3TIA

Crystal structure of 1957 pandemic H2N2 neuraminidase complexed with laninamivir


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.8 Å
  • R-Value Free: 0.170 
  • R-Value Work: 0.152 

wwPDB Validation 3D Report Full Report


This is version 1.0 of the entry. See complete history

Literature

Structural and functional analysis of laninamivir and its octanoate prodrug reveals group specific mechanisms for influenza NA inhibition

Vavricka, C.J.Li, Q.Wu, Y.Qi, J.Wang, M.Liu, Y.Gao, F.Liu, J.Feng, E.He, J.Wang, J.Liu, H.Jiang, H.Gao, G.F.

(2011) Plos Pathog. 7: e1002249-e1002249

  • DOI: 10.1371/journal.ppat.1002249
  • Primary Citation of Related Structures:  3TI3, 3TI4, 3TI5, 3TI6, 3TI8, 3TIB, 3TIC

  • PubMed Abstract: 
  • The 2009 H1N1 influenza pandemic (pH1N1) led to record sales of neuraminidase (NA) inhibitors, which has contributed significantly to the recent increase in oseltamivir-resistant viruses. Therefore, development and careful evaluation of novel NA inhi ...

    The 2009 H1N1 influenza pandemic (pH1N1) led to record sales of neuraminidase (NA) inhibitors, which has contributed significantly to the recent increase in oseltamivir-resistant viruses. Therefore, development and careful evaluation of novel NA inhibitors is of great interest. Recently, a highly potent NA inhibitor, laninamivir, has been approved for use in Japan. Laninamivir is effective using a single inhaled dose via its octanoate prodrug (CS-8958) and has been demonstrated to be effective against oseltamivir-resistant NA in vitro. However, effectiveness of laninamivir octanoate prodrug against oseltamivir-resistant influenza infection in adults has not been demonstrated. NA is classified into 2 groups based upon phylogenetic analysis and it is becoming clear that each group has some distinct structural features. Recently, we found that pH1N1 N1 NA (p09N1) is an atypical group 1 NA with some group 2-like features in its active site (lack of a 150-cavity). Furthermore, it has been reported that certain oseltamivir-resistant substitutions in the NA active site are group 1 specific. In order to comprehensively evaluate the effectiveness of laninamivir, we utilized recombinant N5 (typical group 1), p09N1 (atypical group 1) and N2 from the 1957 pandemic H2N2 (p57N2) (typical group 2) to carry out in vitro inhibition assays. We found that laninamivir and its octanoate prodrug display group specific preferences to different influenza NAs and provide the structural basis of their specific action based upon their novel complex crystal structures. Our results indicate that laninamivir and zanamivir are more effective against group 1 NA with a 150-cavity than group 2 NA with no 150-cavity. Furthermore, we have found that the laninamivir octanoate prodrug has a unique binding mode in p09N1 that is different from that of group 2 p57N2, but with some similarities to NA-oseltamivir binding, which provides additional insight into group specific differences of oseltamivir binding and resistance.


    Organizational Affiliation

    CAS Key Laboratory of Pathogenic Microbiology and Immunology, Institute of Microbiology, Chinese Academy of Sciences, Beijing, China.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Neuraminidase
A, B, C, D
469Influenza A virus (A/RI/5+/1957(H2N2))Gene Names: NA
EC: 3.2.1.18
Find proteins for Q194T1 (Influenza A virus (A/RI/5+/1957(H2N2)))
Go to UniProtKB:  Q194T1
Small Molecules
Ligands 5 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
CA
Query on CA

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

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

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Download CCD File 
A, B, C, D
BETA-D-MANNOSE
C6 H12 O6
WQZGKKKJIJFFOK-RWOPYEJCSA-N
 Ligand Interaction
LNV
Query on LNV

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Download CCD File 
A, B, C, D
5-(acetylamino)-2,6-anhydro-4-carbamimidamido-3,4,5-trideoxy-7-O-methyl-D-glycero-D-galacto-non-2-enonic acid
Laninamivir
C13 H22 N4 O7
QNRRHYPPQFELSF-CNYIRLTGSA-N
 Ligand Interaction
NAG
Query on NAG

Download SDF File 
Download CCD File 
A, B, C, D
N-ACETYL-D-GLUCOSAMINE
C8 H15 N O6
OVRNDRQMDRJTHS-FMDGEEDCSA-N
 Ligand Interaction
External Ligand Annotations 
IDBinding Affinity (Sequence Identity %)
LNVIC50: 3100 nM (100) BINDINGDB
LNVIC50: 3.12 nM BINDINGMOAD
LNVIC50: 3.12 nM PDBBIND
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.8 Å
  • R-Value Free: 0.170 
  • R-Value Work: 0.152 
  • Space Group: P 1 21 1
Unit Cell:
Length (Å)Angle (°)
a = 89.928α = 90.00
b = 140.305β = 101.54
c = 89.893γ = 90.00
Software Package:
Software NamePurpose
ADSCdata collection
PHENIXrefinement
HKL-2000data reduction
HKL-2000data scaling
PHASERphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2011-11-16
    Type: Initial release