9OI2 | pdb_00009oi2

Structure of human Fab 245 in complex with influenza H1N1 A/Solomon Island/3/2006 hemagglutinin

• PDB DOI: https://doi.org/10.2210/pdb9OI2/pdb
• EM Map EMD-70502: EMDB EMDataResource

• Classification: IMMUNE SYSTEM/VIRAL PROTEIN
• Organism(s): Influenza A virus (A/Solomon Islands/3/2006(H1N1)), Homo sapiens
• Expression System: Spodoptera frugiperda, Homo sapiens
• Mutation(s): No 


• Deposited: 2025-05-06 Released: 2026-02-04 
• Deposition Author(s): Wu, N.C., Pholcharee, T., Lv, H.
• Funding Organization(s): Howard Hughes Medical Institute (HHMI)

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Experimental Data Snapshot

• Method: ELECTRON MICROSCOPY
• Resolution: 2.80 Å
• Aggregation State: PARTICLE 
• Reconstruction Method: SINGLE PARTICLE 

Literature

Structure of human Fab 245 in complex with influenza H1N1 A/Solomon Island/3/2006 hemagglutinin

Wu, N.C., Pholcharee, T., Lv, H.

To be published.

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Hetero 10-mer - A3B3C2D2 Pseudo Symmetry: Asymmetric - C1 
Pseudo Stoichiometry: Hetero 10-mer - A4B3C3 Local Symmetry: Cyclic - C3  (Explore in 3D)
Local Stoichiometry: Hetero 6-mer - A3B3 

Local Symmetry: Cyclic - C3  (Explore in 3D)
Local Stoichiometry: Hetero 6-mer - A3B3 

Biological assembly 1 assigned by authors.

Biological Assembly Evidence: gel filtration

Macromolecule Content 

• Total Structure Weight: 236.99 kDa 
• Atom Count: 14,649 
• Modeled Residue Count: 1,928 
• Deposited Residue Count: 2,134 
• Unique protein chains: 4

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Hemagglutinin HA1	A, C, E	326	Influenza A virus (A/Solomon Islands/3/2006(H1N1))	Mutation(s): 0  Gene Names: HA
UniProt
Find proteins for A0A0G2RTI0 (Influenza A virus) Explore A0A0G2RTI0  Go to UniProtKB:  A0A0G2RTI0

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
Hemagglutinin HA2	B, D, F	222	Influenza A virus (A/Solomon Islands/3/2006(H1N1))	Mutation(s): 0  Gene Names: HA
UniProt
Find proteins for A0A0G2RTI0 (Influenza A virus) Explore A0A0G2RTI0  Go to UniProtKB:  A0A0G2RTI0

Entity ID: 3
Molecule	Chains	Sequence Length	Organism	Details	Image
Heavy chain of Fab from human antibody 245	G [auth H], H [auth I]	138	Homo sapiens	Mutation(s): 0

Entity ID: 4
Molecule	Chains	Sequence Length	Organism	Details	Image
Light chain of Fab from human antibody 245	I [auth J], J [auth L]	107	Homo sapiens	Mutation(s): 0

Experimental Data & Validation

Experimental Data

• Method: ELECTRON MICROSCOPY
• Resolution: 2.80 Å
• Aggregation State: PARTICLE 
• Reconstruction Method: SINGLE PARTICLE 

EM Software:

Task	Software Package	Version
MODEL REFINEMENT	PHENIX	1.20.1_4487
RECONSTRUCTION	cryoSPARC	4.5

Structure Validation

Entry History & Funding Information

Deposition Data

• Released Date: 2026-02-04 
Deposition Author(s): Wu, N.C., Pholcharee, T., Lv, H.

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Funding Organization	Location	Grant Number
Howard Hughes Medical Institute (HHMI)	United States	Emerging Pathogens Initiative

Revision History  

• Version 1.0: 2026-02-04
  Type: Initial release