6QJM | pdb_00006qjm

Cryo-EM structure of heparin-induced 2N4R tau twister filaments

• PDB DOI: https://doi.org/10.2210/pdb6QJM/pdb
• EM Map EMD-4564: EMDB EMDataResource

• Classification: PROTEIN FIBRIL
• Organism(s): Homo sapiens
• Expression System: Escherichia coli BL21(DE3)
• Mutation(s): No 


• Deposited: 2019-01-24 Released: 2019-02-27 
• Deposition Author(s): Zhang, W., Falcon, B., Murzin, A.G., Fan, J., Crowther, R.A., Goedert, M., Scheres, S.H.W.
• Funding Organization(s): Medical Research Council (United Kingdom)

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Experimental Data Snapshot

• Method: ELECTRON MICROSCOPY
• Resolution: 3.30 Å
• Aggregation State: FILAMENT 
• Reconstruction Method: SINGLE PARTICLE 

Literature

Heparin-induced tau filaments are polymorphic and differ from those in Alzheimer's and Pick's diseases.

Zhang, W., Falcon, B., Murzin, A.G., Fan, J., Crowther, R.A., Goedert, M., Scheres, S.H.

(2019) Elife 8

• PubMed: 30720432 
• DOI: https://doi.org/10.7554/eLife.43584
• Primary Citation Related Structures: 
  6QJH, 6QJM, 6QJP, 6QJQ


• PubMed Abstract: 
  

  Assembly of microtubule-associated protein tau into filamentous inclusions underlies a range of neurodegenerative diseases. Tau filaments adopt different conformations in Alzheimer's and Pick's diseases. Here, we used cryo- and immuno- electron microscopy to characterise filaments that were assembled from recombinant full-length human tau with four (2N4R) or three (2N3R) microtubule-binding repeats in the presence of heparin. 2N4R tau assembles into multiple types of filaments, and the structures of three types reveal similar 'kinked hairpin' folds, in which the second and third repeats pack against each other. 2N3R tau filaments are structurally homogeneous, and adopt a dimeric core, where the third repeats of two tau molecules pack in a parallel manner. The heparin-induced tau filaments differ from those of Alzheimer's or Pick's disease, which have larger cores with different repeat compositions. Our results illustrate the structural versatility of amyloid filaments, and raise questions about the relevance of in vitro assembly.

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Organizational Affiliation: 
• MRC Laboratory of Molecular Biology, Cambridge, United Kingdom.

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Homo 3-mer - A3 

Biological assembly 1 assigned by authors and generated by PISA (software)

Biological Assembly Evidence: assay for oligomerization, microscopy

Macromolecule Content 

• Total Structure Weight: 15.57 kDa 
• Atom Count: 846 
• Modeled Residue Count: 111 
• Deposited Residue Count: 144 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Microtubule-associated protein tau	A, B, C	48	Homo sapiens	Mutation(s): 0  Gene Names: MAPT, MAPTL, MTBT1, TAU
UniProt & NIH Common Fund Data Resources
Find proteins for P10636 (Homo sapiens) Explore P10636  Go to UniProtKB:  P10636
PHAROS:  P10636 GTEx:  ENSG00000186868

Experimental Data & Validation

Experimental Data

• Method: ELECTRON MICROSCOPY
• Resolution: 3.30 Å
• Aggregation State: FILAMENT 
• Reconstruction Method: SINGLE PARTICLE 

EM Software:

Task	Software Package	Version
RECONSTRUCTION	RELION	3.0
MODEL REFINEMENT	REFMAC	5.8.0236
MODEL REFINEMENT	PHENIX	dev-2919-000

Structure Validation

Entry History 

& Funding Information

Deposition Data

• Released Date: 2019-02-27 
Deposition Author(s): Zhang, W., Falcon, B., Murzin, A.G., Fan, J., Crowther, R.A., Goedert, M., Scheres, S.H.W.

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Funding Organization	Location	Grant Number
Medical Research Council (United Kingdom)	United Kingdom	MC_UP_A025_1013
Medical Research Council (United Kingdom)	United Kingdom	MC_U105184291

Revision History  

• Version 1.0: 2019-02-27
  Type: Initial release
  
• Version 1.1: 2024-05-15
  Changes: Data collection, Database references