9XTH | pdb_00009xth

The complex structure of antibody CAV-CH76 bound to the hemagglutinin of influenza B virus (HA_B/Guangdong-Yuexiu/120/2022)

• PDB DOI: https://doi.org/10.2210/pdb9XTH/pdb

• Classification: VIRAL PROTEIN
• Organism(s): Homo sapiens, Influenza B virus
• Expression System: Homo sapiens, Spodoptera frugiperda
• Mutation(s): No 


• Deposited: 2025-11-22 Released: 2026-02-18 
• Deposition Author(s): Ge, J.W., Fan, M.
• Funding Organization(s): Other government

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 3.01 Å
• R-Value Free: 
  0.244 (Depositor), 0.237 (DCC) 
• R-Value Work: 
  0.197 (Depositor), 0.202 (DCC) 
• R-Value Observed: 
  0.200 (Depositor) 

Starting Model: in silico

Literature

The complex structure of antibody CAV-CH76 bound to the hemagglutinin of influenza B virus (HA_B/Guangdong-Yuexiu/120/2022)

Ge, J.W., Fan, M.

To be published.

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Hetero 3-mer - A1B1C1 Pseudo Symmetry: Asymmetric - C1 
Pseudo Stoichiometry: Hetero 3-mer - A2B1 

Biological assembly 1 assigned by authors.

Biological Assembly Evidence: gel filtration

Macromolecule Content 

• Total Structure Weight: 78.57 kDa 
• Atom Count: 5,102 
• Modeled Residue Count: 665 
• Deposited Residue Count: 723 
• Unique protein chains: 3

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
the heavy chain of antibody CAV-CH76	A [auth B]	250	Homo sapiens	Mutation(s): 0

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
hemagglutinin	B [auth A]	240	Influenza B virus	Mutation(s): 0

Entity ID: 3
Molecule	Chains	Sequence Length	Organism	Details	Image
the light chain of antibody CAV-CH76	C	233	Homo sapiens	Mutation(s): 0

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 3.01 Å
• R-Value Free:  0.244 (Depositor), 0.237 (DCC) 
• R-Value Work:  0.197 (Depositor), 0.202 (DCC) 
• R-Value Observed: 0.200 (Depositor) 

Space Group: P 1 2₁ 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 50.207	α = 90
b = 141.509	β = 105.54
c = 53.079	γ = 90

Software Package:

Software Name	Purpose
PHENIX	refinement
PDB_EXTRACT	data extraction
HKL-2000	data reduction
HKL-2000	data scaling
PHASER	phasing

Structure Validation

Entry History 

& Funding Information

Deposition Data

• Released Date: 2026-02-18 
Deposition Author(s): Ge, J.W., Fan, M.

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Funding Organization	Location	Grant Number
Other government		--

Revision History  

• Version 1.0: 2026-02-18
  Type: Initial release