Length effects in VUV photofragmentation of protonated peptides

Olmo Gonzalez Magana, G. Reitsma, S. Bari, R. Hoekstra, Thomas Schlathölter*

*Bijbehorende auteur voor dit werk

OnderzoeksoutputAcademicpeer review

16 Citaten (Scopus)


We have studied photoionization of protonated synthetic peptides YG(n)F (n = 0, 1, 3, 5, 10). Photon energies ranging from 8 to 30 eV were used. For YG(n)F peptides up to n = 5 small fragment ions related to the sidechains of the aromatic terminal amino acids Y and F dominate the fragmentation patterns. The associated yields scale with total photoabsorption cross section, demonstrating efficient hole migration towards the terminal amino acids upon photoionization of the peptide backbone. For n = 10 the side-chain loss channel is quenched and a series of large dications appear.

Originele taal-2English
Pagina's (van-tot)4351-4354
Aantal pagina's4
TijdschriftPhysical Chemistry Chemical Physics
Nummer van het tijdschrift13
StatusPublished - 2012

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