2B8H

A/NWS/whale/Maine/1/84 (H1N9) reassortant influenza virus neuraminidase


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.20 Å
  • R-Value Free: 0.189 
  • R-Value Work: 0.139 
  • R-Value Observed: 0.141 

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Ligand Structure Quality Assessment 


This is version 2.1 of the entry. See complete history


Literature

Structure of a calcium-deficient form of influenza virus neuraminidase: implications for substrate binding.

Smith, B.J.Huyton, T.Joosten, R.P.McKimm-Breschkin, J.L.Zhang, J.G.Luo, C.S.Lou, M.Z.Labrou, N.E.Garrett, T.P.

(2006) Acta Crystallogr D Biol Crystallogr 62: 947-952

  • DOI: https://doi.org/10.1107/S0907444906020063
  • Primary Citation of Related Structures:  
    2B8H

  • PubMed Abstract: 

    The X-ray structure of influenza virus neuraminidase (NA) isolated from whale, subtype N9, has been determined at 2.2 A resolution and contains a tetrameric protein in the asymmetric unit. In structures of NA determined previously, a calcium ion is observed to coordinate amino acids near the substrate-binding site. In three of the NA monomers determined here this calcium is absent, resulting in structural alterations near the substrate-binding site. These changes affect the conformation of residues that participate in several key interactions between the enzyme and substrate and provide at a molecular level the basis of the structural and functional role of calcium in substrate and inhibitor binding. Several sulfate ions were identified in complex with the protein. These are located in the active site, occupying the space reserved for the substrate (sialic acid) carboxylate, and in positions leading away from the substrate-binding site. These sites offer a new opportunity for the design of inhibitors of influenza virus NA.


  • Organizational Affiliation

    The Walter and Eliza Hall Institute of Medical Research, 1G Royal Parade, Parkville, Victoria 3050, Australia. bsmith@wehi.edu.au


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Neuraminidase
A, B, C, D
388Influenza A virusMutation(s): 0 
EC: 3.2.1.18
UniProt
Find proteins for P05803 (Influenza A virus (strain A/Whale/Maine/1/1984 H13N9))
Explore P05803 
Go to UniProtKB:  P05803
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP05803
Sequence Annotations
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  • Reference Sequence
Oligosaccharides

Help

Entity ID: 2
MoleculeChains Length2D Diagram Glycosylation3D Interactions
2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose
E, G, I, K
2N-Glycosylation
Glycosylation Resources
GlyTouCan:  G42666HT
GlyCosmos:  G42666HT
GlyGen:  G42666HT
Entity ID: 3
MoleculeChains Length2D Diagram Glycosylation3D Interactions
alpha-D-mannopyranose-(1-2)-alpha-D-mannopyranose-(1-2)-alpha-D-mannopyranose-(1-3)-[alpha-D-mannopyranose-(1-3)-[alpha-D-mannopyranose-(1-6)]alpha-D-mannopyranose-(1-6)]beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose
F, J, L
9N-Glycosylation
Glycosylation Resources
GlyTouCan:  G68668TB
GlyCosmos:  G68668TB
GlyGen:  G68668TB
Entity ID: 4
MoleculeChains Length2D Diagram Glycosylation3D Interactions
alpha-D-mannopyranose-(1-2)-alpha-D-mannopyranose-(1-2)-alpha-D-mannopyranose-(1-3)-[alpha-D-mannopyranose-(1-2)-alpha-D-mannopyranose-(1-6)-[alpha-D-mannopyranose-(1-3)]alpha-D-mannopyranose-(1-6)]beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose
H
10N-Glycosylation
Glycosylation Resources
GlyTouCan:  G40702WU
GlyCosmos:  G40702WU
GlyGen:  G40702WU
Small Molecules
Ligands 4 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
NAG
Query on NAG

Download Ideal Coordinates CCD File 
HA [auth C],
M [auth A],
SA [auth D],
Z [auth B]
2-acetamido-2-deoxy-beta-D-glucopyranose
C8 H15 N O6
OVRNDRQMDRJTHS-FMDGEEDCSA-N
SO4
Query on SO4

Download Ideal Coordinates CCD File 
AA [auth B]
BA [auth B]
CA [auth B]
DA [auth B]
EA [auth B]
AA [auth B],
BA [auth B],
CA [auth B],
DA [auth B],
EA [auth B],
GA [auth B],
IA [auth C],
JA [auth C],
KA [auth C],
LA [auth C],
MA [auth C],
N [auth A],
NA [auth C],
O [auth A],
OA [auth C],
P [auth A],
PA [auth C],
Q [auth A],
R [auth A],
RA [auth C],
S [auth A],
T [auth A],
TA [auth D],
UA [auth D],
V [auth A],
VA [auth D],
WA [auth D],
XA [auth D],
YA [auth D]
SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L
GOL
Query on GOL

Download Ideal Coordinates CCD File 
W [auth A],
X [auth A],
Y [auth A]
GLYCEROL
C3 H8 O3
PEDCQBHIVMGVHV-UHFFFAOYSA-N
CL
Query on CL

Download Ideal Coordinates CCD File 
FA [auth B],
QA [auth C],
U [auth A],
ZA [auth D]
CHLORIDE ION
Cl
VEXZGXHMUGYJMC-UHFFFAOYSA-M
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.20 Å
  • R-Value Free: 0.189 
  • R-Value Work: 0.139 
  • R-Value Observed: 0.141 
  • Space Group: P 32 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 107.516α = 90
b = 107.516β = 90
c = 338.487γ = 120
Software Package:
Software NamePurpose
REFMACrefinement
DENZOdata reduction
SCALEPACKdata scaling
AMoREphasing

Structure Validation

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Ligand Structure Quality Assessment 


Entry History 

Revision History  (Full details and data files)

  • Version 1.0: 2006-09-05
    Type: Initial release
  • Version 1.1: 2008-05-01
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Non-polymer description, Version format compliance
  • Version 2.0: 2020-07-29
    Type: Remediation
    Reason: Carbohydrate remediation
    Changes: Atomic model, Data collection, Database references, Derived calculations, Structure summary
  • Version 2.1: 2023-10-25
    Changes: Data collection, Database references, Refinement description, Structure summary