8X2D | pdb_00008x2d

Crystal structure of H5 hemagglutinin from swan-infecting H5N8 influenza virus complexed with avian receptor analog LSTc

• PDB DOI: https://doi.org/10.2210/pdb8X2D/pdb

• Classification: VIRAL PROTEIN/IMMUNE SYSTEM
• Organism(s): Influenza A virus
• Expression System: Baculovirus transfer vector pFASTBAC1
• Mutation(s): Yes 


• Deposited: 2023-11-09 Released: 2025-05-14 
• Deposition Author(s): Jin, X.Y., Han, P., Song, H., Qi, J.X.
• Funding Organization(s): National Natural Science Foundation of China (NSFC)

---

Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.48 Å
• R-Value Free: 
  0.252 (Depositor), 0.240 (DCC) 
• R-Value Work: 
  0.234 (Depositor), 0.234 (DCC) 
• R-Value Observed: 
  0.235 (Depositor) 

Starting Model: experimental

Literature

Enhanced binding of Sialyl Lewis X to hemagglutinin contributes to H5N8 mammalian pathogenicity and infectivity

Jin, X., Han, P., Zhang, C., Miao, A.D., Shi, Y., Qi, J., Bi, Y., Liu, Y., Song, H., Gao, G.F.

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: 177.47 kDa 
• Atom Count: 12,327 
• Modeled Residue Count: 1,470 
• Deposited Residue Count: 1,518 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Hemagglutinin	A, B, C	506	Influenza A virus	Mutation(s): 3  Gene Names: HA
UniProt
Find proteins for A0A8E4ZAK5 (Influenza A virus) Explore A0A8E4ZAK5  Go to UniProtKB:  A0A8E4ZAK5
Glycosylation
Glycosylation Sites: 2

Oligosaccharides

Help

Entity ID: 2
Molecule	Chains	Length	2D Diagram	Glycosylation	3D Interactions
N-acetyl-alpha-neuraminic acid-(2-6)-beta-D-galactopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-3)-beta-D-galactopyranose	D	4		N/A
Glycosylation Resources
GlyTouCan:  G03509EL GlyCosmos:  G03509EL GlyGen:  G03509EL

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	E, F	2		N-Glycosylation
Glycosylation Resources
GlyTouCan:  G42666HT GlyCosmos:  G42666HT GlyGen:  G42666HT

Entity ID: 4
Molecule	Chains	Length	2D Diagram	Glycosylation	3D Interactions
N-acetyl-alpha-neuraminic acid-(2-6)-beta-D-galactopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose	G, H	3		N/A
Glycosylation Resources
GlyTouCan:  G73578JC GlyCosmos:  G73578JC GlyGen:  G73578JC

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
NAG	I [auth A], J [auth A], K [auth A], L [auth B], M [auth C], N [auth C]	2-acetamido-2-deoxy-beta-D-glucopyranose C8 H15 N O6 OVRNDRQMDRJTHS-FMDGEEDCSA-N

Biologically Interesting Molecules (External Reference) 1 Unique

Entity ID: 4
ID	Chains	Name	Type/Class	2D Diagram	3D Interactions
PRD_900046	G, H	6'-sialyl-N-acetyllactosamine	Oligosaccharide / Glycan component

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.48 Å
• R-Value Free:  0.252 (Depositor), 0.240 (DCC) 
• R-Value Work:  0.234 (Depositor), 0.234 (DCC) 
• R-Value Observed: 0.235 (Depositor) 

Space Group: P 1 2₁ 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 80.68	α = 90
b = 107.034	β = 100.47
c = 134.326	γ = 90

Software Package:

Software Name	Purpose
PHENIX	refinement
PHENIX	refinement
HKL-3000	data reduction
HKL-3000	data scaling
PHASER	phasing

Structure Validation

Entry History & Funding Information

Deposition Data

• Released Date: 2025-05-14 
Deposition Author(s): Jin, X.Y., Han, P., Song, H., Qi, J.X.

---

Funding Organization	Location	Grant Number
National Natural Science Foundation of China (NSFC)	China	82122040

Revision History  

• Version 1.0: 2025-05-14
  Type: Initial release