The fragmentation characteristics of protonated peptides have been investigated using
tandem mass spectrometry (MS/MS) under various fragmentation regimes and detailed
density functional theory (DFT) reaction pathway calculations. The DFT calculations
predict novel salt-bridge stabilized transition structures as well as consecutive reactions
occurring in proton-bound dimers for some of the ions...
Electron-biomolecule interactions are a biologically relevant field of study
because there are several ion fragmentation techniques that have come to the forefront
in mass spectrometric analysis that involve the interaction of charged peptides and
free electrons. By studying the electron energies that cause fragmentation in neutral
amino acids, amino acid...