4C1W

Carbohydrate binding domain from Streptococcus pneumoniae NanA sialidase complexed with 3'-sialyllactose


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.84 Å
  • R-Value Free: 0.198 
  • R-Value Work: 0.143 

wwPDB Validation 3D Report Full Report


This is version 1.0 of the entry. See complete history

Literature

Prevention of Influenza by Targeting Host Receptors Using Engineered Proteins.

Connaris, H.Govorkova, E.A.Ligertwood, Y.Dutia, B.M.Yang, L.Tauber, S.Taylor, M.A.Alias, N.Hagan, R.Nash, A.A.Webster, R.G.Taylor, G.L.

(2014) Proc.Natl.Acad.Sci.USA 111: 6401

  • DOI: 10.1073/pnas.1404205111

  • PubMed Abstract: 
  • There is a need for new approaches for the control of influenza given the burden caused by annual seasonal outbreaks, the emergence of viruses with pandemic potential, and the development of resistance to current antiviral drugs. We show that multiva ...

    There is a need for new approaches for the control of influenza given the burden caused by annual seasonal outbreaks, the emergence of viruses with pandemic potential, and the development of resistance to current antiviral drugs. We show that multivalent biologics, engineered using carbohydrate-binding modules specific for sialic acid, mask the cell-surface receptor recognized by the influenza virus and protect mice from a lethal challenge with 2009 pandemic H1N1 influenza virus. The most promising biologic protects mice when given as a single 1-μg intranasal dose 7 d in advance of viral challenge. There also is sufficient virus replication to establish an immune response, potentially protecting the animal from future exposure to the virus. Furthermore, the biologics appear to stimulate inflammatory mediators, and this stimulation may contribute to their protective ability. Our results suggest that this host-targeted approach could provide a front-line prophylactic that has the potential to protect against any current and future influenza virus and possibly against other respiratory pathogens that use sialic acid as a receptor.


    Organizational Affiliation

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




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
NEURAMINIDASE
A
188Streptococcus pneumoniaeMutation(s): 0 
Gene Names: nanA
Find proteins for Q4LB86 (Streptococcus pneumoniae)
Go to UniProtKB:  Q4LB86
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
TRS
Query on TRS

Download SDF File 
Download CCD File 
A
2-AMINO-2-HYDROXYMETHYL-PROPANE-1,3-DIOL
TRIS BUFFER
C4 H12 N O3
LENZDBCJOHFCAS-UHFFFAOYSA-O
 Ligand Interaction
SLT
Query on SLT

Download SDF File 
Download CCD File 
A
5-(ACETYLAMINO)-3,5-DIDEOXYNON-2-ULOPYRANONOSYL-(2->3)-BETA-D-LYXO-HEXOPYRANOSYL-(1->4)HEXOPYRANOSE
LACTOSE SIALIC ACID; ALPHA(2,3) SIALYL LACTOSE
C23 H39 N O19
CILYIEBUXJIHCO-LPTWSRJFSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.84 Å
  • R-Value Free: 0.198 
  • R-Value Work: 0.143 
  • Space Group: P 1 21 1
Unit Cell:
Length (Å)Angle (°)
a = 42.567α = 90.00
b = 44.517β = 97.00
c = 42.982γ = 90.00
Software Package:
Software NamePurpose
HKL-2000data reduction
REFMACrefinement
SCALEPACKdata scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2014-08-27
    Type: Initial release