Electron Capture Dissociation, Electron Detachment Dissociation, and Infrared Multiphoton Dissociation of Sucrose Octasulfate
Loading...
Authors
Wolff, Jeremy J.
Laremore, Tatiana N.
Leach, Franklin E.
Linhardt, Robert J.
Amster, I. Jonathan
Issue Date
2009-04-30
Type
Article
Language
ENG
Keywords
Biology , Chemistry and chemical biology , Chemical and biological engineering , Biomedical engineering
Alternative Title
Abstract
The structural analysis of sulfated carbohydrates such as glycosaminoglycans (GAGs) has been a long- standing challenge for the field of mass spectrometry. The dissociation of sulfated carbohydrates by collisionally- activated dissociation (CAD) or infrared multiphoton dissociation (IRMPD), which activate ions via vibrational excitation, typically result in few cleavages and abundant SO(3) loss for highly sulfated GAGs such as heparin and heparan sulfate, hampering efforts to determine sites of modification. The recent application of electron activation techniques, specifically electron capture dissociation (ECD) and electron detachment dissociation (EDD), provides a marked improvement for the mass spectrometry characterization of GAGs. In this work, we compare ECD, EDD and IRMPD for the dissociation of the highly sulfated carbohydrate sucrose octasulfate (SOS). Both positive and negative multiply-charged ions are investigated. ECD, EDD and IRMPD of SOS produce abundant and reproducible fragmentation. The product ions produced by ECD are quite different than those produced by IRMPD of SOS positive ions, suggesting different dissociation mechanisms as a result of electronic versus vibrational excitation. The product ions produced by EDD and IRMPD of SOS negative ions also differ from each other. Evidence for SO(3) rearrangement exists in the negative ion IRMPD data, complicating the assignment of product ions.
Description
European Journal of Mass Spectrometry, 15, 275–281
Note : if this item contains full text it may be a preprint, author manuscript, or a Gold OA copy that permits redistribution with a license such as CC BY. The final version is available through the publisher’s platform.
Note : if this item contains full text it may be a preprint, author manuscript, or a Gold OA copy that permits redistribution with a license such as CC BY. The final version is available through the publisher’s platform.
Full Citation
Electron Capture Dissociation, Electron Detachment Dissociation, and Infrared Multiphoton Dissociation of Sucrose Octasulfate, J. J.Wolff, T. N.Laremore, F. E.Leach, R. J. Linhardt, I. Amster, European Journal of Mass Spectrometry, 15, 275–281, 2009.
Publisher
Sage
Terms of Use
Journal
Volume
Issue
PubMed ID
DOI
ISSN
14690667