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.

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• Item ORO ID
• 15138
• Item Type
• Journal Item
• ISSN
• 1387-3806
• Project Funding Details

• Funded Project Name	Project ID	Funding Body
  Not Set	Not Set	European Project ITS LEIF (RII3/026015)
  Not Set	Not Set	Danish Natural Science Research Council [grant numbers 21-04-0514 and 272-06-0427]
  Not Set	Not Set	Carlsbergfondet [grant number 2006-01-0229]
  Not Set	Not Set	Lundbeckfonden

• Extra Information
• Some of the characters in the abstract are superscript and subscript but have not reproduced correctly. To view an accurate version of the abstract please see the publisher's version by clicking on the DOI URL.
• Keywords
• electron capture-induced dissociation; dipeptide; collision gas; electronically excited state
• Academic Unit or School
• Faculty of Science, Technology, Engineering and Mathematics (STEM) > Physical Sciences
  Faculty of Science, Technology, Engineering and Mathematics (STEM)
• Depositing User
• Astrid Peterkin