Evidence map›Paper›PMID 21098258›Full record

ArticleProceedings of the National Academy of Sciences of the United States of America2010

Mechanistic insights into cognate substrate discrimination during proofreading in translation.

Tanweer Hussain, Venu Kamarthapu, Shobha P Kruparani, Mandar V Deshmukh, Rajan Sankaranarayanan

Open access · greenAbstract read
In one paragraph

Article in Proceedings of the National Academy of Sciences of the United States of America, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 26 papers.

0numbers the graph read from it
0cells of the map it votes in
26citing papers in PubMed
3.0field-weighted citation impact, top 8% 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

26 citing papers in PubMed, 64 citations in OpenAlex.

  1. Article
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  5. Chiral checkpoints during protein biosynthesis.The Journal of biological chemistry · 2019
    Review
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  9. Conformational and chemical selection by aProceedings of the National Academy of Sciences of the United States of America · 2017
    Article
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  14. Review
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  17. Universal pathway for posttransfer editing reactions: insights from the crystal structure of TtPheRS with puromycin.Proceedings of the National Academy of Sciences of the United States of America · 2015
    Article
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4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

5 authors at 3 institutions in 2 countries.

Tanweer HussainCentre for Cellular and Molecular Biology, Council of Scientific and Industrial Research, Uppal Road, Hyderabad 500 007, India.
Venu Kamarthapu
Shobha P Kruparani
Mandar V Deshmukh
Rajan Sankaranarayanan
Centre for Cellular and Molecular Biology · INMRC Laboratory of Molecular Biology · GBCouncil of Scientific and Industrial Research · IN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Editing/proofreading by aminoacyl-tRNA synthetases is an important quality control step in the accurate translation of the genetic code that removes noncognate amino acids attached to tRNA. Defects in the process of editing result in disease conditions including neurodegeneration. While proofreading, the cognate amino acids larger by a methyl group are generally thought to be sterically rejected by the editing modules as envisaged by the "Double-Sieve Model." Strikingly using solution based direct binding studies, NMR-heteronuclear single quantum coherence (HSQC) and isothermal titration calorimetry experiments, with an editing domain of threonyl-tRNA synthetase, we show that the cognate substrate can gain access and bind to the editing pocket. High-resolution crystal structural analyses reveal that functional positioning of substrates rather than steric exclusion is the key for the mechanism of discrimination. A strategically positioned "catalytic water" molecule is excluded to avoid hydrolysis of the cognate substrate using a "RNA mediated substrate-assisted catalysis mechanism" at the editing site. The mechanistic proof of the critical role of RNA in proofreading activity is a completely unique solution to the problem of cognate-noncognate selection mechanism.

Indexed as

Archaeal ProteinsCatalysisCatalytic DomainCrystallography, X-RayHumansNuclear Magnetic Resonance, BiomolecularProtein BiosynthesisProtein Structure, TertiaryPyrococcus abyssiRNA, ArchaealRNA, TransferSubstrate SpecificityThreonine-tRNA LigaseArchaeal ProteinsRNA, ArchaealRNA, TransferThreonine-tRNA Ligase

Identifiers

PMID21098258
PMCPMC3009766
OpenAlexW2132276503

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.