2QWJ

THE X-RAY STRUCTURE OF A COMPLEX OF 5-N-ACETYL-4-AMINO-6-DIETHYLCARBOXAMIDE-4,5-DIHYDRO-2H-PYRAN-2-CARBOXYLIC ACID AND A DRUG RESISTANT VARIANT R292K OF TERN N9 INFLUENZA VIRUS NEURAMINIDASE


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2 Å
  • R-Value Work: 0.177 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Drug design against a shifting target: a structural basis for resistance to inhibitors in a variant of influenza virus neuraminidase.

Varghese, J.N.Smith, P.W.Sollis, S.L.Blick, T.J.Sahasrabudhe, A.McKimm-Breschkin, J.L.Colman, P.M.

(1998) Structure 6: 735-746

  • Primary Citation of Related Structures:  2QWA, 2QWB, 2QWC, 2QWD, 2QWE, 2QWF, 2QWG, 2QWH, 2QWI, 2QWK

  • PubMed Abstract: 
  • Inhibitors of the influenza virus neuraminidase have been shown to be effective antiviral agents in humans. Several studies have reported the selection of novel influenza strains when the virus is cultured with neuraminidase inhibitors in vitro. Thes ...

    Inhibitors of the influenza virus neuraminidase have been shown to be effective antiviral agents in humans. Several studies have reported the selection of novel influenza strains when the virus is cultured with neuraminidase inhibitors in vitro. These resistant viruses have mutations either in the neuraminidase or in the viral haemagglutinin. Inhibitors in which the glycerol sidechain at position 6 of 2-deoxy-2,3-dehydro-N-acetylneuraminic acid (Neu5Ac2en) has been replaced by carboxamide-linked hydrophobic substituents have recently been reported and shown to select neuraminidase variants. This study seeks to clarify the structural and functional consequences of replacing the glycerol sidechain of the inhibitor with other chemical constituents.


    Related Citations: 
    • Mutations in a Conserved Residue in the Influenza Virus Neuraminidase Active Site Decreases Sensitivity to Neu5Ac2En-Derived Inhibitors
      Mckimm-Breschkin, J.L.,Sahasrabudhe, A.,Blick, T.J.,Mcdonald, M.,Colman, P.M.,Hart, G.J.,Bethell, R.C.,Varghese, J.N.
      (1998) J.Virol. 72: 2456


    Organizational Affiliation

    Biomolecular Research Institute 343 Royal Parade, Parkville, 3052, Australia. jose.varghese@bioresi.com.au




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
NEURAMINIDASE
A
388Influenza A virus (strain A/Tern/Australia/G70C/1975 H11N9)Gene Names: NA
EC: 3.2.1.18
Find proteins for P03472 (Influenza A virus (strain A/Tern/Australia/G70C/1975 H11N9))
Go to UniProtKB:  P03472
Small Molecules
Ligands 5 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
G28
Query on G28

Download SDF File 
Download CCD File 
A
5-N-ACETYL-4-AMINO-6-DIETHYLCARBOXAMIDE-4,5-DIHYDRO-2H-PYRAN-2-CARBOXYLIC ACID
C13 H23 N3 O5
BULFTXGJKXVMER-LNFKQOIKSA-N
 Ligand Interaction
CA
Query on CA

Download SDF File 
Download CCD File 
A
CALCIUM ION
Ca
BHPQYMZQTOCNFJ-UHFFFAOYSA-N
 Ligand Interaction
MAN
Query on MAN

Download SDF File 
Download CCD File 
A
ALPHA-D-MANNOSE
C6 H12 O6
WQZGKKKJIJFFOK-PQMKYFCFSA-N
 Ligand Interaction
BMA
Query on BMA

Download SDF File 
Download CCD File 
A
BETA-D-MANNOSE
C6 H12 O6
WQZGKKKJIJFFOK-RWOPYEJCSA-N
 Ligand Interaction
NAG
Query on NAG

Download SDF File 
Download CCD File 
A
N-ACETYL-D-GLUCOSAMINE
C8 H15 N O6
OVRNDRQMDRJTHS-FMDGEEDCSA-N
 Ligand Interaction
External Ligand Annotations 
IDBinding Affinity (Sequence Identity %)
G28IC50: 230 nM BINDINGMOAD
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2 Å
  • R-Value Work: 0.177 
  • Space Group: I 4 3 2
Unit Cell:
Length (Å)Angle (°)
a = 180.860α = 90.00
b = 180.860β = 90.00
c = 180.860γ = 90.00
Software Package:
Software NamePurpose
R-AXISIIdata collection
PROTEINdata reduction
X-PLORmodel building
X-PLORrefinement
PROTEINdata scaling
X-PLORphasing
R-AXISdata reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

  • Deposited Date: 1998-04-07 
  • Released Date: 1998-11-11 
  • Deposition Author(s): Varghese, J.N.

Revision History 

  • Version 1.0: 1998-11-11
    Type: Initial release
  • Version 1.1: 2008-03-03
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Non-polymer description, Version format compliance