Negative ion fragmentations of deprotonated peptides: backbone cleavages directed through both Asp and Glu

2001 ◽  
Vol 15 (20) ◽  
pp. 1965-1973 ◽  
Author(s):  
Craig S. Brinkworth ◽  
Suresh Dua ◽  
Andrew M. McAnoy ◽  
John H. Bowie
Keyword(s):  
Negative Ion ◽  
Deprotonated Peptides

Negative ion fragmentations of deprotonated peptides. The unusual case ofisoAsp: a joint experimental and theoretical study. Comparison with positive ion cleavages

2009 ◽  
Vol 23 (13) ◽  
pp. 1993-2002 ◽  
Author(s):  
Hayley J. Andreazza ◽  
Tianfang Wang ◽  
Christopher J. Bagley ◽  
Peter Hoffmann ◽  
John H. Bowie
Keyword(s):  
Unusual Case ◽  
Theoretical Study ◽  
Negative Ion ◽  
Deprotonated Peptides ◽  
Positive Ion

Characteristic negative ion fragmentations of deprotonated peptides containing post-translational modifications: mono-phosphorylated Ser, Thr and Tyr. A joint experimental and theoretical study

2008 ◽  
Vol 22 (20) ◽  
pp. 3305-3312 ◽  
Author(s):  
Hayley J. Andreazza ◽  
Mark Fitzgerald ◽  
Daniel Bilusich ◽  
Ralf Hoffmann ◽  
Peter Hoffmann ◽  
...  
Keyword(s):  
Theoretical Study ◽  
Negative Ion ◽  
Post Translational Modifications ◽  
Deprotonated Peptides

Numerical Study of the H0 Atomic Density and the Balmer Line Intensity Profiles in a Hydrogen Negative Ion Source with the Effect of Non-Equilibrium Electron Energy Distribution Function

2014 ◽  
Vol 9 (0) ◽  
pp. 1401011-1401011 ◽  
Author(s):  
Takanori SHIBATA ◽  
Mieko KASHIWAGI ◽  
Akiyoshi HATAYAMA ◽  
Keiji SAWADA ◽  
Takashi INOUE ◽  
...  
Keyword(s):  
Distribution Function ◽  
Energy Distribution ◽  
Electron Energy ◽  
Line Intensity ◽  
Electron Energy Distribution Function ◽  
Numerical Study ◽  
Ion Source ◽  
Energy Distribution Function ◽  
Negative Ion ◽  
Balmer Line

Confounding contaminants in mass spectrometric reaction monitoring

2018 ◽  
Author(s):  
Gilian T. Thomas ◽  
Landon MacGillivray ◽  
Natalie L. Dean ◽  
Rhonda L. Stoddard ◽  
Lars Yunker ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Mass Spectrometric ◽  
Negative Ion ◽  
Reaction Monitoring ◽  
Schlenk Flask ◽  
Dynamic Analyses ◽  
Rubber Septa ◽  
Negative Ion Mode ◽  
Mode A

<p>Reactions carried out in the presence of rubber septa run the risk of additives being leached out by the solvent. Normally, such species are present at low enough levels that they do not interfere with the reaction significantly. However, when studying reactions using sensitive methods such as mass spectrometry, the appearance of even trace amounts of material can confuse dynamic analyses of reactions. A wide variety of additives are present in rubber along with the polymer: antioxidants, dyes, detergent, and vulcanization agents, and these are all especially problematic in negative ion mode. A redesigned Schlenk flask for pressurized sample infusion (PSI) is presented as a means of practically eliminating the presence of contaminants during reaction analyses.</p>

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