9X6S | pdb_00009x6s

Structure of Influenza Hemagglutinin (A/Puerto Rico/8/1934)


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.60 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SUBTOMOGRAM AVERAGING 

wwPDB Validation 3D Report Full Report

Validation slider image for 9X6S

This is version 1.0 of the entry. See complete history

Literature

FlyTomo: a streamlined software for on-the-fly cryo-ET data processing and diagnosis.

Zhang, Z.Peng, C.Zhang, W.Liang, J.Liu, K.Chen, Y.Zhang, J.Liang, R.Song, Y.Li, S.

(2026) Nat Commun 17

  • DOI: https://doi.org/10.1038/s41467-026-75998-3
  • Primary Citation Related Structures: 
    9X6S, 9X6Z

  • PubMed Abstract: 

    Cryo-ET combined with subtomogram averaging (STA) enables the structural elucidation of macromolecular assemblies in native environments. However, their widespread adoption has been limited by the labor-intensive, expertise-dependent data processing workflow. Here we present FlyTomo, a software that streamlines data processing from frame alignment to STA with high-throughput for authentic cryo-ET scenarios. During data acquisition, FlyTomo performs real-time diagnosis, enabling prompt feedback on sample quality, microscope performance and structural features. After acquisition, it aggregates diagnostic metrics into an overview, guiding users through data review and refinement. FlyTomo also curates raw and processed data into directories to simplify data management and archiving. We validate FlyTomo across a diverse set of authentic cryo-ET samples, including purified enveloped viruses and cryo-lamellae, on multiple microscopes and cameras, achieving structures at resolutions of 3.4 to 7.3 Å. Collectively, by integrating accuracy, scalability and usability, FlyTomo reduces the technical barrier for in situ structural biology using cryo-ET.


  • Organizational Affiliation
    • Beijing Frontier Research Center for Biological Structure, Tsinghua University, Beijing, China.

Macromolecule Content 

  • Total Structure Weight: 193.59 kDa 
  • Atom Count: 12,018 
  • Modeled Residue Count: 1,482 
  • Deposited Residue Count: 1,695 
  • Unique protein chains: 1

Macromolecules

Find similar proteins by:|  3D Structure
Entity ID: 1
MoleculeChains  Sequence LengthOrganismDetailsImage
Hemagglutinin
A, B, C
565Influenza A virus (A/Puerto Rico/8/1934(H1N1))Mutation(s): 0 
UniProt
Find proteins for P03452 (Influenza A virus (strain A/Puerto Rico/8/1934 H1N1))
Explore P03452 
Go to UniProtKB:  P03452
Entity Groups
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP03452
Glycosylation
Glycosylation Sites: 5
Sequence Annotations
Expand
Reference Sequence

Small Molecules

Ligands 1 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
NAG
(Subject of Investigation/LOI)

Query on NAG



Download:Ideal Coordinates CCD File
D [auth A]
E [auth A]
F [auth A]
G [auth A]
H [auth A]
D [auth A],
E [auth A],
F [auth A],
G [auth A],
H [auth A],
I [auth B],
J [auth B],
K [auth B],
L [auth B],
M [auth B],
N [auth C],
O [auth C],
P [auth C],
Q [auth C],
R [auth C]
2-acetamido-2-deoxy-beta-D-glucopyranose
C8 H15 N O6
OVRNDRQMDRJTHS-FMDGEEDCSA-N

Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.60 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SUBTOMOGRAM AVERAGING 
EM Software:
TaskSoftware PackageVersion
MODEL REFINEMENTPHENIX
RECONSTRUCTIONRELION

Structure Validation

View Full Validation Report



Entry History 

& Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
National Natural Science Foundation of China (NSFC)China32241031
National Natural Science Foundation of China (NSFC)China82241066
National Natural Science Foundation of China (NSFC)China31271195

Revision History  (Full details and data files)

  • Version 1.0: 2026-09-16
    Type: Initial release