The C-terminal extension domain of <i>Saccharomyces cerevisiae</i> MrpL32, a homolog of ribosomal protein L32, functions <i>in</i> <i>trans</i> to support mitochondrial translation
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- Woogeng Ivo Ngundu
- Department of Biology, Faculty of Science, Kobe University
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- Kitakawa Madoka
- Department of Biology, Faculty of Science, Kobe University
Bibliographic Information
- Other Title
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- The C-terminal extension domain of Saccharomyces cerevisiae MrpL32, a homolog of ribosomal protein L32, functions in trans to support mitochondrial translation
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Abstract
<p>Mitochondrial ribosomal protein L32 (MrpL32) of Saccharomyces cerevisiae is homologous to the bacterial L32 ribosomal protein. MrpL32 carries an N-terminal mitochondrion-targeting sequence (MTS) and is about 60 amino acid residues longer at the C-terminus. Adding to its function as a leader sequence, the MTS of MrpL32 has been reported to regulate ribosome biogenesis through its processing by m-AAA protease. However, the function of the C-terminal extension (CE) remains totally unknown. Therefore, we constructed a series of C-terminally truncated mrpl32 (mrpl32ΔC) genes and expressed them in a Δmrpl32 mutant to examine their function. Interestingly, some MrpL32ΔC derivatives exhibited temperature-sensitive (ts) growth on medium with non-fermentable carbon sources. Furthermore, the CE domain of MrpL32, expressed separately from MrpL32ΔC, could rescue the ts phenotype of mutants by improving mitochondrial protein synthesis.</p>
Journal
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- Genes & Genetic Systems
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Genes & Genetic Systems 93 (1), 21-24, 2018-02-01
The Genetics Society of Japan
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Details 詳細情報について
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- CRID
- 1390001288043555968
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- NII Article ID
- 130007404292
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- NII Book ID
- AA11077421
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- ISSN
- 18805779
- 13417568
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- NDL BIB ID
- 029217011
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- PubMed
- 29343666
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- Text Lang
- en
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- Data Source
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- JaLC
- NDL
- Crossref
- PubMed
- CiNii Articles
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- Abstract License Flag
- Disallowed