Evidence map›Paper›PMID 31400913›Full record

ArticleBiophysical journal2019

Polyphosphate Initiates Tau Aggregation through Intra- and Intermolecular Scaffolding.

Sanjula P Wickramasinghe, Justine Lempart, Hope E Merens, Jacob Murphy, Philipp Huettemann, Ursula Jakob, Elizabeth Rhoades

Abstract read
In one paragraph

Article in Biophysical journal, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 30 papers.

0numbers the graph read from it
0cells of the map it votes in
30citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

30 citing papers in PubMed.

  1. Inorganic polyphosphate chelates CaBiochemistry and biophysics reports · 2026
    Article
  2. Article
  3. Article
  4. Review
  5. Article
  6. Inorganic Polyphosphate and Human Diseases.Progress in molecular and subcellular biology · 2026
    Review
  7. Tau4RD fibril polymorphism is imprinted during early aggregation.bioRxiv : the preprint server for biology · 2025
    Article
  8. Article
  9. Inducers and modulators of protein aggregation in Alzheimer's disease - Critical tools for understanding the foundations of aggregate structures.Neurotherapeutics : the journal of the American Society for Experimental NeuroTherapeutics · 2025
    Review
  10. Article
  11. Article
  12. The Protein Scaffolding Functions of Polyphosphate.Journal of molecular biology · 2024
    Review
  13. Review
  14. Article
  15. Review
  16. Article
  17. Biochemistry · 2022
    Article
  18. Review
  19. Article
  20. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

7 authors.

Sanjula P WickramasingheBiochemistry and Molecular Biophysics Graduate Group, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania.
Justine LempartDepartment of Molecular, Cellular, and Developmental Biology, University of Michigan, Ann Arbor, Michigan.
Hope E MerensDepartment of Chemistry, University of Pennsylvania, Philadelphia, Pennsylvania.
Jacob MurphyDepartment of Molecular, Cellular, and Developmental Biology, University of Michigan, Ann Arbor, Michigan.
Philipp HuettemannDepartment of Molecular, Cellular, and Developmental Biology, University of Michigan, Ann Arbor, Michigan.
Ursula JakobDepartment of Molecular, Cellular, and Developmental Biology, University of Michigan, Ann Arbor, Michigan; Department of Biological Chemistry, University of Michigan, Ann Arbor, Michigan.
Elizabeth RhoadesBiochemistry and Molecular Biophysics Graduate Group, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania; Department of Chemistry, University of Pennsylvania, Philadelphia, Pennsylvania. Electronic address: elizabeth.rhoades@sas.upenn.edu.

Funding

Role of Molecular Chaperones in Stress Response and DiseaseR35GM122506 · NIGMS · UNIVERSITY OF MICHIGAN AT ANN ARBOR · PI Ursula H. Jakob · 2017 to 2026
$6.8M
Molecular mechanisms and cellular implications of tau dysfunctionRF1AG053951 · NIA · UNIVERSITY OF PENNSYLVANIA · PI ODDE, DAVID J., RHOADES, ELIZABETH · 2016 to 2018
$2.9M
Role of polyphosphate in Alzheimer's DiseaseR21AG055090 · NIA · UNIVERSITY OF MICHIGAN AT ANN ARBOR · PI JAKOB, URSULA H. · 2017 to 2018
$439k
NIA NIH HHS R21 AG055090NIA NIH HHS RF1 AG053951NIGMS NIH HHS R35 GM122506
6 · The paper itself

Abstract

The aggregation and deposition of tau is a hallmark of a class of neurodegenerative diseases called tauopathies. Despite intensive study, cellular and molecular factors that trigger tau aggregation are not well understood. Here, we provide evidence for two mechanisms relevant to the initiation of tau aggregation in the presence of cytoplasmic polyphosphates (polyP): changes in the conformational ensemble of monomer tau and noncovalent cross-linking of multiple tau monomers. We identified conformational changes throughout full-length tau, most notably diminishment of long-range interactions between the termini coupled with compaction of the microtubule binding and proline- rich regions. We found that while the proline-rich and microtubule binding regions both contain polyP binding sites, the proline-rich region is a requisite for compaction of the microtubule binding region upon binding. Additionally, both the magnitude of the conformational change and the aggregation of tau are dependent on the chain length of the polyP polymer. Longer polyP chains are more effective at intermolecular, noncovalent cross-linking of tau. These observations provide an understanding of the initial steps of tau aggregation through interaction with a physiologically relevant aggregation inducer.

Indexed as

Protein AggregatesBinding SitesHumansMicrotubulesMutationPolyphosphatesProline-Rich Protein DomainsProtein BindingSingle Molecule Imagingtau ProteinsPolyphosphatesProtein Aggregatestau Proteins

Identifiers

PMID31400913
PMCPMC6712485

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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.