Evidence map›Paper›PMID 26847383›Full record

ArticleAngewandte Chemie (International ed. in English)2016

Charge-Induced Unzipping of Isolated Proteins to a Defined Secondary Structure.

Ana Isabel González Flórez, Eike Mucha, Doo-Sik Ahn, Sandy Gewinner, Wieland Schöllkopf, Kevin Pagel, Gert von Helden

Abstract read
In one paragraph

Article in Angewandte Chemie (International ed. in English), 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 25 papers.

0numbers the graph read from it
0cells of the map it votes in
25citing 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

25 citing papers in PubMed.

  1. Article
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  5. Studying the Intrinsic Reactivity of Chromanes by Gas-Phase Infrared Spectroscopy.Journal of the American Society for Mass Spectrometry · 2024
    Article
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  9. Article
  10. Article
  11. Unveiling Glycerolipid Fragmentation by Cryogenic Infrared Spectroscopy.Journal of the American Chemical Society · 2021
    Article
  12. Article
  13. Article
  14. Review
  15. The Impact of Leaving Group Anomericity on the Structure of Glycosyl Cations of Protected Galactosides.Chemphyschem : a European journal of chemical physics and physical chemistry · 2020
    Article
  16. Article
  17. Article
  18. Article
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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

7 authors.

Ana Isabel González FlórezFritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4-6, 14195, Berlin, Germany.
Eike MuchaFritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4-6, 14195, Berlin, Germany.
Doo-Sik AhnFritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4-6, 14195, Berlin, Germany.
Sandy GewinnerFritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4-6, 14195, Berlin, Germany.
Wieland SchöllkopfFritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4-6, 14195, Berlin, Germany.
Kevin PagelFritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4-6, 14195, Berlin, Germany.
Gert von HeldenFritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4-6, 14195, Berlin, Germany. helden@fhi-berlin.mpg.de.ORCID http://orcid.org/0000-0001-7611-8740

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Here we present a combined experimental and theoretical study on the secondary structure of isolated proteins as a function of charge state. In infrared spectra of the proteins ubiquitin and cytochrome c, amide I (C=O stretch) and amide II (N-H bend) bands can be found at positions that are typical for condensed-phase proteins. For high charge states a new band appears, substantially red-shifted from the amide II band observed at lower charge states. The observations are interpreted in terms of Coulomb-driven transitions in secondary structures from mostly helical to extended C5 -type hydrogen-bonded structures. Support for this interpretation comes from simple energy considerations as well as from quantum chemical calculations on model peptides. This transition in secondary structure is most likely universal for isolated proteins that occur in mass spectrometric experiments.

Indexed as

Cytochromes cHydrogen BondingProtein Structure, SecondarySpectrophotometry, InfraredUbiquitinCytochromes cUbiquitingas-phase reactionsIR spectroscopylow-temperature physicsmass spectrometryprotein structures

Identifiers

PMID26847383
PMCPMC4770441

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.