Electron capture-induced dissociation of AK dipeptide dications: Influence of ion velocity, crown-ether complexation and collision gas

Bernigaud, Virgile; Cederquist, Henrik; Haag, Nicole; Holm, Anne I. S.; Huber, Bernd A.; Hvelplund, Preben; Kadhane, Umesh; Larsen, Mikkel Koefoed; Manil, Bruno; Nielsen, Steen Brøndsted; Panja, Subhasis; Ptasińska, Sylwia; Rangama, Jimmy; Reinhed, Peter; Schmidt, Henning T.; Streletskii, Alexey V.; Støchkel, Kristian; Worm, Esben S. and Zettergren, Henning (2008). Electron capture-induced dissociation of AK dipeptide dications: Influence of ion velocity, crown-ether complexation and collision gas. International Journal of Mass Spectrometry, 276(2-3) pp. 77–81.

DOI: https://doi.org/10.1016/j.ijms.2008.05.004

Abstract

The fragmentation of doubly protonated AK dipeptide ions has been investigated after collisional electron transfer. Electron capture leads to three dominant channels, H loss, NH3 loss, and N–C? bond breakage to give either c+ or z+ fragment ions. The relative importance of these channels has been explored as a function of ion velocity, the degree of complexation with crown ether, and collision gas. Our results indicate that H loss and NH3 loss are competing channels whereas the probability of N–C? bond breakage is more or less constant.

Viewing alternatives

Metrics

Item Actions

Export

You can export this page using these formats Digital Object Identifier - DOI