4QN6

Crystal structure of Neuraminidase N6 complexed with Laninamivir

• PDB DOI: https://doi.org/10.2210/pdb4QN6/pdb

• Classification: HYDROLASE
• Organism(s): Influenza A virus (A/chicken/Nanchang/7-010/2000(H3N6))
• Expression System: Spodoptera frugiperda
• Mutation(s): No 


• Deposited: 2014-06-17 Released: 2014-07-30 
• Deposition Author(s): Sun, X., Li, Q., Wu, Y., Liu, Y., Qi, J., Vavricka, C.J., Gao, G.F.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.95 Å
• R-Value Free: 0.161 
• R-Value Work: 0.145 
• R-Value Observed: 0.146 

Biological Assembly 1  

Global Symmetry: Cyclic - C4  (Explore in 3D)
Global Stoichiometry: Homo 4-mer - A4 

Biological assembly 1 assigned by authors and generated by PISA (software)

Biological Assembly 2  

Global Symmetry: Cyclic - C4  (Explore in 3D)
Global Stoichiometry: Homo 4-mer - A4 

Biological assembly 2 assigned by authors and generated by PISA (software)

Macromolecule Content

• Total Structure Weight: 90.48 kDa 
• Atom Count: 7,126 
• Modelled Residue Count: 778 
• Deposited Residue Count: 782 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Neuraminidase	A, B	391	Influenza A virus (A/chicken/Nanchang/7-010/2000(H3N6))	Mutation(s): 0  Gene Names: NA
UniProt
Find proteins for Q2FCL6 (Influenza A virus) Explore Q2FCL6  Go to UniProtKB:  Q2FCL6

Oligosaccharides

Help

Entity ID: 2
Molecule	Chains	Length	2D Diagram	Glycosylation	3D Interactions
beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose	C, E	3		N-Glycosylation
Glycosylation Resources
GlyTouCan:  G15407YE GlyCosmos:  G15407YE GlyGen:  G15407YE

Entity ID: 3
Molecule	Chains	Length	2D Diagram	Glycosylation	3D Interactions
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	D, F	6		N-Glycosylation
Glycosylation Resources
GlyTouCan:  G94106MV GlyCosmos:  G94106MV GlyGen:  G94106MV

Small Molecules

Ligands 2 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
LNV	H [auth A], J [auth B]	5-acetamido-2,6-anhydro-4-carbamimidamido-3,4,5-trideoxy-7-O-methyl-D-glycero-D-galacto-non-2-enonic acid C13 H22 N4 O7 QNRRHYPPQFELSF-CNYIRLTGSA-N
CA	G [auth A], I [auth B]	CALCIUM ION Ca BHPQYMZQTOCNFJ-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.95 Å
• R-Value Free: 0.161 
• R-Value Work: 0.145 
• R-Value Observed: 0.146 
• Space Group: P 4 2₁ 2

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 137.919	α = 90
b = 137.919	β = 90
c = 148.797	γ = 90

Software Package:

Software Name	Purpose
HKL-2000	data collection
PHASER	phasing
PHENIX	refinement
HKL-2000	data reduction
HKL-2000	data scaling

Structure Validation

Entry History 

Deposition Data

• Released Date: 2014-07-30 
Deposition Author(s): Sun, X., Li, Q., Wu, Y., Liu, Y., Qi, J., Vavricka, C.J., Gao, G.F.

Revision History  

• Version 1.0: 2014-07-30
  Type: Initial release
  
• Version 1.1: 2014-08-06
  Changes: Other
• 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: 2022-08-24
  Changes: Database references, Structure summary
• Version 2.2: 2023-11-08
  Changes: Data collection, Refinement description