التفاصيل البيبلوغرافية
| العنوان: |
X-ray induced fragmentation of protonated cystine |
| المؤلفون: |
Gopakumar, G. (Geethanjali), Lindblad, R. (Rebecka), Svensson, P. H. (Pamela H. W.), Grånäs, O. (Oscar), Brena, B. (Barbara), Schwob, L. (Lucas), Unger, I. (Isaak), Saak, C.-M. (Clara-Magdalena), Timm, M. (Martin), Bülow, C. (Christine), Kubin, M. (Markus), Zamudio-Bayer, V. (Vicente), Lau, J. T. (J. Tobias), von Issendorff, B. (Bernd), Abid, A. R. (Abdul R.), Lindblad, A. (Andreas), Danielsson, E. (Emma), Koerfer, E. (Ebba), Caleman, C. (Carl), Björneholm, O. (Olle) |
| بيانات النشر: |
American Chemical Society |
| سنة النشر: |
2022 |
| المجموعة: |
Jultika - University of Oulu repository / Oulun yliopiston julkaisuarkisto |
| الوصف: |
We demonstrate site-specific X-ray induced fragmentation across the sulfur L-edge of protonated cystine, the dimer of the amino acid cysteine. Ion yield NEXAFS were performed in the gas phase using electrospray ionization (ESI) in combination with an ion trap. The interpretation of the sulfur L-edge NEXAFS spectrum is supported by Restricted Open-Shell Configuration Interaction (ROCIS) calculations. The fragmentation pathway of triply charged cystine ions was modeled by Molecular Dynamics (MD) simulations. We have deduced a possible pathway of fragmentation upon excitation and ionization of S 2p electrons. The disulfide bridge breaks for resonant excitation at lower photon energies but remains intact upon higher energy resonant excitation and upon ionization of S 2p. The larger fragments initially formed subsequently break into smaller fragments. |
| نوع الوثيقة: |
article in journal/newspaper |
| وصف الملف: |
application/pdf |
| اللغة: |
English |
| الإتاحة: |
http://urn.fi/urn:nbn:fi-fe2022051635581Test |
| حقوق: |
info:eu-repo/semantics/openAccess ; © 2022 The Authors. Published by American Chemical Society. Published under the Creative Commons Attribution 4.0 International (CC BY 4.0) license. ; https://creativecommons.org/licenses/by/4.0Test/ |
| رقم الانضمام: |
edsbas.6956AA1F |
| قاعدة البيانات: |
BASE |
