,5S)-2-(1H-benzimidazol-2-yl)-5-methylpyrrolidine-3,4-diol
C12 H15 N3 O2
WKDUAKZZRFRSAE-HCPDIIQCSA-N
SO4
Query on SO4

Download Ideal Coordinates CCD File 
I [auth A],
J [auth A],
K [auth A],
O [auth B]
SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L
GOL
Query on GOL

Download Ideal Coordinates CCD File 
L [auth A],
P [auth B]
GLYCEROL
C3 H8 O3
PEDCQBHIVMGVHV-UHFFFAOYSA-N
IMD
Query on IMD

Download Ideal Coordinates CCD File 
D [auth A]
E [auth A]
F [auth A]
G [auth A]
H [auth A]
D [auth A],
E [auth A],
F [auth A],
G [auth A],
H [auth A],
N [auth B]
IMIDAZOLE
C3 H5 N2
RAXXELZNTBOGNW-UHFFFAOYSA-O
Binding Affinity Annotations 
IDSourceBinding Affinity
EAT PDBBind:  4J28 Ki: 2000 (nM) from 1 assay(s)
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.73 Å
  • R-Value Free: 0.194 
  • R-Value Work: 0.171 
  • R-Value Observed: 0.172 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 68.728α = 90
b = 95.611β = 91.21
c = 96.988γ = 90
Software Package:
Software NamePurpose
SCALAdata scaling
REFMACrefinement
PDB_EXTRACTdata extraction
XSCALEdata scaling
REFMACphasing

Structure Validation

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Ligand Structure Quality Assessment 


Entry History 

Deposition Data

  • Released Date: 2013-05-08 
  • Deposition Author(s): Wright, D.W.

Revision History  (Full details and data files)

  • Version 1.0: 2013-05-08
    Type: Initial release
  • Version 1.1: 2013-08-28
    Changes: Database references
  • Version 1.2: 2023-09-20
    Changes: Data collection, Database references, Derived calculations, Refinement description