Evidence map›Paper›PMID 19296713›Full record

ArticleBiochemistry2009

Dynamics and stability of individual base pairs in two homologous RNA-DNA hybrids.

Yuegao Huang, Congju Chen, Irina M Russu

Open access · greenAbstract read
In one paragraph

Article in Biochemistry, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 21 papers.

0numbers the graph read from it
0cells of the map it votes in
21citing papers in PubMed
0.8field-weighted citation impact, top 29% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

21 citing papers in PubMed, 33 citations in OpenAlex.

  1. Article
  2. Controlling DNA-RNA strand displacement kinetics with base distribution.Proceedings of the National Academy of Sciences of the United States of America · 2025
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  20. R loops stimulate genetic instability of CTG.CAG repeats.Proceedings of the National Academy of Sciences of the United States of America · 2010
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

3 authors at 1 institution in 1 country.

Yuegao HuangDepartment of Chemistry and Molecular Biophysics Program, Wesleyan University, Middletown, Connecticut 06459, USA.
Congju Chen
Irina M Russu
Wesleyan University · US

Funding

DOCTORAL STUDIES IN MOLECULAR BIOPHYSICST32GM008271 · NIGMS · WESLEYAN UNIVERSITY · PI BEVERIDGE, DAVID LEWIS · 1988 to 2015
$1.8M
Structural Energetics of a RNA Transcription SwitchR15GM077188 · NIGMS · WESLEYAN UNIVERSITY · PI RUSSU, IRINA M · 2006 to 2006
$242k
NIGMS NIH HHS GM077188NIGMS NIH HHS R15 GM077188NIGMS NIH HHS T32 GM008271
6 · The paper itself

Abstract

Nuclear magnetic resonance spectroscopy and proton exchange have been used to characterize two RNA-DNA hybrids from the tR2 intrinsic transcription terminator site of phage lambda. The hybrids have the same base sequence [5'-GGCGCAGGCC(T/U)(T/U)CC-3'/5'-GGAAGGCC(T/U)GCGCC-3'] but differ from each other by an interchange of DNA and RNA strands. The opening of single base pairs in the two hybrids is characterized by measuring the rates of exchange of imino protons with solvent protons as a function of the concentration of a proton acceptor (ammonia base) at 10 degrees C. The free energy change in the opening reaction provides a measure of the stability of the base pair, while the rates of opening and closing define the base pair dynamics. The results demonstrate that, within the same base sequence context, dA-rU base pairs are less stable than dT-rA base pairs. The differences in stability are enhanced when two dA-rU base pairs are located next to each other in the hybrid structure. For the G-C base pairs, the rates of opening and closing and the stability are affected by the base sequence context and by the nature of the sugar moiety attached to the guanine. The dominant feature of the base sequence is the proximity of the dA-rU base pair, which destabilizes the G-C base pair when the guanine is located on the DNA strand. Two G-C base pairs (namely, those in the fourth and 10th positions) exhibit large differences in their opening and closing rates between the two hybrids, while maintaining the same stability. These results provide the first demonstration that, for RNA-DNA hybrid structures with the same base sequence, the opening dynamics and the stability of individual base pairs are strongly influenced by the chemical nature of each strand.

Indexed as

Nucleic Acid HybridizationBase SequenceDNANuclear Magnetic Resonance, BiomolecularRNADNARNA

Identifiers

PMID19296713
PMCPMC2758270
OpenAlexW2008619193

What OpenQuestion holds

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Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.