6MXU

Crystal structure of hemagglutinin from influenza virus A/Texas/1/1977 (H3N2)

• PDB DOI: https://doi.org/10.2210/pdb6MXU/pdb

• Classification: VIRAL PROTEIN
• Organism(s): Influenza A virus (A/Texas/1/1977(H3N2))
• Expression System: Trichoplusia ni
• Mutation(s): No 


• Deposited: 2018-10-31 Released: 2019-05-15 
• Deposition Author(s): Dai, Y.N., Fremont, D.H., Center for Structural Genomics of Infectious Diseases (CSGID)

---

Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.85 Å
• R-Value Free: 0.212 
• R-Value Work: 0.193 
• R-Value Observed: 0.194 

Starting Model: experimental

Literature

Crystal structure of hemagglutinin from influenza virus A/Texas/1/1977 (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

Macromolecule Content

• Total Structure Weight: 173.43 kDa 
• Atom Count: 13,254 
• Modelled Residue Count: 1,462 
• Deposited Residue Count: 1,491 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Hemagglutinin	A, B, C	497	Influenza A virus (A/Texas/1/1977(H3N2))	Mutation(s): 0  Gene Names: HA
UniProt
Find proteins for H9XIU5 (Influenza A virus (strain A/Texas/1/1977 H3N2)) Explore H9XIU5  Go to UniProtKB:  H9XIU5
Glycosylation
Glycosylation Sites: 5

Oligosaccharides

Help

Entity ID: 2
Molecule	Chains	Length	2D Diagram	Glycosylation	3D Interactions
2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose	D, E, F, H, J, K, M	2		N-Glycosylation
Glycosylation Resources
GlyTouCan:  G42666HT GlyCosmos:  G42666HT GlyGen:  G42666HT

Entity ID: 3
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, I, 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	N [auth B], O [auth B], P [auth B], Q [auth C], R [auth C], S [auth C], T [auth C]	2-acetamido-2-deoxy-beta-D-glucopyranose C8 H15 N O6 OVRNDRQMDRJTHS-FMDGEEDCSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.85 Å
• R-Value Free: 0.212 
• R-Value Work: 0.193 
• R-Value Observed: 0.194 
• Space Group: C 1 2 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 197.89	α = 90
b = 186.24	β = 110.09
c = 106.96	γ = 90

Software Package:

Software Name	Purpose
PHENIX	refinement
XDS	data reduction
XDS	data scaling
PHASER	phasing
PDB_EXTRACT	data extraction

Structure Validation

Entry History 

Deposition Data

• Released Date: 2019-05-15 
Deposition Author(s): Dai, Y.N., Fremont, D.H., Center for Structural Genomics of Infectious Diseases (CSGID)

Revision History  

• Version 1.0: 2019-05-15
  Type: Initial release
  
• Version 2.0: 2020-07-29
  Type: Remediation
  Reason: Carbohydrate remediation
  Changes: 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