Evidence map›Paper›PMID 21045552›Full record

ArticleRNA biology

N. meningitidis 1681 is a member of the FinO family of RNA chaperones.

Steven Chaulk, Jun Lu, Kemin Tan, David C Arthur, Ross A Edwards, Laura S Frost, Andrzej Joachimiak, J N Mark Glover

Open access · bronzeAbstract read
In one paragraph

Article in RNA biology. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers.

0numbers the graph read from it
0cells of the map it votes in
20citing papers in PubMed
0.4field-weighted citation impact, top 38% 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

20 citing papers in PubMed, 31 citations in OpenAlex.

  1. Article
  2. RNA recognition by minimal ProQ fromRNA (New York, N.Y.) · 2025
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  16. Review
  17. Structure of theRNA (New York, N.Y.) · 2017
    Article
  18. Article
  19. Review
  20. Article
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

8 authors at 1 institution in 1 country.

Steven ChaulkDepartment of Biochemistry, University of Alberta, Edmonton, Canada.
Jun Lu
Kemin Tan
David C Arthur
Ross A Edwards
Laura S Frost
Andrzej Joachimiak
J N Mark Glover
University of Alberta · CA

Funding

The Midwest Center for Structural GenomicsU54GM074942 · NIGMS · UNIVERSITY OF CHICAGO · PI JOACHIMIAK, ANDRZEJ · 2005 to 2009
$51.0M
Midwest Center for Structural GenomicsU54GM094585 · NIGMS · UNIVERSITY OF CHICAGO · PI MINOR, WLADEK · 2010 to 2014
$33.7M
CIHRHoward Hughes Medical InstituteNIGMS NIH HHS GM074942NIGMS NIH HHS U54 GM074942NIGMS NIH HHS U54 GM094585
6 · The paper itself

Abstract

The conjugative transfer of F-like plasmids between bacteria is regulated by the plasmid-encoded RNA chaperone, FinO, which facilitates sense - antisense RNA interactions to regulate plasmid gene expression. FinO was thought to adopt a unique structure, however many putative homologs have been identified in microbial genomes and are considered members of the FinO_conjugation_repressor superfamily. We were interested in determining whether other members were also able to bind RNA and promote duplex formation, suggesting that this motif does indeed identify a putative RNA chaperone. We determined the crystal structure of the N. meningitidis MC58 protein NMB1681. It revealed striking similarity to FinO, with a conserved fold and a large, positively charged surface that could function in RNA interactions. Using assays developed to study FinO-FinP sRNA interactions, NMB1681, like FinO, bound tightly to FinP RNA stem-loops with short 5' and 3' single-stranded tails but not to ssRNA. It also was able to catalyze strand exchange between an RNA duplex and a complementary single-strand, and facilitated duplexing between complementary RNA hairpins. Finally, NMB1681 was able to rescue a finO deficiency and repress F plasmid conjugation. This study strongly suggests that NMB1681 is a FinO-like RNA chaperone that likely regulates gene expression through RNA-based mechanisms in N. meningitidis.

Indexed as

Amino Acid SequenceBacterial ProteinsConjugation, GeneticF FactorModels, MolecularMolecular ChaperonesMolecular Sequence DataNeisseria meningitidisProtein Structure, TertiaryRecombinant ProteinsRNARNA-Binding ProteinsSequence AlignmentBacterial ProteinsMolecular ChaperonesRecombinant ProteinsRNARNA-Binding Proteins

Identifiers

PMID21045552
PMCPMC3073339
OpenAlexW2013406140

What OpenQuestion holds

Textmetadata
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.