Evidence map›Paper›PMID 19787060›Full record

ArticlePloS one2009

Betaalpha-hairpin clamps brace betaalphabeta modules and can make substantive contributions to the stability of TIM barrel proteins.

Xiaoyan Yang, Sagar V Kathuria, Ramakrishna Vadrevu, C Robert Matthews

Abstract read
In one paragraph

Article in PloS one, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers.

0numbers the graph read from it
0cells of the map it votes in
9citing papers in PubMed
–field-weighted citation impact
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

9 citing papers in PubMed.

  1. Article
  2. Article
  3. Article
  4. Frustration and folding of a TIM barrel protein.Proceedings of the National Academy of Sciences of the United States of America · 2019
    Article
  5. Article
  6. Article
  7. Article
  8. Review
  9. 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

4 authors.

Xiaoyan YangDepartment of Biochemistry and Molecular Pharmacology, University of Massachusetts Medical School, Worcester, Massachusetts, USA.
Sagar V Kathuria
Ramakrishna Vadrevu
C Robert Matthews

Funding

MUTAGENESIS AS A PROBE OF THE FOLDING OF TRP SYNTHASER01GM023303 · NIGMS · UNIV OF MASSACHUSETTS MED SCH WORCESTER · PI BILSEL, OSMAN, MATTHEWS, C ROBERT · 1985 to 2017
$5.4M
NIGMS NIH HHS GM 23303NIGMS NIH HHS R01 GM023303
6 · The paper itself

Abstract

Non-local hydrogen bonding interactions between main chain amide hydrogen atoms and polar side chain acceptors that bracket consecutive betaalpha or alphabeta elements of secondary structure in alphaTS from E. coli, a TIM barrel protein, have previously been found to contribute 4-6 kcal mol(-1) to the stability of the native conformation. Experimental analysis of similar betaalpha-hairpin clamps in a homologous pair of TIM barrel proteins of low sequence identity, IGPS from S. solfataricus and E. coli, reveals that this dramatic enhancement of stability is not unique to alphaTS. A survey of 71 TIM barrel proteins demonstrates a 4-fold symmetry for the placement of betaalpha-hairpin clamps, bracing the fundamental betaalphabeta building block and defining its register in the (betaalpha)(8) motif. The preferred sequences and locations of betaalpha-hairpin clamps will enhance structure prediction algorithms and provide a strategy for engineering stability in TIM barrel proteins.

Indexed as

Protein Structure, SecondaryProtein Structure, TertiaryAlgorithmsBacterial ProteinsCircular DichroismEscherichia coliHydrogen BondingHydrogen-Ion ConcentrationKineticsMolecular ConformationProtein ConformationProtein EngineeringProtein FoldingSulfolobusThermodynamicsBacterial Proteins

Identifiers

PMID19787060
PMCPMC2747017

What OpenQuestion holds

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Registered trials

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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.