1F8B

Native Influenza Virus Neuraminidase in Complex with NEU5AC2EN

• PDB DOI: https://doi.org/10.2210/pdb1F8B/pdb

• Classification: HYDROLASE/HYDROLASE INHIBITOR
• Organism(s): Influenza A virus (A/tern/Australia/G70C/1975(H11N9))
• Expression System: Influenza A virus
• Mutation(s): No 


• Deposited: 2000-06-30 Released: 2001-04-11 
• Deposition Author(s): Smith, B.J., Colman, P.M., Von Itzstein, M., Danylec, B., Varghese, J.N.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.80 Å
• R-Value Free: 0.214 
• R-Value Work: 0.166 

Biological Assembly 1  

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

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 45.98 kDa 
• Atom Count: 3,558 
• Modelled Residue Count: 388 
• Deposited Residue Count: 388 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
NEURAMINIDASE	A	388	Influenza A virus (A/tern/Australia/G70C/1975(H11N9))	Mutation(s): 0  EC: 3.2.1.18
UniProt
Find proteins for P03472 (Influenza A virus (strain A/Tern/Australia/G70C/1975 H11N9)) Explore P03472  Go to UniProtKB:  P03472

Oligosaccharides

Help

Entity ID: 2
Molecule	Chains	Length	2D Diagram	Glycosylation	3D Interactions
alpha-D-mannopyranose-(1-2)-alpha-D-mannopyranose-(1-2)-alpha-D-mannopyranose-(1-3)-[alpha-D-mannopyranose-(1-6)]alpha-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose	B	7		N-Glycosylation
Glycosylation Resources
GlyTouCan:  G57082ZE GlyCosmos:  G57082ZE GlyGen:  G57082ZE

Entity ID: 3
Molecule	Chains	Length	2D Diagram	Glycosylation	3D Interactions
2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose	C	2		N-Glycosylation
Glycosylation Resources
GlyTouCan:  G42666HT GlyCosmos:  G42666HT GlyGen:  G42666HT

Small Molecules

Ligands 3 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
DAN	G [auth A]	2-DEOXY-2,3-DEHYDRO-N-ACETYL-NEURAMINIC ACID C11 H17 N O8 JINJZWSZQKHCIP-UFGQHTETSA-N
NAG	D [auth A]	2-acetamido-2-deoxy-beta-D-glucopyranose C8 H15 N O6 OVRNDRQMDRJTHS-FMDGEEDCSA-N
CA	E [auth A], F [auth A]	CALCIUM ION Ca BHPQYMZQTOCNFJ-UHFFFAOYSA-N

Binding Affinity Annotations
ID	Source	Binding Affinity
DAN	Binding MOAD:  1F8B	Ki: 4000 (nM) from 1 assay(s)
	PDBBind:  1F8B	Ki: 4000 (nM) from 1 assay(s)
	BindingDB:  1F8B	IC50: 1.30e+4 (nM) from 1 assay(s)

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.80 Å
• R-Value Free: 0.214 
• R-Value Work: 0.166 
• Space Group: I 4 3 2

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 181.03	α = 90
b = 181.03	β = 90
c = 181.03	γ = 90

Software Package:

Software Name	Purpose
DENZO	data reduction
SCALEPACK	data scaling
X-PLOR	model building
X-PLOR	refinement
X-PLOR	phasing

Structure Validation

Entry History 

Deposition Data

• Released Date: 2001-04-11 
Deposition Author(s): Smith, B.J., Colman, P.M., Von Itzstein, M., Danylec, B., Varghese, J.N.

Revision History  

• Version 1.0: 2001-04-11
  Type: Initial release
  
• Version 1.1: 2008-01-08
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Non-polymer description, Version format compliance
• Version 1.3: 2011-11-16
  Changes: Atomic model
• Version 1.4: 2015-03-11
  Changes: Other
• Version 2.0: 2020-07-29
  Type: Remediation
  Reason: Carbohydrate remediation
  Changes: Advisory, Atomic model, Data collection, Database references, Derived calculations, Structure summary