Evidence map›Paper›PMID 19425552›Full record

ArticleJournal of the American Chemical Society2009

Probing the folding transition state structure of the villin headpiece subdomain via side chain and backbone mutagenesis.

Michelle R Bunagan, Jianmin Gao, Jeffery W Kelly, Feng Gai

Abstract read
In one paragraph

Article in Journal of the American Chemical Society, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 37 papers.

0numbers the graph read from it
0cells of the map it votes in
37citing 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

37 citing papers in PubMed.

  1. Article
  2. Article
  3. Modern Kinetics and Mechanism of Protein Folding: A Retrospective.The journal of physical chemistry. B · 2021
    Article
  4. Article
  5. Article
  6. Article
  7. Article
  8. Heterogeneity in the Folding of Villin Headpiece Subdomain HP36.The journal of physical chemistry. B · 2018
    Article
  9. Article
  10. Microscopic nucleation and propagation rates of an alanine-based α-helix.Physical chemistry chemical physics : PCCP · 2017
    Article
  11. Review
  12. Article
  13. Sequence, structure, and cooperativity in folding of elementary protein structural motifs.Proceedings of the National Academy of Sciences of the United States of America · 2015
    Article
  14. Site-specific infrared probes of proteins.Annual review of physical chemistry · 2015
    Review
  15. Article
  16. Forces stabilizing proteins.FEBS letters · 2014
    Review
  17. Ester carbonyl vibration as a sensitive probe of protein local electric field.Angewandte Chemie (International ed. in English) · 2014
    Article
  18. Contribution of hydrogen bonds to protein stability.Protein science : a publication of the Protein Society · 2014
    Article
  19. Article
  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

4 authors.

Michelle R BunaganDepartment of Chemistry, University of Pennsylvania, 231 South 34th Street, Philadelphia, Pennsylvania 19104, USA.
Jianmin Gao
Jeffery W Kelly
Feng Gai

Funding

ZN-INDUCED PEPTIDE FOLDINGP41RR001348 · NCRR · UNIVERSITY OF PENNSYLVANIA · PI DEGRADO, WILLIAM · 1985 to 2011
$8.7M
UNDERSTANDING B-SHEET STRUCTURE IN AQUEOUS SOLUTIONR01GM051105 · NIGMS · TEXAS A&M UNIVERSITY HEALTH SCIENCE CTR · PI KELLY, JEFFERY W · 1994 to 2019
$5.8M
Spectroscopic Study of Protein Folding DynamicsR01GM065978 · NIGMS · UNIVERSITY OF PENNSYLVANIA · PI GAI, FENG · 2002 to 2014
$3.9M
NCRR NIH HHS P41 RR001348NCRR NIH HHS RR-01348NIGMS NIH HHS GM-051105NIGMS NIH HHS GM-065978NIGMS NIH HHS R01 GM051105NIGMS NIH HHS R01 GM065978
6 · The paper itself

Abstract

Backbone-backbone hydrogen bonds are a common feature of native protein structures, yet their thermodynamic and kinetic influence on folding has long been debated. This is reflected by the disparity between current protein folding models, which place hydrogen bond formation at different stages along the folding trajectory. For example, previous studies have suggested that the denatured state of the villin headpiece subdomain contains a residual helical structure that may provide a bias toward the folded state by confining the conformational search associated with its folding. Although helical hydrogen bonds clearly stabilize the folded state, here we show, using an amide-to-ester mutation strategy, that the formation of backbone hydrogen bonds within helices is not rate-limiting in the folding of the subdomain, thereby suggesting that such hydrogen bonds are unlikely to be formed en route from the denatured to the transition state. On the other hand, elimination of hydrogen bonds within the turn region elicits a slower folding rate, consistent with the hypothesis that these residues are involved in the formation of a folding nucleus. While illustrating a potentially conserved aspect of helix-turn-helix folding, our results further underscore the inherent importance of turns in protein supersecondary structure formation.

Indexed as

MutagenesisProtein FoldingHydrogen BondingKineticsMethodsMicrofilament ProteinsMolecular Probe TechniquesPhase TransitionProtein ConformationProtein Structure, SecondaryMicrofilament Proteinsvillin

Identifiers

PMID19425552
PMCPMC2754817

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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.