ArticleCell biology international2018
Mitochondrial ribosome bL34 mutants present diminished translation of cytochrome c oxidase subunits.
Article in Cell biology international, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.
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Who cites it
5 citing papers in PubMed, 8 citations in OpenAlex.
- Triacylglycerol mobilization underpins mitochondrial stress recovery.Nature cell biology · 2025Article
- The zinc finger motif in the mitochondrial large ribosomal subunit protein bL36m is essential for optimal yeast mitoribosome assembly and function.Biochimica et biophysica acta. Molecular cell research · 2024Article
- Functional analyses of mitoribosome 54S subunit devoid of mitochondria-specific protein sequences.Yeast (Chichester, England) · 2022Article
- Translational activators and mitoribosomal isoforms cooperate to mediate mRNA-specific translation in Schizosaccharomyces pombe mitochondria.Nucleic acids research · 2021Article
- The mitoribosome-specific protein mS38 is preferentially required for synthesis of cytochrome c oxidase subunits.Nucleic acids research · 2019Article
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Authors and funding
6 authors at 3 institutions in 2 countries.
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Abstract
Saccharomyces cerevisiae mitoribosomes are specialized in the translation of a few number of highly hydrophobic membrane proteins, components of the oxidative phosphorylation system. Mitochondrial characteristics, such as the membrane system and its redox state driven mitoribosomes evolution through great diversion from their bacterial and cytosolic counterparts. Therefore, mitoribosome presents a considerable number of mitochondrial-specific proteins, as well as new protein extensions. In this work we characterize temperature sensitive mutants of the subunit bL34 present in the 54S large subunit. Although bL34 has bacterial homologs, in yeast it has a long 65 aminoacids mitochondrial N-terminal addressing sequence, here we demonstrate that it can be replaced by the mitochondrial addressing sequence of Neurospora crassa ATP9 gene. The bL34 temperature sensitive mutants present lowered translation of mitochondrial COX1 and COX3, which resulted in reduced cytochrome c oxidase activity and respiratory growth deficiency. The sedimentation properties of bL34 in sucrose gradients suggest that similarly to its bacterial homolog, bL34 is also a later participant in the process of mitoribosome biogenesis.
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