9LBW | pdb_00009lbw

HBcAg in complex with Fab mAb40

• PDB DOI: https://doi.org/10.2210/pdb9LBW/pdb
• EM Map EMD-62957: EMDB EMDataResource

• Classification: VIRAL PROTEIN/IMMUNE SYSTEM
• Organism(s): Hepatitis B virus, Homo sapiens
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 2025-01-03 Released: 2026-01-07 
• Deposition Author(s): Chen, S.L.
• Funding Organization(s): National Science Foundation (NSF, China), National Natural Science Foundation of China (NSFC)

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Experimental Data Snapshot

• Method: ELECTRON MICROSCOPY
• Resolution: 3.44 Å
• Aggregation State: PARTICLE 
• Reconstruction Method: SINGLE PARTICLE 

Literature

PD-1 Blockade Unleashes Local Anti-Hepatitis B Virus Humoral Immunity Targeting Recurrent Hepatocellular Carcinoma

Kuang, M., Chen, S.L.

To be published.

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Hetero 4-mer - A2B1C1 Pseudo Symmetry: Cyclic - C2  (Explore in 3D)
Pseudo Stoichiometry: Hetero 4-mer - A2B2 Local Symmetry: Cyclic - C2  (Explore in 3D)
Local Stoichiometry: Homo 2-mer - A2 

Local Symmetry: Cyclic - C2  (Explore in 3D)
Local Stoichiometry: Homo 2-mer - A2 

Biological assembly 1 assigned by authors and generated by (software)

Biological Assembly Evidence: electron microscopy

Macromolecule Content 

• Total Structure Weight: 120.32 kDa 
• Atom Count: 4,092 
• Modeled Residue Count: 519 
• Deposited Residue Count: 1,073 
• Unique protein chains: 3

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Capsid protein	A, B	183	Hepatitis B virus	Mutation(s): 0
UniProt
Find proteins for A0A7D7J7F9 (Hepatitis B virus) Explore A0A7D7J7F9  Go to UniProtKB:  A0A7D7J7F9

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
Heavy chain of Fab mAb40	C [auth H]	473	Homo sapiens	Mutation(s): 0

Entity ID: 3
Molecule	Chains	Sequence Length	Organism	Details	Image
Light chain of Fab mAb40	D [auth L]	234	Homo sapiens	Mutation(s): 0

Experimental Data & Validation

Experimental Data

• Method: ELECTRON MICROSCOPY
• Resolution: 3.44 Å
• Aggregation State: PARTICLE 
• Reconstruction Method: SINGLE PARTICLE 

EM Software:

Task	Software Package	Version
MODEL REFINEMENT	PHENIX	1.20.1_4487:

Structure Validation

Entry History 

& Funding Information

Deposition Data

• Released Date: 2026-01-07 
Deposition Author(s): Chen, S.L.

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Funding Organization	Location	Grant Number
National Science Foundation (NSF, China)	China	82322034
National Natural Science Foundation of China (NSFC)	China	82172047
National Natural Science Foundation of China (NSFC)	China	82270480

Revision History  

• Version 1.0: 2026-01-07
  Type: Initial release