4FOQ

Crystal structure of the NanB sialidase from streptococcus pneumoniae in complex with 2-aminoethanesulfonic acid


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.99 Å
  • R-Value Free: 0.224 
  • R-Value Work: 0.179 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Synthesis and structural characterisation of selective non-carbohydrate-based inhibitors of bacterial sialidases.

Brear, P.Telford, J.Taylor, G.L.Westwood, N.J.

(2012) Chembiochem 13: 2374-2383

  • DOI: 10.1002/cbic.201200433
  • Primary Citation of Related Structures:  4FOV, 4FOW, 4FOY, 4FP2, 4FP3, 4FPC, 4FPE, 4FPF, 4FPG, 4FPH, 4FPJ, 4FPK, 4FPL, 4FPO, 4FPY, 4FQ4

  • PubMed Abstract: 
  • The major human pathogen Streptococcus pneumoniae plays a key role in several disease states including septicaemia, meningitis and community-acquired pneumonia. Although vaccines against S. pneumoniae are available as prophylactics, there remains a n ...

    The major human pathogen Streptococcus pneumoniae plays a key role in several disease states including septicaemia, meningitis and community-acquired pneumonia. Although vaccines against S. pneumoniae are available as prophylactics, there remains a need to identify and characterise novel chemical entities that can treat the diseases caused by this pathogen. S. pneumoniae expresses three sialidases, enzymes that cleave sialic acid from carbohydrate-based surface molecules. Two of these enzymes, NanA and NanB, have been implicated in the pathogenesis of S. pneumoniae and are considered to be validated drug targets. Here we report our studies on the synthesis and structural characterisation of novel NanB-selective inhibitors that are inspired by the β-amino-sulfonic acid family of buffers.


    Organizational Affiliation

    Biomedical Sciences Research Complex, University of St Andrews, North Haugh, St Andrews, Fife, KY16 9ST, UK.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Sialidase B
A
697Streptococcus pneumoniae serotype 4 (strain ATCC BAA-334 / TIGR4)Gene Names: nanB
EC: 3.2.1.18
Find proteins for Q54727 (Streptococcus pneumoniae serotype 4 (strain ATCC BAA-334 / TIGR4))
Go to UniProtKB:  Q54727
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
DMS
Query on DMS

Download SDF File 
Download CCD File 
A
DIMETHYL SULFOXIDE
C2 H6 O S
IAZDPXIOMUYVGZ-UHFFFAOYSA-N
 Ligand Interaction
TAU
Query on TAU

Download SDF File 
Download CCD File 
A
2-AMINOETHANESULFONIC ACID
C2 H7 N O3 S
XOAAWQZATWQOTB-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.99 Å
  • R-Value Free: 0.224 
  • R-Value Work: 0.179 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 76.226α = 90.00
b = 82.528β = 90.00
c = 116.462γ = 90.00
Software Package:
Software NamePurpose
PHASERphasing
SCALEPACKdata scaling
PDB_EXTRACTdata extraction
StructureStudiodata collection
PHENIXrefinement
DENZOdata reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

  • Deposited Date: 2012-06-21 
  • Released Date: 2012-10-31 
  • Deposition Author(s): Brear, P.

Revision History 

  • Version 1.0: 2012-10-31
    Type: Initial release
  • Version 1.1: 2012-11-14
    Type: Database references