Evidence map›Paper›PMID 21729350›Full record

ArticleQuarterly reviews of biophysics2011

A new way to see RNA.

Kevin S Keating, Elisabeth L Humphris, Anna Marie Pyle

Open access · greenAbstract read
In one paragraph

Article in Quarterly reviews of biophysics, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 23 papers.

0numbers the graph read from it
0cells of the map it votes in
23citing papers in PubMed
0.4field-weighted citation impact, top 37% 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

23 citing papers in PubMed, 33 citations in OpenAlex.

  1. Article
  2. Article
  3. On the Completeness of Existing RNA Fragment Structures.Genomics, proteomics & bioinformatics · 2025
    Article
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  9. Origins of Life: The Protein Folding Problem all over again?Proceedings of the National Academy of Sciences of the United States of America · 2024
    Article
  10. Article
  11. Article
  12. The pseudotorsional space of RNA.RNA (New York, N.Y.) · 2023
    Article
  13. Article
  14. Article
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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 2 institutions in 1 country.

Kevin S KeatingDepartment of Molecular, Cellular and Developmental Biology, Yale University, New Haven, CT 06511, USA.
Elisabeth L Humphris
Anna Marie Pyle
Yale University · USHoward Hughes Medical Institute · US

Funding

MEDICAL INFORMATICS RESEARCH TRAINING AT YALET15LM007056 · NLM · YALE UNIVERSITY · PI Mark Bender Gerstein, LUCILA OHNO-MACHADO · 1987 to 2026
$22.2M
STUCTURE AND FUNCTION OF GROUP II INTRONSR01GM050313 · NIGMS · YALE UNIVERSITY · PI PYLE, ANNA MARIE · 1994 to 2016
$4.6M
Howard Hughes Medical InstituteNIGMS NIH HHS GM50313NIGMS NIH HHS R01 GM050313NLM NIH HHS T15 LM007056NLM NIH HHS T15 LM07056
6 · The paper itself

Abstract

Unlike proteins, the RNA backbone has numerous degrees of freedom (eight, if one counts the sugar pucker), making RNA modeling, structure building and prediction a multidimensional problem of exceptionally high complexity. And yet RNA tertiary structures are not infinite in their structural morphology; rather, they are built from a limited set of discrete units. In order to reduce the dimensionality of the RNA backbone in a physically reasonable way, a shorthand notation was created that reduced the RNA backbone torsion angles to two (η and θ, analogous to φ and ψ in proteins). When these torsion angles are calculated for nucleotides in a crystallographic database and plotted against one another, one obtains a plot analogous to a Ramachandran plot (the η/θ plot), with highly populated and unpopulated regions. Nucleotides that occupy proximal positions on the plot have identical structures and are found in the same units of tertiary structure. In this review, we describe the statistical validation of the η/θ formalism and the exploration of features within the η/θ plot. We also describe the application of the η/θ formalism in RNA motif discovery, structural comparison, RNA structure building and tertiary structure prediction. More than a tool, however, the η/θ formalism has provided new insights into RNA structure itself, revealing its fundamental components and the factors underlying RNA architectural form.

Indexed as

Models, MolecularNucleic Acid ConformationCluster AnalysisComputer SimulationDatabases, Nucleic AcidHumansMolecular StructureNucleotidesRNANucleotidesRNA

Identifiers

PMID21729350
PMCPMC4410278
OpenAlexW2097511300

What OpenQuestion holds

Textmetadata
LicenceTDM
Read underepoch 390

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.