ArticleJournal of neuroscience research2020
Degron capability of the hydrophobic C-terminus of the polyglutamine disease protein, ataxin-3.
Article in Journal of neuroscience research, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.
What it found
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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.
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Who cites it
6 citing papers in PubMed, 9 citations in OpenAlex.
- Progressive degeneration in a new Drosophila model of spinocerebellar ataxia type 7.Scientific reports · 2024Article
- Progressive degeneration in a newResearch square · 2023Article
- Lysine 117 on ataxin-3 modulates toxicity in Drosophila models of Spinocerebellar Ataxia Type 3.Journal of the neurological sciences · 2023Article
- Phenotypic defects from the expression of wild-type and pathogenic TATA-binding proteins in new Drosophila models of Spinocerebellar Ataxia Type 17.G3 (Bethesda, Md.) · 2023Article
- A survey of protein interactions and posttranslational modifications that influence the polyglutamine diseases.Frontiers in molecular neuroscience · 2022Review
- Ubiquitin-binding site 1 of pathogenic ataxin-3 regulates its toxicity inFrontiers in neuroscience · 2022Article
Corrections and comments
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Authors and funding
5 authors at 1 institution in 1 country.
Funding
Abstract
Ataxin-3 is a deubiquitinase and polyglutamine disease protein whose cellular properties and functions are not entirely understood. Mutations in ataxin-3 cause spinocerebellar ataxia type 3 (SCA3), a neurodegenerative disorder that is a member of the polyglutamine family of diseases. Two major isoforms arise from alternative splicing of ATXN3 and are differently toxic in vivo as a result of faster proteasomal degradation of one isoform compared to the other. The isoforms vary only at their C-termini, suggesting that the hydrophobic C-terminus of the more quickly degraded form of ataxin-3 (here referred to as isoform 2) functions as a degron-that is, a peptide sequence that expedites the degradation of its host protein. We explored this notion in this study and present evidence that: (a) the C-terminus of ataxin-3 isoform 2 signals its degradation in a proteasome-dependent manner, (b) this effect from the C-terminus of isoform 2 does not require the ubiquitination of ataxin-3, and (c) the isolated C-terminus of isoform 2 can enhance the degradation of an unrelated protein. According to our data, the C-terminus of ataxin-3 isoform 2 is a degron, increasing overall understanding of the cellular properties of the SCA3 protein.
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