Cited by 782Alzheimer's disease research and treatmentsProtein Structure and DynamicsAmyotrophic Lateral Sclerosis Research

Liquid–liquid phase separation of the microtubule-binding repeats of the Alzheimer-related protein Tau

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Ambadipudi, Susmitha, Biernat, Jacek, Riedel, Dietmar, Mandelkow, Eckhard, Zweckstetter, Markus·2017·Nature Communications

Abstract

The protein Tau aggregates into tangles in the brain of patients with Alzheimer’s disease. In solution, however, Tau is intrinsically disordered, highly soluble, and binds to microtubules. It is still unclear what initiates the conversion from an innocuous phase of high solubility and functionality to solid-like neurotoxic deposits. Here, we show that the microtubule-binding repeats of Tau, which are lysine-rich, undergo liquid–liquid phase separation in solution. Liquid–liquid demixing causes molecular crowding of amyloid-promoting elements of Tau and drives electrostatic coacervation. Furthermore, we demonstrate that three-repeat and four-repeat isoforms of Tau differ in their ability for demixing. Alternative splicing of Tau can thus regulate the formation of Tau-containing membrane-less compartments. In addition, phosphorylation of Tau repeats promotes liquid–liquid phase separation at cellular protein conditions. The combined data propose a mechanism in which liquid droplets formed by the positively charged microtubule-binding domain of Tau undergo coacervation with negatively charged molecules to promote amyloid formation.

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Authors
Ambadipudi, S., Biernat, J., Riedel, D., Mandelkow, E., & Zweckstetter, M.
Affiliations
  • German Center for Neurodegenerative Diseases (DE)
  • Max Planck Institute for Biophysical Chemistry (DE)
  • Max Planck Society (DE)
Corresponding author
Zweckstetter, Markus
Venue
Nature Communications
Published
2017-08-17
Volume
8
Issue
1
Pages
275-275
ISSN
2041-1723 (ISSN-L)
OpenAlex
W2743471889
Cited by
782
References
91
Citations by year
2026: 57 · 2025: 90 · 2024: 100 · 2023: 104 · 2022: 103 · 2021: 103 · 2020: 100 · 2019: 78 · 2018: 42 · 2017: 3 · 2015: 1 · 2014: 1
FWCI
45.11
Type
journal article
Language
en
Open access
Locations
  • Nature Communications (publishedVersion, cc-by)
  • Europe PMC (PubMed Central) (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • MPG.PuRe (Max Planck Society) (submittedVersion, cc-by)
  • RePEc: Research Papers in Economics (submittedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
  • Max Planck Digital Library (submittedVersion, other-oa)
  • GoeScholar The Publication Server of the Georg-August-Universität Göttingen (Georg-August-Universität Göttingen) (submittedVersion, cc-by)
  • DZNE Pub (submittedVersion, cc-by)
  • MPG.PuRe (Max Planck Society) (submittedVersion, other-oa)
Topics
  • Health Sciences › Medicine › Physiology › Alzheimer's disease research and treatments
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Protein Structure and Dynamics
  • Health Sciences › Medicine › Neurology › Amyotrophic Lateral Sclerosis Research
Keywords
tau protein, liquid-liquid phase separation, microtubule-binding repeats, Alzheimer's disease, coacervation, macromolecular crowding, tau isoforms, alternative splicing, tau phosphorylation, amyloid fibril formation, intrinsically disordered proteins, membrane-less compartments, neurofibrillary tangles
MeSH terms
Alzheimer Disease, Amino Acid Sequence, Brain, Humans, Lysine, Microtubules, Magnetic Resonance Spectroscopy, Phosphorylation, Protein Binding, tau Proteins, Alternative Splicing, Microscopy, Confocal, Protein Isoforms, Protein Aggregation, Pathological

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