Formation of Carbon Dioxide Attached Fragment Ions in the Fragmentation of Deprotonated Tolfenpyrad and Tebufenpyrad
Sign Up to like & getrecommendations! Published in 2019 at "Journal of The American Society for Mass Spectrometry"
DOI: 10.1007/s13361-019-02273-9
Abstract: The in-source collision-induced dissociation (CID) and MS/MS mass spectra of deprotonated tolfenpyrad and tebufenpyrad both showed an unusual fragment ion at m/z 187, but its fragmentation pattern and structure could not be explained by logical… read more here.
Keywords: carbon dioxide; ion; mass; fragment ion ... See more keywords
Calibration of parent and fragment ion detection rates in Rosettas ROSINA/DFMS mass spectrometer
Sign Up to like & getrecommendations! Published in 2019 at "International Journal of Mass Spectrometry"
DOI: 10.1016/j.ijms.2019.116233
Abstract: The Double Focusing Mass Spectrometer DFMS embarked on the European Space Agency’s Rosetta mission as part of the ROSINA instrument suite. It boasts a high mass resolution and a high sensitivity, which have guaranteed spectacular… read more here.
Keywords: parent fragment; mass spectrometer; mass; ion ... See more keywords
Site-Specific Quantification of Protein Ubiquitination on MS2 Fragment Ion Level via Isobaric Peptide Labeling.
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DOI: 10.1021/acs.analchem.7b02654
Abstract: Proteome-wide quantitative analysis of protein ubiquitination is important to gain insight into its various cellular functions. However, it is still challenging to monitor how ubiquitination at each individual lysine residue is independently regulated, especially the… read more here.
Keywords: isobaric peptide; ubiquitination; level; site ... See more keywords
Implementation of Fragment Ion Protection (FIP) during Ultraviolet Photodissociation (UVPD) Mass Spectrometry.
Sign Up to like & getrecommendations! Published in 2018 at "Analytical chemistry"
DOI: 10.1021/acs.analchem.8b01723
Abstract: Ultraviolet photodissociation (UVPD) is a nonselective activation method in which both precursor and fragment ions may absorb photons and dissociate. Photoactivation of fragment ions may result in secondary or multiple generations of dissociation, which decreases… read more here.
Keywords: fragment ions; photodissociation uvpd; ultraviolet photodissociation; ion ... See more keywords
Conditional Fragment Ion Probabilities Improve Database Searching for Nonmonoisotopic Precursors
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DOI: 10.1021/acs.jproteome.2c00247
Abstract: Stochastic, intensity-based precursor isolation can result in isotopically enriched fragment ions. This problem is exacerbated for large peptides and stable isotope labeling experiments using deuterium or 15N. For stable isotope labeling experiments, incomplete and ubiquitous… read more here.
Keywords: database searching; fragment ion; ion probabilities; ion ... See more keywords
Improving the Center Section Sequence Coverage of Large Proteins Using Stepped-Fragment Ion Protection Ultraviolet Photodissociation.
Sign Up to like & getrecommendations! Published in 2022 at "Journal of the American Society for Mass Spectrometry"
DOI: 10.1021/jasms.1c00296
Abstract: Ultraviolet photodissociation (UVPD) mass spectrometry has gained attention in recent years for its ability to provide high sequence coverage of intact proteins. However, secondary dissociation of fragment ions, in which fragment ions subjected to multiple… read more here.
Keywords: sequence coverage; fragment ion; fragment ions; sequence ... See more keywords