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

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
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This is version 1.0 of the entry. See complete history.

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.

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

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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
UniProt & NIH Common Fund Data Resources
Find proteins for P01857 (Homo sapiens) Explore P01857 Go to UniProtKB: P01857
PHAROS: P01857 GTEx: ENSG00000211896
Entity Groups
Sequence Clusters	30% Identity 50% Identity 70% Identity 90% Identity 95% Identity 100% Identity
UniProt Group	P01857
Sequence Annotations Expand
Reference Sequence

Find similar proteins by:

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
hemagglutinin	B [auth A]	240	Influenza B virus	Mutation(s): 0
UniProt
Find proteins for A0A6H0XEA8 (Influenza B virus) Explore A0A6H0XEA8 Go to UniProtKB: A0A6H0XEA8
Entity Groups
Sequence Clusters	30% Identity 50% Identity 70% Identity 90% Identity 95% Identity 100% Identity
UniProt Group	A0A6H0XEA8
Sequence Annotations Expand
Reference Sequence

Find similar proteins by:

Entity ID: 3
Molecule	Chains	Sequence Length	Organism	Details	Image
the light chain of antibody CAV-CH76	C	233	Homo sapiens	Mutation(s): 0
UniProt
Find proteins for Q7Z3Y4 (Homo sapiens) Explore Q7Z3Y4 Go to UniProtKB: Q7Z3Y4
Entity Groups
Sequence Clusters	30% Identity 50% Identity 70% Identity 90% Identity 95% Identity 100% Identity
UniProt Group	Q7Z3Y4
Sequence Annotations Expand
Reference Sequence

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

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Entry History

& Funding Information

Deposition Data

Released Date: 2026-02-18

Deposition Author(s):

Funding Organization	Location	Grant Number
Other government		--

Revision History (Full details and data files)

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

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RCSB PDB Core Operations are funded by the U.S. National Science Foundation (DBI-2321666), the US Department of Energy (DE-SC0019749), and the National Cancer Institute, National Institute of Allergy and Infectious Diseases, and National Institute of General Medical Sciences of the National Institutes of Health under grant R01GM157729. RCSB PDB uses resources of the National Energy Research Scientific Computing Center (NERSC), a Department of Energy User Facility.