Evidence map›Paper›PMID 12455977›Full record

ArticleEukaryotic cell2002

Role of uridylate-specific exoribonuclease activity in Trypanosoma brucei RNA editing.

Robert P Igo, David S Weston, Nancy Lewis Ernst, Aswini K Panigrahi, Reza Salavati, Kenneth Stuart

Open access · diamondAbstract read
In one paragraph

Article in Eukaryotic cell, 2002. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 49 papers.

0numbers the graph read from it
0cells of the map it votes in
49citing papers in PubMed
3.8field-weighted citation impact, top 6% 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

49 citing papers in PubMed, 68 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

6 authors at 2 institutions in 1 country.

Robert P IgoSeattle Biomedical Research Institute, Seattle, Washington 98109, USA.
David S Weston
Nancy Lewis Ernst
Aswini K Panigrahi
Reza Salavati
Kenneth Stuart
Center for Infectious Disease Research · USUniversity of Washington · US

Funding

MITOCHONDRIAL DNA OF NORMAL AND MUTANT TRYPANOSOMESR01AI014102 · NIAID · SEATTLE CHILDREN'S HOSPITAL · PI KENNETH D STUART · 1985 to 2026
$20.9M
RNA Editing ComplexR01GM042188 · NIGMS · SEATTLE BIOMEDICAL RESEARCH INSTITUTE · PI STUART, KENNETH D · 1989 to 2006
$3.4M
MITOCHONDRIAL DNA OF NORMAL AND MUTANT TRYPANOSOMESR37AI014102 · NIAID · SEATTLE BIOMEDICAL RESEARCH INSTITUTE · PI STUART, KENNETH D · 1992 to 2001
$971k
DETERMINANTS OF SPECIFICITY IN KINETOPLASTID RNA EDITINGF32AI010312 · NIAID · SEATTLE BIOMEDICAL RESEARCH INSTITUTE · PI IGO, ROBERT P · 1999 to 2001
$64k
NIAID NIH HHS AI10312NIAID NIH HHS AI14102NIAID NIH HHS F32 AI010312NIAID NIH HHS R01 AI014102NIAID NIH HHS R37 AI014102NIGMS NIH HHS GM42188NIGMS NIH HHS R01 GM042188
6 · The paper itself

Abstract

Editing of mitochondrial mRNAs in kinetoplastid protozoa occurs by a series of enzymatic steps that insert and delete uridylates (U's) as specified by guide RNAs (gRNAs). The characteristics of the 3' exonuclease activity that removes the U's following cleavage during deletion editing were determined by using an in vitro precleaved deletion assay that is based on ATPase subunit 6 pre-mRNA and gA6[14] gRNA. The exonuclease in partially purified editing complexes is specific for U's. The specificity occurs in the absence of gRNA, but its activity is enhanced by the presence of gRNA. The 3' pre-mRNA fragment enhances the specificity, but not the efficiency, of U removal. The activity is sensitive to the 5' phosphate of the 3' fragment, which is not required for U removal. The ability of the 3' U's to base pair with purines in the gRNA protects them from removal, suggesting that the U-specific 3' exonuclease (exoUase) is specific for U's which are not base paired. ExoUase is stereospecific and cannot remove (Rp)alpha-thio-U. The specificity of the exoUase activity thus contributes to the precision of RNA editing.

Indexed as

RNA EditingAnimalsBase SequenceDNA PrimersExoribonucleasesKineticsMolecular Sequence DataPolymerase Chain ReactionProtozoan ProteinsRNA, ProtozoanSubstrate SpecificityUridine MonophosphateDNA PrimersExoribonucleasesProtozoan ProteinsRNA, ProtozoanUridine Monophosphateuridylate-specific 3'-exoribonuclease

Identifiers

PMID12455977
PMCPMC118049
OpenAlexW2137195660

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.