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Open Access Getting Ready to Translate: Cytoplasmic Maturation of Eukaryotic Ribosomes

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The ribosome is the 'universal ribozyme' that is responsible for the final step of decoding genetic information into proteins. While the function of the ribosome is being elucidated at the atomic level, in comparison, little is known regarding its assembly in vivo and intracellular transport. In contrast to prokaryotic ribosomes, the construction of eukaryotic ribosomes, which begins in the nucleolus, requires >200 evolutionary conserved non-ribosomal trans-acting factors, which transiently associate with pre-ribosomal subunits at distinct assembly stages and perform specific maturation steps. Notably, pre-ribosomal subunits are transported to the cytoplasm in a functionally inactive state where they undergo maturation prior to entering translation. In this review, I will summarize our current knowledge of the eukaryotic ribosome assembly pathway with emphasis on cytoplasmic maturation events that render pre-ribosomal subunits translation competent.

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Keywords: CYTOPLASMIC MATURATION OF RIBOSOMES; NUCLEAR TRANSPORT; RIBOSOME BIOGENESIS; RIBOSOME EXPORT

Document Type: Research Article

Affiliations: Institute of Biochemistry (IBC) ETH Zürich, Schafmattstrasse 18, CH-8093 Zürich, Switzerland

Publication date: October 1, 2011

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  • International Journal for Chemistry and Official Membership Journal of the Swiss Chemical Society (SCS) and its Divisions

    CHIMIA, a scientific journal for chemistry in the broadest sense, is published 10 times a year and covers the interests of a wide and diverse readership. Contributions from all fields of chemistry and related areas are considered for publication in the form of Review Articles and Notes. A characteristic feature of CHIMIA are the thematic issues, each devoted to an area of great current significance.

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