Not4-dependent targeting of MMF1 mRNA to mitochondria limits its expression via ribosome pausing, Egd1 ubiquitination, Caf130, no-go-decay and autophagy
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| Název: | Not4-dependent targeting of MMF1 mRNA to mitochondria limits its expression via ribosome pausing, Egd1 ubiquitination, Caf130, no-go-decay and autophagy |
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| Autoři: | Chen, Siyu, Allen, George Edward, Panasenko, Olesya, Collart, Martine |
| Zdroj: | Nucleic Acids Res |
| Informace o vydavateli: | Oxford University Press (OUP), 2023. |
| Rok vydání: | 2023 |
| Témata: | Autophagy / genetics, Saccharomyces cerevisiae Proteins, RNA, Messenger / metabolism, Ribosomes / metabolism, Saccharomyces cerevisiae, Ribosomes / genetics, Mitochondrial Proteins, Saccharomyces cerevisiae Proteins / genetics, Autophagy, Saccharomyces cerevisiae / metabolism, RNA, Messenger, Mitochondrial Proteins / genetics, Molecular Biology, Saccharomyces cerevisiae Proteins / metabolism, Membrane Proteins / genetics, RNA, Messenger / genetics, Mitochondria / metabolism, Ubiquitination, Membrane Proteins, Mitochondria, Mitochondria / genetics, Mitochondrial Proteins / metabolism, Saccharomyces cerevisiae / genetics, Ribosomes |
| Popis: | The Ccr4–Not complex is a conserved multi protein complex with diverse roles in the mRNA life cycle. Recently we determined that the Not1 and Not4 subunits of Ccr4–Not inversely regulate mRNA solubility and thereby impact dynamics of co-translation events. One mRNA whose solubility is limited by Not4 is MMF1 encoding a mitochondrial matrix protein. In this work we uncover a mechanism that limits MMF1 overexpression and depends upon its co-translational targeting to the mitochondria. We have named this mechanism Mito-ENCay. This mechanism relies on Not4 promoting ribosome pausing during MMF1 translation, and hence the co-translational docking of the MMF1 mRNA to mitochondria via the mitochondrial targeting sequence of the Mmf1 nascent chain, the Egd1 chaperone, the Om14 mitochondrial outer membrane protein and the co-translational import machinery. Besides co-translational Mitochondrial targeting, Mito-ENCay depends upon Egd1 ubiquitination by Not4, the Caf130 subunit of the Ccr4–Not complex, the mitochondrial outer membrane protein Cis1, autophagy and no-go-decay. |
| Druh dokumentu: | Article Conference object Other literature type |
| Popis souboru: | application/pdf |
| Jazyk: | English |
| ISSN: | 1362-4962 0305-1048 |
| DOI: | 10.1093/nar/gkad299 |
| Přístupová URL adresa: | https://pubmed.ncbi.nlm.nih.gov/37094076 https://archive-ouverte.unige.ch/unige:172792 https://doi.org/10.1093/nar/gkad299 |
| Rights: | CC BY URL: http://creativecommons.org/licenses/by/4.0/This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted reuse, distribution, and reproduction in any medium, provided the original work is properly cited. |
| Přístupové číslo: | edsair.doi.dedup.....1d1d27051e407de4e83c6647c35eeb00 |
| Databáze: | OpenAIRE |
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Nájsť tento článok vo Web of Science | Abstrakt: | The Ccr4–Not complex is a conserved multi protein complex with diverse roles in the mRNA life cycle. Recently we determined that the Not1 and Not4 subunits of Ccr4–Not inversely regulate mRNA solubility and thereby impact dynamics of co-translation events. One mRNA whose solubility is limited by Not4 is MMF1 encoding a mitochondrial matrix protein. In this work we uncover a mechanism that limits MMF1 overexpression and depends upon its co-translational targeting to the mitochondria. We have named this mechanism Mito-ENCay. This mechanism relies on Not4 promoting ribosome pausing during MMF1 translation, and hence the co-translational docking of the MMF1 mRNA to mitochondria via the mitochondrial targeting sequence of the Mmf1 nascent chain, the Egd1 chaperone, the Om14 mitochondrial outer membrane protein and the co-translational import machinery. Besides co-translational Mitochondrial targeting, Mito-ENCay depends upon Egd1 ubiquitination by Not4, the Caf130 subunit of the Ccr4–Not complex, the mitochondrial outer membrane protein Cis1, autophagy and no-go-decay. |
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| ISSN: | 13624962 03051048 |
| DOI: | 10.1093/nar/gkad299 |