Evidence map›Paper›PMID 31015431›Full record

ArticleNature communications2019

RNA G-quadruplex is resolved by repetitive and ATP-dependent mechanism of DHX36.

Ramreddy Tippana, Michael C Chen, Natalia A Demeshkina, Adrian R Ferré-D'Amaré, Sua Myong

Open access · goldAbstract read
In one paragraph

Article in Nature communications, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 50 papers.

0numbers the graph read from it
0cells of the map it votes in
50citing papers in PubMed
3.9field-weighted citation impact, top 5% 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

50 citing papers in PubMed, 78 citations in OpenAlex.

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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

5 authors at 3 institutions in 2 countries.

Ramreddy TippanaDepartment of Biophysics, Johns Hopkins University, Baltimore, MD, 21218, USA.
Michael C ChenDepartment of Chemistry, University of Cambridge, Cambridge, CB2 1TN, UK.
Natalia A DemeshkinaBiochemistry and Biophysics Center, National Heart, Lung and Blood Institute, Bethesda, MD, 20892, USA.
Adrian R Ferré-D'AmaréBiochemistry and Biophysics Center, National Heart, Lung and Blood Institute, Bethesda, MD, 20892, USA.
Sua MyongDepartment of Biophysics, Johns Hopkins University, Baltimore, MD, 21218, USA. smyong@jhu.edu.ORCID http://orcid.org/0000-0001-9098-3423
Johns Hopkins University · USNational Heart Lung and Blood Institute · USUniversity of Cambridge · GB

Funding

RNA: Structure, Biophysics and PhysiologyZIAHL006102 · NHLBI · NATIONAL HEART, LUNG, AND BLOOD INSTITUTE · PI FERRÉ-D'AMARÉ, ADRIAN · 2011 to 2025
$14.6M
Quantitative Analysis of G-Quadruplex Folding and its Role in Gene ExpressionR01GM115631 · NIGMS · JOHNS HOPKINS UNIVERSITY · PI MYONG, SUA · 2016 to 2019
$1.2M
NIGMS NIH HHS R01 GM115631
6 · The paper itself

Abstract

DHX36 is a DEAH-box helicase that resolves parallel G-quadruplex structures formed in DNA and RNA. The recent co-crystal structure of DHX36 bound G4-DNA revealed an intimate contact, but did not address the role of ATP hydrolysis in G4 resolving activity. Here, we demonstrate that unlike on G4-DNA, DHX36 displays ATP-independent unfolding of G4-RNA followed by ATP-dependent refolding, generating a highly asymmetric pattern of activity. Interestingly, DHX36 refolds G4-RNA in several steps, reflecting the discrete steps in forming the G4 structure. We show that the ATP-dependent activity of DHX36 arises from the RNA tail rather than the G4. Mutations that perturb G4 contact result in quick dissociation of the protein from RNA upon ATP hydrolysis, while mutations that interfere with binding the RNA tail induce dysregulated activity. We propose that the ATP-dependent activity of DHX36 may be useful for dynamically resolving various G4-RNA structures in cells.

Indexed as

G-QuadruplexesRNA FoldingAdenosine TriphosphateDEAD-box RNA HelicasesFluorescence Resonance Energy TransferHumansMicroscopy, FluorescenceMutagenesis, Site-DirectedMutationProtein BindingRNASingle Molecule ImagingAdenosine TriphosphateDEAD-box RNA HelicasesDHX36 protein, humanRNA

Identifiers

PMID31015431
PMCPMC6478676
OpenAlexW2942262229

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.