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May 29, 2026Proceedings of the National Academy of Sciences0 citations

Plants Manage High Rates of Plastid Mistranslation Through Regulated Proteostasis

Plants tolerate substantial rates of plastid mistranslation via regulated proteostasis

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Authors

BBB BrandtSSSebastian SchwartzSSSerena Schwenkert

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Overview

Randomized trial investigates plastid mistranslation effects in plants, indicating unique compensation mechanisms.

Key Points

  • This research aims to understand how plant cells tolerate mistranslation of proteins in plastids and mitochondria.
  • Analyzed Arabidopsis mutants with altered GatCAB activity to assess mistranslation rates.
  • Conducted proteomics analyses to compare misincorporation rates in organellar-expressed protein complexes.
  • Investigated temperature stress effects on Gln-to-Glu misincorporation in wild-type and hypermistranslating mutants.
  • In mutants, high plastid and low mitochondrial Gln-to-Glu misincorporation rates were observed.
  • Only modest changes in protein abundance were noted in plastids and none in mitochondria.
  • Wild-type plants under temperature stress exhibited altered Gln-to-Glu misincorporation rates.

Cite This Study

Brandt et al. (2026) studied this question.

synapsesocial.com/papers/6a192f1bfab5b468c4418760https://doi.org/10.1073/pnas.2537357123
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