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- Title
Truncation of the Mrp20 protein reveals new ribosome-assembly subcomplex in mitochondria.
- Authors
Kaur, Jasvinder; Stuart, Rosemary A
- Abstract
Mitochondrial ribosomal protein 20 (Mrp20) is a component of the yeast mitochondrial large (54S) ribosomal subunit and is homologous to the bacterial L23 protein, located at the ribosomal tunnel exit site. The carboxy-terminal mitochondrial-specific domain of Mrp20 was found to have a crucial role in the assembly of the ribosomes. A new, membrane-bound, ribosomal-assembly subcomplex composed of known tunnel-exit-site proteins, an uncharacterized ribosomal protein, MrpL25, and the mitochondrial peroxiredoxin (Prx), Prx1, accumulates in an mrp20ΔC yeast mutant. Finally, data supporting the idea that the inner mitochondrial membrane acts as a platform for the ribosome assembly process are discussed.
- Publication
EMBO reports, 2011, Vol 12, Issue 9, p950
- ISSN
1469-3178
- Publication type
Journal Article
- DOI
10.1038/embor.2011.133