Journalartikel

Jahr der Veröffentlichung: 2011

Zeitschrift: The Journal of Chemical Physics

Bandnummer: 134

Heftnummer: 2

ISSN: 0021-9606

Open Access Status: Green

DOI Link: https://doi.org/10.1063/1.3515301

Verlag: American Institute of Physics

Abstract: 
Until now, photodissociation studies on free complex protonated peptides were limited to the UV wavelength range accessible by intense lasers. We have studied photodissociation of gas-phase protonated leucine-enkephalin cations for vacuum ultraviolet (VUV) photons energies ranging from 8 to 40 eV. We report time-of-flight mass spectra of the photofragments and various photofragment-yields as a function of photon energy. For sub-ionization energies our results are in line with existing studies on UV photodissociation of leucine-enkephalin. For photon energies exceeding 10 eV we could identify a new dissociation scheme in which photoabsorption leads to a fast loss of the tyrosine side chain. This loss process leads to the formation of a residual peptide that is remarkably cold internally. (C) 2011 American Institute of Physics. [doi:10.1063/1.3515301]

Harvard-Zitierstil: Bari, S., Gonzalez-Magana, O., Reitsma, G., Werner, J., Schippers, S., Hoekstra, R., et al. (2011) Photodissociation of protonated leucine-enkephalin in the VUV range of 8-40 eV, The Journal of Chemical Physics, 134(2), Article 024314. https://doi.org/10.1063/1.3515301

APA-Zitierstil: Bari, S., Gonzalez-Magana, O., Reitsma, G., Werner, J., Schippers, S., Hoekstra, R., & Schlathölter, T. (2011). Photodissociation of protonated leucine-enkephalin in the VUV range of 8-40 eV. The Journal of Chemical Physics. 134(2), Article 024314. https://doi.org/10.1063/1.3515301