9MTI | pdb_00009mti

Structure of porcine Fab 15-1 in complex with influenza H3N8 A/Mallard/Alberta/362/2017 hemagglutinin

• PDB DOI: https://doi.org/10.2210/pdb9MTI/pdb
• EM Map EMD-48610: EMDB EMDataResource

• Classification: VIRAL PROTEIN/IMMUNE SYSTEM
• Organism(s): Influenza A virus, Sus scrofa
• Expression System: Spodoptera frugiperda, Homo sapiens
• Mutation(s): No 


• Deposited: 2025-01-11 Released: 2025-09-24 
• Deposition Author(s): Lv, H., Pholcharee, T., Wu, N.C.
• Funding Organization(s): Howard Hughes Medical Institute (HHMI)

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Experimental Data Snapshot

• Method: ELECTRON MICROSCOPY
• Resolution: 2.98 Å
• Aggregation State: PARTICLE 
• Reconstruction Method: SINGLE PARTICLE 

Literature

Structural analysis of broadly neutralizing porcine antibodies to influenza hemagglutinin stem

Lv, H., Pholcharee, T., Wu, N.C.

To be published.

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Hetero 9-mer - A3B3C2D1 Pseudo Symmetry: Cyclic - C3  (Explore in 3D)
Pseudo Stoichiometry: Hetero 9-mer - A3B3C3 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: 241.11 kDa 
• Atom Count: 15,274 
• Modeled Residue Count: 1,955 
• Deposited Residue Count: 2,169 
• Unique protein chains: 3

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Hemagglutinin	A, B, C	495	Influenza A virus	Mutation(s): 0  Gene Names: HA
UniProt
Find proteins for A0A2Z4WF96 (Influenza A virus) Explore A0A2Z4WF96  Go to UniProtKB:  A0A2Z4WF96

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
Heavy chain of Fab from porcine antibody 15-1	D [auth H], E [auth I], H [auth M]	116	Sus scrofa	Mutation(s): 0

Entity ID: 3
Molecule	Chains	Sequence Length	Organism	Details	Image
Light chain of Fab from porcine antibody 15-1	F [auth J], G [auth L], I [auth N]	112	Sus scrofa	Mutation(s): 0

Experimental Data & Validation

Experimental Data

• Method: ELECTRON MICROSCOPY
• Resolution: 2.98 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: 2025-09-24 
Deposition Author(s): Lv, H., Pholcharee, T., Wu, N.C.

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

Revision History  

• Version 1.0: 2025-09-24
  Type: Initial release