Infrared Multiphoton Dissociation and Electron Capture Dissociation of High-Mannose Type Glycopeptides

2006 ◽  
Vol 5 (3) ◽  
pp. 493-501 ◽  
Author(s):  
Julie T. Adamson ◽  
Kristina Håkansson
Keyword(s):  
Electron Capture ◽  
Electron Capture Dissociation ◽  
Infrared Multiphoton Dissociation ◽  
Multiphoton Dissociation ◽  
High Mannose

Electron Capture Dissociation and Infrared Multiphoton Dissociation MS/MS of an N-Glycosylated Tryptic Peptide To Yield Complementary Sequence Information

2001 ◽  
Vol 73 (18) ◽  
pp. 4530-4536 ◽  
Author(s):  
Kristina Håkansson ◽  
Helen J. Cooper ◽  
Mark R. Emmett ◽  
Catherine E. Costello ◽  
Alan G. Marshall ◽  
...  
Keyword(s):  
Electron Capture ◽  
Electron Capture Dissociation ◽  
Tryptic Peptide ◽  
Infrared Multiphoton Dissociation ◽  
Sequence Information ◽  
Complementary Sequence ◽  
Multiphoton Dissociation

scholarly journals Electron Capture Dissociation, Electron Detachment Dissociation and Infrared Multiphoton Dissociation of Sucrose Octasulfate

2009 ◽  
Vol 15 (2) ◽  
pp. 275-281 ◽  
Author(s):  
Jeremy J. Wolff ◽  
Tatiana N. Laremore ◽  
Franklin E. Leach ◽  
Robert J. Linhardt ◽  
I. Jonathan Amster
Keyword(s):  
Mass Spectrometry ◽  
Electron Capture ◽  
Electron Capture Dissociation ◽  
Vibrational Excitation ◽  
Infrared Multiphoton Dissociation ◽  
Electron Detachment Dissociation ◽  
Electron Detachment ◽  
Sucrose Octasulfate ◽  
Product Ions ◽  
Multiphoton Dissociation

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 SO3 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 SO3 rearrangement exists in the negative ion IRMPD data, complicating the assignment of product ions.

scholarly journals Electron capture dissociation and infrared multiphoton dissociation of oligodeoxynucleotide dications

2003 ◽  
Vol 14 (1) ◽  
pp. 23-41 ◽  
Author(s):  
Kristina Håkansson ◽  
Robert R. Hudgins ◽  
Alan G. Marshall ◽  
Richard A. J. O’Hair
Keyword(s):  
Electron Capture ◽  
Electron Capture Dissociation ◽  
Infrared Multiphoton Dissociation ◽  
Multiphoton Dissociation

Combined Electron Capture and Infrared Multiphoton Dissociation for Multistage MS/MS in a Fourier Transform Ion Cyclotron Resonance Mass Spectrometer

2003 ◽  
Vol 75 (13) ◽  
pp. 3256-3262 ◽  
Author(s):  
Kristina Håkansson ◽  
Michael J. Chalmers ◽  
John P. Quinn ◽  
Melinda A. McFarland ◽  
Christopher L. Hendrickson ◽  
...  
Keyword(s):  
Fourier Transform ◽  
Electron Capture ◽  
Mass Spectrometer ◽  
Cyclotron Resonance ◽  
Infrared Multiphoton Dissociation ◽  
Ion Cyclotron Resonance ◽  
Ion Cyclotron ◽  
Multiphoton Dissociation

Chloroform Infrared Multiphoton Dissociation in the Presence of O2 and NO2¶

2005 ◽  
Vol 81 (4) ◽  
pp. 789 ◽  
Author(s):  
V. Mariana Freytes ◽  
Jorge Codnia ◽  
M. Laura Azcárate
Keyword(s):  
Infrared Multiphoton Dissociation ◽  
Multiphoton Dissociation
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