Cited by 50RNA and protein synthesis mechanismsRNA modifications and cancerDNA and Nucleic Acid Chemistry

Nucleotide modifications and tRNA anticodon–mRNA codon interactions on the ribosome

Open access
Allnér, Olof, Nilsson, Lennart·2011·RNA

Abstract

We have carried out molecular dynamics simulations of the tRNA anticodon and mRNA codon, inside the ribosome, to study the effect of the common tRNA modifications cmo 5 U34 and m 6 A37. In tRNA Val, these modifications allow all four nucleotides to be successfully read at the wobble position in a codon. Previous data suggest that entropic effects are mainly responsible for the extended reading capabilities, but detailed mechanisms have remained unknown. We have performed a wide range of simulations to elucidate the details of these mechanisms at the atomic level and quantify their effects: extensive free energy perturbation coupled with umbrella sampling, entropy calculations of tRNA (free and bound to the ribosome), and thorough structural analysis of the ribosomal decoding center. No prestructuring effect on the tRNA anticodon stem–loop from the two modifications could be observed, but we identified two mechanisms that may contribute to the expanded decoding capability by the modifications: The further reach of the cmo 5 U34 allows an alternative outer conformation to be formed for the noncognate base pairs, and the modification results in increased contacts between tRNA, mRNA, and the ribosome.

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Integrity signals

Registry

Crossref · 10.1261/rna.029231.111

Cites

62 of 62 references verified0 citation errors · 0 not checkable

Statistics

Claims the paper makes

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Claims other papers make about this one

Each is checked against this paper’s own text: does it say what the citing paper says it does?

  • Accurate decoding of the codons for the weak amino acids requires an extended anticodon with a modified base in the tRNA molecule, which could be an additional argument for the late arrival of these amino acids in the code.

    “Accurate decoding of the codons for the latter group requires an extended anticodon with a modified base in the tRNA molecule (2), which could be an additional argument for the late arrival of these amino acids in the code.”

    From Origin and Evolution of the Universal Genetic Code (2017) · cites this paper as [2]

    The Introduction (page unavailable) says tRNA modifications affect codon recognition, and the Conclusions (page unavailable) describe how modified bases in valine tRNA expand wobble-position decoding. The paper does not establish that accurate decoding of codons for the cited group of amino acids requires an extended anticodon with a modified base. The late-arrival argument follows the citation and is the citing authors’ inference, not a finding attributed to this source. (LLM, conf=0.84)

    Experimental — accuracy not yet measured

Self-check

Percentages, sums and reported differences re-computed from the paper’s own numbers.

The self-check needs the paper’s full text.

Cites

Flagged first, then by citations

1 of the 63 references couldn’t be matched to a known paper.

Research works printed but not linked: 2

  1. 10.1002/(sici)1096-987x(20000130)21:2<105::aid-jcc3>3.0.co;2-p · DOI
  2. 1998, CHARMM: The energy function and its parameterization with an overview of the program, Vol. 1, 271

Cited by

Sorted by citations

Authors
Allnér, O., & Nilsson, L.
Affiliations
Karolinska Institutet (SE)
Venue
RNA
Published
2011-10-25
Volume
17
Issue
12
Pages
2177-2188
ISSN
  • 1355-8382 (ISSN-L)
  • 1469-9001
OpenAlex
W2122260546
Cited by
50
References
63
Citations by year
2026: 3 · 2024: 4 · 2022: 4 · 2021: 3 · 2020: 3 · 2019: 5 · 2018: 4 · 2017: 8 · 2016: 7 · 2015: 2 · 2014: 1 · 2013: 2 · 2012: 4
FWCI
0.91
Type
journal article
Language
en
Open access
Locations
  • RNA (publishedVersion)
  • Europe PMC (PubMed Central) (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
Vetenskapsrådet
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
tRNA anticodon, ribosome, wobble pairing, tRNA modification, 5-methyluridine, N6-methyladenosine, tRNAVal, entropic effects, free energy perturbation, umbrella sampling
MeSH terms
Anticodon, Binding Sites, Codon, Hydrogen Bonding, Models, Molecular, Nucleic Acid Conformation, Nucleotides, Ribosomes, RNA, Messenger, RNA, Transfer, Base Pairing, Molecular Dynamics Simulation

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review