Irradiation of isolated collagen mimetic peptides by x rays and carbon ions at the Bragg-peak energy

M. Lalande, M. Abdelmouleh, M. Ryszka, V. Vizcaino, J. Rangama, A. Mery, F. Durante, T. Schlatholter, J-C Poully*

*Bijbehorende auteur voor dit werk

OnderzoeksoutputAcademicpeer review

4 Citaten (Scopus)
46 Downloads (Pure)


We report on an experimental irradiation of isolated peptides by carbon ions at the Bragg-peak energy. Collagen mimetic peptides and their noncovalent complexes undergo nondissociative ionization, but also inter- and intramolecular fragmentation induced by internal energy transfer. We also detect nondissociative proton detachment, an ion-specific process. The average amount of energy transferred by ions is similar to the case of x-ray single photoabsorption, and our results indicate that it changes with the conformation and size of a given molecular system. Our work paves the way to experimental investigation of high-energy ion collisions involving proteins and DNA strands, to investigate the role of ion kinetic energy in internal energy deposition.

Originele taal-2English
Aantal pagina's6
TijdschriftPhysical Review A
Nummer van het tijdschrift6
StatusPublished - 3-dec.-2018

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