Cited by 312RNA and protein synthesis mechanismsRNA modifications and cancerDNA and Nucleic Acid Chemistry

Structural aspects of messenger RNA reading frame maintenance by the ribosome

Jenner, Lasse B, Demeshkina, Natalia, Yusupova, Gulnara, Yusupov, Marat·2010·Nature Structural & Molecular Biology

Abstract

One key question in protein biosynthesis is how the ribosome couples mRNA and tRNA movements to prevent disruption of weak codon-anticodon interactions and loss of the translational reading frame during translocation. Here we report the complete path of mRNA on the 70S ribosome at the atomic level (3.1-A resolution), and we show that one of the conformational rearrangements that occurs upon transition from initiation to elongation is a narrowing of the downstream mRNA tunnel. This rearrangement triggers formation of a network of interactions between the mRNA downstream of the A-site codon and the elongating ribosome. Our data elucidate the mechanism by which hypermodified nucleoside 2-methylthio-N6 isopentenyl adenosine at position 37 (ms(2)i(6)A37) in tRNA(Phe)(GAA) stabilizes mRNA-tRNA interactions in all three tRNA binding sites. Another network of contacts is formed between this tRNA modification and ribosomal elements surrounding the mRNA E/P kink, resulting in the anchoring of P-site tRNA. These data allow rationalization of how modification deficiencies of ms(2)i(6)A37 in tRNAs may lead to shifts of the translational reading frame.

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Registry

Crossref · 10.1038/nsmb.1790

Cites

45 of 45 references verified0 citation errors · 0 not checkable

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  • The structure of the 70S ribosome from Thermus thermophilus has >3000 modeled cations, all but 3 initially assigned as Mg2+.

    “The structure of the 70S ribosome from Thermus thermophilus (PDB 4 V6F)51 has >3000 modeled cations (c). All but 3 of these were initially assigned as Mg2+.”
  • >3000 cation-binding sites were visualized in the Thermus thermophilus 70S ribosome and assigned as Mg2+, but those assignments have been challenged on experimental and stereochemical grounds.

    “As an upper limit, > 3000 cation-binding sites were visualized in the Thermus thermophilus 70S ribosome51 and assigned as Mg2+, but those assignments have been challenged on both experimental52 and stereochemical54 grounds.”
  • Tetracycline binding at the second site has not been previously described.

    “Tetracycline binding at this position has not been previously described (17 -20).”

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Authors
Jenner, L. B., Demeshkina, N., Yusupova, G., & Yusupov, M.
Affiliations
  • Institut de génétique et de biologie moléculaire et cellulaire (FR)
  • Centre National de la Recherche Scientifique (FR)
Venue
Nature Structural & Molecular Biology
Published
2010-04-18
Volume
17
Issue
5
Pages
555-560
ISSN
  • 1545-9985 (ISSN-L)
  • 1545-9993
OpenAlex
W2073504319
Cited by
312
References
45
Citations by year
2026: 6 · 2025: 9 · 2024: 13 · 2023: 16 · 2022: 14 · 2021: 10 · 2020: 22 · 2019: 16 · 2018: 22 · 2017: 21 · 2016: 26 · 2015: 23 · 2014: 28 · 2013: 30 · 2012: 28
FWCI
11.20
Type
journal article
Language
en
Open access
closed
Locations
  • Nature Structural & Molecular Biology (publishedVersion)
  • PubMed (publishedVersion)
  • HAL (submittedVersion)
  • DORA PSI (Paul Scherrer Institute) (submittedVersion)
Funders
Agence Nationale de la Recherche (ANR-07-PCVI-0015)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › RNA and protein synthesis mechanisms
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › RNA modifications and cancer
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › DNA and Nucleic Acid Chemistry
Keywords
ribosome, codon-anticodon pairing, 70S ribosome, tRNA modification, tRNA-Phe, ribosome structure, translational readthrough
MeSH terms
Escherichia coli, Models, Molecular, Nucleic Acid Conformation, RNA, Bacterial, RNA, Messenger, RNA, Transfer, Reading Frames, Thermus thermophilus, Crystallography, X-Ray, Ribosome Subunits

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