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Cited by 285

The DOI matches its Crossref record; 58 of the 58 references it cites were found in a registry or an index.

Flanking sequences profoundly alter polyglutamine toxicity in yeast

Open access
Duennwald, Martin L., Jagadish, Smitha, Muchowski, Paul J., Lindquist, Susan·2006·Proceedings of the National Academy of Sciences

Abstract

Protein misfolding is the molecular basis for several human diseases. How the primary amino acid sequence triggers misfolding and determines the benign or toxic character of the misfolded protein remains largely obscure. Among proteins that misfold, polyglutamine (polyQ) expansion proteins provide an interesting case: Each causes a distinct neurodegenerative disease that selectively affects different neurons. However, all are broadly expressed and most become toxic when the glutamine expansion exceeds ≈39 glutamine residues. The disease-causing polyQ expansion proteins differ profoundly in the amino acids flanking the polyQ region. We therefore hypothesized that these flanking sequences influence the specific toxic character of each polyQ expansion protein. Using a yeast model, we find that sequences flanking the polyQ region of human huntingtin exon I can convert a benign protein to a toxic species and vice versa. Further, we observe that flanking sequences can direct polyQ misfolding to at least two morphologically distinct types of polyQ aggregates. Very tight aggregates always are benign, whereas amorphous aggregates can be toxic. We thereby establish a previously undescribed systematic characterization of the influence of flanking amino acid sequences on polyQ toxicity.

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Metadata

Authors
Duennwald, M. L., Jagadish, S., Muchowski, P. J., & Lindquist, S.
Venue
Proceedings of the National Academy of Sciences
Published
2006-07-18
Volume
103
Issue
29
Pages
11045-11050
ISSN
  • 0027-8424 (ISSN-L)
  • 1091-6490
OpenAlex
W2131926693
Cited by
285
References
58
FWCI
6.83
Type
journal article
Language
en
Open access
green

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CoChat. (2026). Citation check: Flanking sequences profoundly alter polyglutamine toxicity in yeast. https://app.cochat.ai/papers/10.1073/pnas.0604547103
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Duennwald, M. L., Jagadish, S., Muchowski, P. J., & Lindquist, S. (2006). Flanking sequences profoundly alter polyglutamine toxicity in yeast. Proceedings of the National Academy of Sciences. https://doi.org/10.1073/pnas.0604547103

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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).

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