Evidence map›Paper›PMID 20000372›Full record

ArticleThe journal of physical chemistry. B2010

Factors that influence helical preferences for singly charged gas-phase peptide ions: the effects of multiple potential charge-carrying sites.

Janel R McLean, John A McLean, Zhaoxiang Wu, Christopher Becker, Lisa M Pérez, C Nick Pace, J Martin Scholtz, David H Russell

Abstract read
In one paragraph

Article in The journal of physical chemistry. B, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.

0numbers the graph read from it
0cells of the map it votes in
7citing 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

7 citing papers in PubMed.

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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

8 authors.

Janel R McLeanDepartment of Chemistry, Laboratory for Biological Mass Spectrometry, Texas A & M University, College Station, Texas 77843, USA.
John A McLean
Zhaoxiang Wu
Christopher Becker
Lisa M Pérez
C Nick Pace
J Martin Scholtz
David H Russell

Funding

Ion Mobility - Mass Spectrometry for ProteomicsR01RR019587 · NCRR · TEXAS A&M UNIVERSITY SYSTEM · PI RUSSELL, DAVID H · 2004 to 2006
$650k
Graduate Training in Molecular BiophysicsT32GM065088 · NIGMS · TEXAS A&M UNIVERSITY HEALTH SCIENCE CTR · PI REINHART, GREGORY DUNCAN · 2003 to 2007
$572k
NCRR NIH HHS 1 R01 RR019587-01NCRR NIH HHS R01 RR019587NIGMS NIH HHS 1 T32 GM065088-01A1NIGMS NIH HHS T32 GM065088
6 · The paper itself

Abstract

Ion mobility-mass spectrometry is used to investigate the structure(s) of a series of model peptide [M + H](+) ions to better understand how intrinsic properties affect structure in low dielectric environments. The influence of peptide length, amino acid sequence, and composition on gas-phase structure is examined for a series of model peptides that have been previously studied in solution. Collision cross sections for the [M + H](+) ions of Ac-(AAKAA)(n)Y-NH(2) (n = 3-6) and Ac-Y(AEAAKA)(n)F-NH(2) (n = 2-5) are reported and correlated with candidate structures generated using molecular modeling techniques. The [M + H](+) ions of the AAKAA peptide series each exhibit a single, dominant ion mobility arrival time distribution (ATD) which correlates to partial helical structures, whereas the [M + H](+) ions of the AEAAKA ion series are composed of ATDs which correlate to charge-solvated globules (i.e., the charge is coordinated or solvated by polar peptide functional groups). These data raise numerous questions concerning intrinsic properties (amino acid sequence and composition as well as charge location) that dictate gas-phase peptide ion structure, which may reflect trends for peptide ion structure in low dielectric environments, such as transmembrane segments.

Indexed as

Amino Acid SequenceGasesIonsModels, MolecularPeptidesProtein Structure, SecondarySpectrometry, Mass, Electrospray IonizationGasesIonsPeptides

Identifiers

PMID20000372
PMCPMC2818683

What OpenQuestion holds

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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.