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Wiley, Angewandte Chemie International Edition, 42(46), p. 8057-8059, 2007

DOI: 10.1002/anie.200703327

Wiley, Angewandte Chemie, 42(119), p. 8203-8205, 2007

DOI: 10.1002/ange.200703327

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Combined Experimental and Theoretical Study on the Nature and the Metastable Decay Pathways of the Amino Acid Ion Fragment [M−H]−

Journal article published in 2007 by Helga Dögg Flosadóttir, Stephan Denifl, Fabio Zappa, Nina Wendt, Andreas Mauracher ORCID, Arntraud Bacher, Hannes Jónsson, Tilmann D. Märk, Paul Scheier, Oddur Ingólfsson
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Abstract

Breaking up is hard to do: The dominating negative ion fragment formed by dissociative electron attachment (DEA) to amino acids or by their ionization through MALDI is [M-H]-. Three different experimental techniques and molecular dynamics calculations are used to determine the site of hydrogen loss and which metastable decay pathways (for valine, see picture; blue nitrogen, red oxygen) dominate further decay. (Chemical Equation Presented).