Modern soft ionization techniques readily produce protonated or multiply protonated
peptides. Collision‐induced dissociation (CID) of these protonated species is often used as …

The gas-phase structures of the protonated pentapeptide Leu-enkephalin and its main
collision-induced dissociation (CID) product ions, b 4 and a 4, are investigated by means of …

By far the most comprehensive review of the synthesis and reactions of mononuclear
oxazoles and derivatives is The Chemistry of Heterocyclic Compounds, Volume 45, edited …

Proton migration in protonated glycylglycylglycine (GGG) has been investigated by using
density functional theory at the B3LYP/6-31++ G (d, p) level of theory. On the protonated …

The fragmentation mechanisms of protonated triglycine and its first-generation dissociation
products have been investigated using a combination of density functional theory …

Molecular radical cations, M•+, of amino acids and oligopeptides are produced by collision-
induced dissociation of mixed complex ions,[CuII (dien) M]• 2+, that contain CuII, an amine …

The tandem mass spectrometry fragmentation reactions of 21 protonated N-acyl amino acid
methyl esters are examined as models for more complicated peptides. Four main types of …

The mobile proton model (Dongré, AR, Jones, JL, Somogyi, A., and Wysocki, VHJ Am.
Chem. Soc. 1996, 118, 8365− 8374) of peptide fragmentation states that the ionizing protons …

The fragmentation of protonated tripeptides under metastable ion conditions and collision-
induced conditions are reported. The majority of protonated tripeptides cleave at the C …

The CID mass spectra of the MH+ ions and the b 5 ions derived therefrom have been
determined for the hexapeptides YAAAAA, AYAAAA, AAYAAA, AAAYAA, and AAAAYA. The …