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- W3166804922 abstract "Abstract Pseudouridine, the most abundant form of RNA modification, is known to play important roles in ribosome function. Mutations in human DKC1, the pseudouridine synthase responsible for catalyzing the ribosome RNA modification, cause translation deficiencies and are associated with a complex cancer predisposition. The structural basis for how pseudouridine impacts ribosome function remains uncharacterized. Here we report electron cryomicroscopy structures of a fully modified and a pseudouridine-free ribosome from Saccharomyces cerevisiae . In the modified ribosome, the rearranged N1 atom of pseudouridine is observed to stabilize key functional motifs by establishing predominately water-mediated close contacts with the phosphate backbone. The pseudouridine-free ribosome, however, is devoid of such interactions and displays conformations reflective of abnormal inter-subunit movements. The erroneous motions of the pseudouridine-free ribosome may explain its observed deficiencies in translation." @default.
- W3166804922 created "2021-06-22" @default.
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- W3166804922 date "2021-06-02" @default.
- W3166804922 modified "2023-10-15" @default.
- W3166804922 title "Pseudouridine-free Ribosome Exhibits Distinct Inter-subunit Movements" @default.
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- W3166804922 doi "https://doi.org/10.1101/2021.06.02.446812" @default.
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