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  Multiple ionization of free ubiquitin molecular ions in extreme ultraviolet free-electron laser pulses.

Schlathölter, T., Reitsma, G., Egorov, D., Gonzalez-Magaña, O., Bari, S., Boschman, L., et al. (2016). Multiple ionization of free ubiquitin molecular ions in extreme ultraviolet free-electron laser pulses. Angewandte Chemie International Edition, 55(36), 10741-10745. doi:10.1002/anie.201605335.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-002B-7735-4 Version Permalink: http://hdl.handle.net/11858/00-001M-0000-002D-19BE-5
Genre: Journal Article

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 Creators:
Schlathölter, T., Author
Reitsma, G., Author
Egorov, D., Author
Gonzalez-Magaña, O., Author
Bari, S.1, Author              
Boschman, L., Author
Bodewits, E., Author
Schnorr, K., Author
Schmid, G., Author
Schröter, C. D., Author
Moshammer, R., Author
Hoekstra, R., Author
Affiliations:
1Research Group of Structural Dynamics of (Bio)Chemical Systems, MPI for Biophysical Chemistry, Max Planck Society, ou_578564              

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Free keywords: Free-electron lasers; Mass spectrometry; Multiphoton ionization; Photoionization; Proteins
 Abstract: The fragmentation of free tenfold protonated ubiquitin in intense 70 femtosecond pulses of 90 eV photons from the FLASH facility was investigated. Mass spectrometric investigation of the fragment cations produced after removal of many electrons revealed fragmentation predominantly into immonium ions and related ions, with yields increasing linearly with intensity. Ionization clearly triggers a localized molecular response that occurs before the excitation energy equilibrates. Consistent with this interpretation, the effect is almost unaffected by the charge state, as fragmentation of sixfold deprotonated ubiquitin leads to a very similar fragmentation pattern. Ubiquitin responds to EUV multiphoton ionization as an ensemble of small peptides.

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Language(s): eng - English
 Dates: 2016-07-252016-08-26
 Publication Status: Published in print
 Pages: -
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 Rev. Method: Peer
 Identifiers: DOI: 10.1002/anie.201605335
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Title: Angewandte Chemie International Edition
Source Genre: Journal
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Pages: - Volume / Issue: 55 (36) Sequence Number: - Start / End Page: 10741 - 10745 Identifier: -