6QJQ image
Deposition Date 2019-01-24
Release Date 2019-02-20
Last Version Date 2024-05-15
Entry Detail
PDB ID:
6QJQ
Keywords:
Title:
Cryo-EM structure of heparin-induced 2N3R tau filaments
Biological Source:
Source Organism:
Homo sapiens (Taxon ID: 9606)
Method Details:
Experimental Method:
Resolution:
3.70 Å
Aggregation State:
FILAMENT
Reconstruction Method:
SINGLE PARTICLE
Macromolecular Entities
Polymer Type:polypeptide(L)
Molecule:Microtubule-associated protein tau
Gene (Uniprot):MAPT
Chain IDs:A, B, C, D, E, F
Chain Length:28
Number of Molecules:6
Biological Source:Homo sapiens
Ligand Molecules
Primary Citation
Heparin-induced tau filaments are polymorphic and differ from those in Alzheimer's and Pick's diseases.
Elife 8 ? ? (2019)
PMID: 30720432 DOI: 10.7554/eLife.43584

Abstact

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.

Legend

Protein

Chemical

Disease

Primary Citation of related structures