9JE4 | pdb_00009je4

The cryo-EM structure of Ac-E57A_G51DA53T a-syn fibril.

• PDB DOI: https://doi.org/10.2210/pdb9JE4/pdb
• EM Map EMD-61406: EMDB EMDataResource

• Classification: PROTEIN FIBRIL
• Organism(s): Homo sapiens
• Expression System: Escherichia coli
• Mutation(s): Yes 


• Deposited: 2024-09-02 Released: 2025-09-24 
• Deposition Author(s): Zhao, Q.Y., Tao, Y.Q., Li, D., Liu, C.
• Funding Organization(s): Not funded

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Experimental Data Snapshot

• Method: ELECTRON MICROSCOPY
• Resolution: 3.37 Å
• Aggregation State: FILAMENT 
• Reconstruction Method: HELICAL 

Literature

The cryo-EM structure of Ac-E57A_G51DA53T a-syn fibril.

Zhao, Q.Y., Tao, Y.Q.

To be published.

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Hetero 6-mer - A3B3 Pseudo Symmetry: Asymmetric - C1 
Pseudo Stoichiometry: Hetero 6-mer - A3B1C1D1 

Local Symmetry: Cyclic - C2  (Explore in 3D)
Local Stoichiometry: Homo 2-mer - B2 Local Symmetry: Cyclic - C2  (Explore in 3D)
Local Stoichiometry: Homo 2-mer - B2 

Biological assembly 1 assigned by authors.

Biological Assembly Evidence: electron microscopy

Macromolecule Content 

• Total Structure Weight: 46.89 kDa 
• Atom Count: 1,533 
• Modeled Residue Count: 231 
• Deposited Residue Count: 459 
• Unique protein chains: 2

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Alpha-synuclein	A, C [auth B], E [auth C]	140	Homo sapiens	Mutation(s): 3  Gene Names: SNCA, NACP, PARK1
UniProt & NIH Common Fund Data Resources
Find proteins for P37840 (Homo sapiens) Explore P37840  Go to UniProtKB:  P37840
PHAROS:  P37840 GTEx:  ENSG00000145335

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
Ac-G51DA53T a-synuclein	B [auth F], D [auth G], F [auth H]	13	Homo sapiens	Mutation(s): 0

Experimental Data & Validation

Experimental Data

• Method: ELECTRON MICROSCOPY
• Resolution: 3.37 Å
• Aggregation State: FILAMENT 
• Reconstruction Method: HELICAL 

Structure Validation

Entry History & Funding Information

Deposition Data

• Released Date: 2025-09-24 
Deposition Author(s): Zhao, Q.Y., Tao, Y.Q., Li, D., Liu, C.

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Funding Organization	Location	Grant Number
Not funded		--

Revision History  

• Version 1.0: 2025-09-24
  Type: Initial release