4FVK

Structural and functional characterization of neuraminidase-like molecule N10 derived from bat influenza A virus


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.198 Å
  • R-Value Free: 0.246 
  • R-Value Work: 0.207 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Structural and functional characterization of neuraminidase-like molecule N10 derived from bat influenza A virus

Li, Q.Sun, X.M.Li, Z.X.Liu, Y.Vavricka, C.J.Qi, J.X.Gao, G.F.

(2012) Proc.Natl.Acad.Sci.USA 109: 18897-18902

  • DOI: 10.1073/pnas.1211037109

  • PubMed Abstract: 
  • The recent discovery of the unique genome of influenza virus H17N10 in bats raises considerable doubt about the origin and evolution of influenza A viruses. It also identifies a neuraminidase (NA)-like protein, N10, that is highly divergent from the ...

    The recent discovery of the unique genome of influenza virus H17N10 in bats raises considerable doubt about the origin and evolution of influenza A viruses. It also identifies a neuraminidase (NA)-like protein, N10, that is highly divergent from the nine other well-established serotypes of influenza A NA (N1-N9). The structural elucidation and functional characterization of influenza NAs have illustrated the complexity of NA structures, thus raising a key question as to whether N10 has a special structure and function. Here the crystal structure of N10, derived from influenza virus A/little yellow-shouldered bat/Guatemala/153/2009 (H17N10), was solved at a resolution of 2.20 Å. Overall, the structure of N10 was found to be similar to that of the other known influenza NA structures. In vitro enzymatic assays demonstrated that N10 lacks canonical NA activity. A detailed structural analysis revealed dramatic alterations of the conserved active site residues that are unfavorable for the binding and cleavage of terminally linked sialic acid receptors. Furthermore, an unusual 150-loop (residues 147-152) was observed to participate in the intermolecular polar interactions between adjacent N10 molecules of the N10 tetramer. Our study of influenza N10 provides insight into the structure and function of the sialidase superfamily and sheds light on the molecular mechanism of bat influenza virus infection.


    Organizational Affiliation

    School of Life Sciences, University of Science and Technology of China, Hefei 230027, China.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Neuraminidase
A, B
376Influenza A virus (strain A/little yellow-shouldered bat/Guatemala/153/2009(H17N10))Mutation(s): 0 
Gene Names: NA
EC: 3.2.1.18
Find proteins for H6QM75 (Influenza A virus (strain A/little yellow-shouldered bat/Guatemala/153/2009(H17N10)))
Go to UniProtKB:  H6QM75
Small Molecules
Ligands 3 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
ZN
Query on ZN

Download SDF File 
Download CCD File 
A, B
ZINC ION
Zn
PTFCDOFLOPIGGS-UHFFFAOYSA-N
 Ligand Interaction
CA
Query on CA

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

Download SDF File 
Download CCD File 
A, B
N-ACETYL-D-GLUCOSAMINE
C8 H15 N O6
OVRNDRQMDRJTHS-FMDGEEDCSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.198 Å
  • R-Value Free: 0.246 
  • R-Value Work: 0.207 
  • Space Group: P 4 21 2
Unit Cell:
Length (Å)Angle (°)
a = 122.496α = 90.00
b = 122.496β = 90.00
c = 110.504γ = 90.00
Software Package:
Software NamePurpose
HKL-2000data reduction
PHASERphasing
PHENIXrefinement
HKL-2000data scaling
Blu-Icedata collection

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2012-09-19
    Type: Initial release
  • Version 1.1: 2013-07-03
    Type: Database references