Evidence map›Paper›PMID 20802481›Full record

ArticleNature2010

Identification of a quality-control mechanism for mRNA 5'-end capping.

Xinfu Jiao, Song Xiang, Chanseok Oh, Charles E Martin, Liang Tong, Megerditch Kiledjian

Abstract read
In one paragraph

Article in Nature, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 113 papers.

0numbers the graph read from it
0cells of the map it votes in
113citing papers in PubMed
6.2field-weighted citation impact, top 3% 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

113 citing papers in PubMed, 172 citations in OpenAlex.

  1. Arabidopsis DXO1- and RNMT1-Mediated mPlant, cell & environment · 2026
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  18. Cancer cells hijack RNA processing to rewrite the message.Biochemical Society transactions · 2022
    Article
  19. Article
  20. Article

53 more citing papers are in PubMed but not listed here.

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.

Xinfu JiaoDepartment of Cell Biology and Neuroscience, Rutgers University, Piscataway, New Jersey 08854, USA.
Song Xiang
Chanseok Oh
Charles E Martin
Liang Tong
Megerditch Kiledjian
Rutgers, The State University of New Jersey · USColumbia University · US

Funding

Regulation of Mammalian mRNA DecayR01GM067005 · NIGMS · RUTGERS THE ST UNIV OF NJ NEW BRUNSWICK · PI KILEDJIAN, MEGERDITCH · 2004 to 2022
$5.5M
Structural biology of pre-mRNA 3'-end processingR01GM077175 · NIGMS · COLUMBIA UNIV NEW YORK MORNINGSIDE · PI TONG, LIANG · 2007 to 2015
$2.8M
Structure and function of 5' to 3' exoribonucleasesR01GM090059 · NIGMS · COLUMBIA UNIV NEW YORK MORNINGSIDE · PI TONG, LIANG · 2011 to 2015
$1.9M
NIGMS NIH HHS GM077175NIGMS NIH HHS GM67005NIGMS NIH HHS R01 GM067005NIGMS NIH HHS R01 GM077175NIGMS NIH HHS R01 GM090059
6 · The paper itself

Abstract

The 7-methylguanosine cap structure at the 5' end of eukaryotic messenger RNAs is a critical determinant of their stability and translational efficiency. It is generally believed that 5'-end capping is a constitutive process that occurs during mRNA maturation and lacks the need for a quality-control mechanism to ensure its fidelity. We recently reported that the yeast Rai1 protein has pyrophosphohydrolase activity towards mRNAs lacking a 5'-end cap. Here we show that, in vitro as well as in yeast cells, Rai1 possesses a novel decapping endonuclease activity that can also remove the entire cap structure dinucleotide from an mRNA. This activity is targeted preferentially towards mRNAs with unmethylated caps in contrast to the canonical decapping enzyme, Dcp2, which targets mRNAs with a methylated cap. Capped but unmethylated mRNAs generated in yeast cells with a defect in the methyltransferase gene are more stable in a rai1-gene-disrupted background. Moreover, rai1Δ yeast cells with wild-type capping enzymes show significant accumulation of mRNAs with 5'-end capping defects under nutritional stress conditions of glucose starvation or amino acid starvation. These findings provide evidence that 5'-end capping is not a constitutive process that necessarily always proceeds to completion and demonstrates that Rai1 has an essential role in clearing mRNAs with aberrant 5'-end caps. We propose that Rai1 is involved in an as yet uncharacterized quality control process that ensures mRNA 5'-end integrity by an aberrant-cap-mediated mRNA decay mechanism.

Indexed as

5' Untranslated RegionsAmino AcidsEndoribonucleasesExoribonucleasesGlucoseGuanosineHydrolysisMethylationNuclear ProteinsRNA-Binding ProteinsRNA CapsRNA, FungalRNA StabilitySaccharomyces cerevisiaeSaccharomyces cerevisiae ProteinsStress, Physiological5' Untranslated Regions7-methylguanosineAmino AcidsDCP2 protein, S cerevisiaeEndoribonucleasesExoribonucleasesGlucoseGuanosineNuclear ProteinsRai1 protein, S cerevisiaeRAT1 protein, S cerevisiaeRNA-Binding ProteinsRNA CapsRNA, FungalSaccharomyces cerevisiae Proteins

Identifiers

PMID20802481
PMCPMC2948066
OpenAlexW2080902551

What OpenQuestion holds

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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.