6P6P

Crystal structure of hemagglutinin from influenza virus A/Sichuan/2/1987 (H3N2)

• PDB DOI: https://doi.org/10.2210/pdb6P6P/pdb

• Classification: VIRAL PROTEIN
• Organism(s): Influenza A virus (A/Sichuan/2/1987(H3N2))
• Expression System: Trichoplusia ni
• Mutation(s): No 


• Deposited: 2019-06-04 Released: 2020-07-01 
• Deposition Author(s): Dai, Y.N., Fremont, D.H., Center for Structural Genomics of Infectious Diseases (CSGID)

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.31 Å
• R-Value Free: 0.251 
• R-Value Work: 0.221 
• R-Value Observed: 0.230 

Starting Model: experimental

Literature

Crystal structure of hemagglutinin from influenza virus A/Sichuan/2/1987 (H3N2)

Dai, Y.N., Fremont, D.H., Center for Structural Genomics of Infectious Diseases (CSGID)

To be published.

Biological Assembly 1  

Global Symmetry: Cyclic - C3  (Explore in 3D)
Global Stoichiometry: Homo 3-mer - A3 

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

Biological Assembly Evidence: gel filtration

Biological Assembly 2  

Global Symmetry: Cyclic - C3  (Explore in 3D)
Global Stoichiometry: Homo 3-mer - A3 

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

Macromolecule Content

• Total Structure Weight: 343.74 kDa 
• Atom Count: 24,621 
• Modelled Residue Count: 2,931 
• Deposited Residue Count: 2,982 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Hemagglutinin	A, B, C, D, E, F	497	Influenza A virus (A/Sichuan/2/1987(H3N2))	Mutation(s): 0  Gene Names: HA
UniProt
Find proteins for H9XCU1 (Influenza A virus) Explore H9XCU1  Go to UniProtKB:  H9XCU1
Glycosylation
Glycosylation Sites: 5

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	G, H, I, J, K, L	3		N-Glycosylation
Glycosylation Resources
GlyTouCan:  G15407YE GlyCosmos:  G15407YE GlyGen:  G15407YE

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
NAG (Subject of Investigation/LOI)	AA [auth D], BA [auth D], CA [auth E], DA [auth E], EA [auth E], FA [auth E], GA [auth F], HA [auth F], IA [auth F], JA [auth F], M [auth A], N [auth A], O [auth A], P [auth A], Q [auth B], R [auth B], S [auth B], T [auth B], U [auth C], V [auth C], W [auth C], X [auth C], Y [auth D], Z [auth D]	2-acetamido-2-deoxy-beta-D-glucopyranose C8 H15 N O6 OVRNDRQMDRJTHS-FMDGEEDCSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.31 Å
• R-Value Free: 0.251 
• R-Value Work: 0.221 
• R-Value Observed: 0.230 
• Space Group: C 1 2 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 211.94	α = 90
b = 149.94	β = 135.01
c = 150.09	γ = 90

Software Package:

Software Name	Purpose
PHENIX	refinement
XDS	data reduction
Coot	model building
PHASER	phasing
Coot	model building

Structure Validation

Entry History 

Deposition Data

• Released Date: 2020-07-01 
Deposition Author(s): Dai, Y.N., Fremont, D.H., Center for Structural Genomics of Infectious Diseases (CSGID)

Revision History  

• Version 1.0: 2020-07-01
  Type: Initial release
  
• Version 2.0: 2020-07-29
  Type: Remediation
  Reason: Carbohydrate remediation
  Changes: Advisory, Atomic model, Data collection, Derived calculations, Structure summary
• Version 2.1: 2023-10-11
  Changes: Data collection, Database references, Refinement description, Structure summary
• Version 2.2: 2024-10-16
  Changes: Structure summary