Article (Scientific journals)
Energetics and Structural Characterization of Isomers Using Ion Mobility and Gas-phase H/D Exchange: Learning from Lasso Peptides
Hanozin, Emeline; Morsa, Denis; De Pauw, Edwin
2015In Proteomics, early view, p. 1-12
Peer Reviewed verified by ORBi
 

Files


Full Text
pmic9500.pdf
Author preprint (1.05 MB)
Request a copy
Full Text Parts
pmic9500-sup-0001-SuppMat.pdf
Author preprint (996.01 kB)
Request a copy

This is the peer reviewed version of the following article: Energetics and Structural Characterization of Isomers Using Ion Mobility and Gas-phase H/D Exchange: Learning from Lasso Peptides, which has been published in final form at [10.1002/pmic.201400534]. This article may be used for non-commercial purposes in accordance With Wiley Terms and Conditions for self-archiving.


All documents in ORBi are protected by a user license.

Send to



Details



Keywords :
Ion mobility; peptides; folding; mass spectrometry; H/D exchange
Abstract :
[en] State-of-the-art characterization of proteins using mass spectrometry namely relies on fragmentation methods which allows exploring featured dissociative reaction pathways. These pathways are often initiated by a series of potentially informative mass-constant conformational changes that are nonetheless frequently overlooked by lack of adequate investigation techniques. In the present study, we propose a methodology to readily address both structural and energetic aspects of stereoisomerization reactions using ion mobility coupled with mass spectrometry. To this end, a commercial spectrometer was used as a reactor comprising an energy resolved collisional activation step intended at promoting controlled conformational changes and a structural assignment step dedicated to the identification of the generated isomers. This identification relies on ion mobility and other on-line coupled techniques, namely an originally designed gas-phase H/D exchange experiment. We here apply this methodology to characterize the isomerization kinetics of capistruin, a 19-residue long lasso-folded peptide. We expect this approach to bring insights into the physical origin of global dissociation thresholds monitored in tandem mass spectrometry experiments and to set a promising basis for quantitative investigations of the stability of different molecular folds.
Research center :
Giga-Systems Biology and Chemical Biology - ULiège
CART - Centre Interfacultaire d'Analyse des Résidus en Traces - ULiège
Disciplines :
Chemistry
Biochemistry, biophysics & molecular biology
Author, co-author :
Hanozin, Emeline ;  Université de Liège - ULiège > Département de chimie (sciences) > Laboratoire de spectrométrie de masse (L.S.M.), GIGA-R
Morsa, Denis  ;  Université de Liège - ULiège > Center for Analytical Research and Technology (CART)
De Pauw, Edwin  ;  Université de Liège - ULiège > Département de chimie (sciences) > Laboratoire de spectrométrie de masse (L.S.M.), GIGA-R
Language :
English
Title :
Energetics and Structural Characterization of Isomers Using Ion Mobility and Gas-phase H/D Exchange: Learning from Lasso Peptides
Publication date :
27 June 2015
Journal title :
Proteomics
ISSN :
1615-9853
eISSN :
1615-9861
Publisher :
Wiley-VCH Verlag Gmbh, Weinheim, Germany
Volume :
early view
Pages :
1-12
Peer reviewed :
Peer Reviewed verified by ORBi
European Projects :
FP7 - 278346 - VENOMICS - High-throughput peptidomics and transcriptomics of animal venoms for discovery of novel therapeutic peptides and innovative drug development
Funders :
F.R.S.-FNRS - Fonds de la Recherche Scientifique [BE]
CE - Commission Européenne [BE]
Available on ORBi :
since 27 March 2015

Statistics


Number of views
107 (25 by ULiège)
Number of downloads
13 (13 by ULiège)

Scopus citations®
 
7
Scopus citations®
without self-citations
6
OpenCitations
 
5

Bibliography


Similar publications



Contact ORBi