8QX9

TDP-43 amyloid fibrils: Morphology-1a


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.76 Å
  • Aggregation State: HELICAL ARRAY 
  • Reconstruction Method: HELICAL 

wwPDB Validation   3D Report Full Report


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Literature

Cryo-EM observation of the amyloid key structure of polymorphic TDP-43 amyloid fibrils.

Sharma, K.Stockert, F.Shenoy, J.Berbon, M.Abdul-Shukkoor, M.B.Habenstein, B.Loquet, A.Schmidt, M.Fandrich, M.

(2024) Nat Commun 15: 486-486

  • DOI: https://doi.org/10.1038/s41467-023-44489-0
  • Primary Citation of Related Structures:  
    8QX9, 8QXA, 8QXB

  • PubMed Abstract: 

    The transactive response DNA-binding protein-43 (TDP-43) is a multi-facet protein involved in phase separation, RNA-binding, and alternative splicing. In the context of neurodegenerative diseases, abnormal aggregation of TDP-43 has been linked to amyotrophic lateral sclerosis and frontotemporal lobar degeneration through the aggregation of its C-terminal domain. Here, we report a cryo-electron microscopy (cryo-EM)-based structural characterization of TDP-43 fibrils obtained from the full-length protein. We find that the fibrils are polymorphic and contain three different amyloid structures. The structures differ in the number and relative orientation of the protofilaments, although they share a similar fold containing an amyloid key motif. The observed fibril structures differ from previously described conformations of TDP-43 fibrils and help to better understand the structural landscape of the amyloid fibril structures derived from this protein.


  • Organizational Affiliation

    Institute of Protein Biochemistry, Ulm University, 89081, Ulm, Germany. kartikay.sharma@uni-ulm.de.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
TAR DNA-binding protein 43
A, B, C, D, E
A, B, C, D, E, F, G, H, I, J, K, L
414Homo sapiensMutation(s): 0 
Gene Names: TARDBPTDP43
UniProt & NIH Common Fund Data Resources
Find proteins for Q13148 (Homo sapiens)
Explore Q13148 
Go to UniProtKB:  Q13148
PHAROS:  Q13148
GTEx:  ENSG00000120948 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ13148
Sequence Annotations
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.76 Å
  • Aggregation State: HELICAL ARRAY 
  • Reconstruction Method: HELICAL 
EM Software:
TaskSoftware PackageVersion
MODEL REFINEMENTPHENIX1.20-4459
RECONSTRUCTIONRELION3.1.1

Structure Validation

View Full Validation Report



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
Not funded--

Revision History  (Full details and data files)

  • Version 1.0: 2024-01-24
    Type: Initial release