6L1T

Cryo-EM structure of phosphorylated Tyr39 a-synuclein amyloid fibril


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.22 Å
  • Aggregation State: FILAMENT 
  • Reconstruction Method: HELICAL 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

Parkinson's disease-related phosphorylation at Tyr39 rearranges alpha-synuclein amyloid fibril structure revealed by cryo-EM.

Zhao, K.Lim, Y.J.Liu, Z.Long, H.Sun, Y.Hu, J.J.Zhao, C.Tao, Y.Zhang, X.Li, D.Li, Y.M.Liu, C.

(2020) Proc Natl Acad Sci U S A 117: 20305-20315

  • DOI: 10.1073/pnas.1922741117
  • Primary Citation of Related Structures:  
    6L1T, 6L1U

  • PubMed Abstract: 
  • Posttranslational modifications (PTMs) of α-synuclein (α-syn), e.g., phosphorylation, play an important role in modulating α-syn pathology in Parkinson's disease (PD) and α-synucleinopathies. Accumulation of phosphorylated α-syn fibrils in Lewy bodie ...

    Posttranslational modifications (PTMs) of α-synuclein (α-syn), e.g., phosphorylation, play an important role in modulating α-syn pathology in Parkinson's disease (PD) and α-synucleinopathies. Accumulation of phosphorylated α-syn fibrils in Lewy bodies and Lewy neurites is the histological hallmark of these diseases. However, it is unclear how phosphorylation relates to α-syn pathology. Here, by combining chemical synthesis and bacterial expression, we obtained homogeneous α-syn fibrils with site-specific phosphorylation at Y39, which exhibits enhanced neuronal pathology in rat primary cortical neurons. We determined the cryo-electron microscopy (cryo-EM) structure of the pY39 α-syn fibril, which reveals a fold of α-syn with pY39 in the center of the fibril core forming an electrostatic interaction network with eight charged residues in the N-terminal region of α-syn. This structure composed of residues 1 to 100 represents the largest α-syn fibril core determined so far. This work provides structural understanding on the pathology of the pY39 α-syn fibril and highlights the importance of PTMs in defining the polymorphism and pathology of amyloid fibrils in neurodegenerative diseases.


    Organizational Affiliation

    University of Chinese Academy of Sciences, 100049 Beijing, China.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Alpha-synucleinA, B, C, D, E, F, G, H, I, J140Homo sapiensMutation(s): 0 
Gene Names: SNCANACPPARK1
Find proteins for P37840 (Homo sapiens)
Explore P37840 
Go to UniProtKB:  P37840
NIH Common Fund Data Resources
PHAROS  P37840
Protein Feature View
 ( Mouse scroll to zoom / Hold left click to move )
  • Reference Sequence
Small Molecules
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
PTR
Query on PTR
A,B,C,D,E,F,G,H,I,JL-PEPTIDE LINKINGC9 H12 N O6 PTYR
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.22 Å
  • Aggregation State: FILAMENT 
  • Reconstruction Method: HELICAL 

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2020-08-12
    Type: Initial release
  • Version 1.1: 2020-09-02
    Changes: Database references