9MTK | pdb_00009mtk

Structure of porcine Fab 24-1G17 in complex with influenza H1N1 A/Hawaii/70/2019 hemagglutinin

• PDB DOI: https://doi.org/10.2210/pdb9MTK/pdb
• EM Map EMD-48612: 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: 2.54 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: Cyclic - C3  (Explore in 3D)
Global Stoichiometry: Hetero 12-mer - A3B3C3D3 Pseudo Symmetry: Cyclic - C3  (Explore in 3D)
Pseudo Stoichiometry: Hetero 12-mer - A6B3C3 

Biological assembly 1 assigned by authors.

Biological Assembly Evidence: gel filtration

Macromolecule Content 

• Total Structure Weight: 248.14 kDa 
• Atom Count: 16,649 
• Modeled Residue Count: 2,143 
• Deposited Residue Count: 2,250 
• Unique protein chains: 4

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Hemagglutinin	A, B [auth C], C [auth E]	327	Influenza A virus	Mutation(s): 0  Gene Names: HA
UniProt
Find proteins for A0A7U0YFD5 (Influenza A virus) Explore A0A7U0YFD5  Go to UniProtKB:  A0A7U0YFD5

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
Heavy chain of Fab from porcine antibody 24-1G17	D [auth H], E [auth I], H [auth M]	133	Sus scrofa	Mutation(s): 0

Entity ID: 3
Molecule	Chains	Sequence Length	Organism	Details	Image
Light chain of Fab from porcine antibody 24-1G17	F [auth J], G [auth L], I [auth N]	116	Sus scrofa	Mutation(s): 0

Entity ID: 4
Molecule	Chains	Sequence Length	Organism	Details	Image
Hemagglutinin	J [auth B], K [auth D], L [auth F]	174	Influenza A virus	Mutation(s): 0  Gene Names: HA
UniProt
Find proteins for A0A7U3R9T0 (Influenza A virus) Explore A0A7U3R9T0  Go to UniProtKB:  A0A7U3R9T0

Experimental Data & Validation

Experimental Data

• Method: ELECTRON MICROSCOPY
• Resolution: 2.54 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