Positive and negative ions of the amino acid histidine formed in low-energy electron collisions

Detalhes bibliográficos
Autor(a) principal: Meißner, Rebecca
Data de Publicação: 2019
Outros Autores: Feketeová, Linda, Bayer, Andreas, Postler, Johannes, Limão-Vieira, Paulo, Denifl, Stephan
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/10362/104986
Resumo: Agence Nationale de la Recherche, Grant/Award Numbers: ANR-10-LABX-0066 and ANR-11-IDEX-0007; Austrian Science Fund, Grant/Award Number: P30332; Ministerio da Ciencia, Tecnologia e Ensino Superior, Grant/Award Number: P7440-035-011; University of Innsbruck; Investissements d'Avenir; LABEX Lyon Institute of Origins; Institut de Physique Nucleaire de Lyon; Radiation Biology and Biophysics Doctoral Training Programme, Grant/Award Number: PD/00193/2012; Portuguese National Funding Agency FCT-MCTES, Grant/Award Numbers: PTDC/FIS-AQM/31281/2017, UID/FIS/00068/2019 and PD/BD/114452/2016; FWF, Vienna, Grant/Award Number: P30332
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spelling Positive and negative ions of the amino acid histidine formed in low-energy electron collisionsamino acidsanionscleavage reactionsionisation potentialsmass spectrometrySpectroscopyAgence Nationale de la Recherche, Grant/Award Numbers: ANR-10-LABX-0066 and ANR-11-IDEX-0007; Austrian Science Fund, Grant/Award Number: P30332; Ministerio da Ciencia, Tecnologia e Ensino Superior, Grant/Award Number: P7440-035-011; University of Innsbruck; Investissements d'Avenir; LABEX Lyon Institute of Origins; Institut de Physique Nucleaire de Lyon; Radiation Biology and Biophysics Doctoral Training Programme, Grant/Award Number: PD/00193/2012; Portuguese National Funding Agency FCT-MCTES, Grant/Award Numbers: PTDC/FIS-AQM/31281/2017, UID/FIS/00068/2019 and PD/BD/114452/2016; FWF, Vienna, Grant/Award Number: P30332Histidine is an aromatic amino acid crucial for the biological functioning of proteins and enzymes. When biological matter is exposed to ionising radiation, highly energetic particles interact with the surrounding tissue which leads to efficient formation of low-energy electrons. In the present study, the interaction of low-energy electrons with gas-phase histidine is studied at a molecular level in order to extend the knowledge of electron-induced reactions with amino acids. We report both on the formation of positive ions formed by electron ionisation and negative ions induced by electron attachment. The experimental data were complemented by quantum chemical calculations. Specifically, the free energies for possible fragmentation reactions were derived for the τ and the π tautomer of histidine to get insight into the structures of the formed ions and the corresponding neutrals. We report the experimental ionisation energy of (8.48 ± 0.03) eV for histidine which is in good agreement with the calculated vertical ionisation energy. In the case of negative ions, the dehydrogenated parent anion is the anion with the highest mass observed upon dissociative electron attachment. The comparison of experimental and computational results was also performed in view of a possible thermal decomposition of histidine during the experiments, since the sample was sublimated in the experiment by resistive heating of an oven. Overall, the present study demonstrates the effects of electrons as secondary particles in the chemical degradation of histidine. The reactions induced by those electrons differ when comparing positive and negative ion formation. While for negative ions, simple bond cleav ages prevail, the observed fragment cations exhibit partly restructuring of the molecule during the dissociation process.DF – Departamento de FísicaCeFITec – Centro de Física e Investigação TecnológicaRUNMeißner, RebeccaFeketeová, LindaBayer, AndreasPostler, JohannesLimão-Vieira, PauloDenifl, Stephan2020-09-30T22:23:09Z2019-10-012019-10-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article15application/pdfhttp://hdl.handle.net/10362/104986eng1076-5174PURE: 19001123https://doi.org/10.1002/jms.4427info:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2024-03-11T04:50:26Zoai:run.unl.pt:10362/104986Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-20T03:40:23.036774Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse
dc.title.none.fl_str_mv Positive and negative ions of the amino acid histidine formed in low-energy electron collisions
title Positive and negative ions of the amino acid histidine formed in low-energy electron collisions
spellingShingle Positive and negative ions of the amino acid histidine formed in low-energy electron collisions
Meißner, Rebecca
amino acids
anions
cleavage reactions
ionisation potentials
mass spectrometry
Spectroscopy
title_short Positive and negative ions of the amino acid histidine formed in low-energy electron collisions
title_full Positive and negative ions of the amino acid histidine formed in low-energy electron collisions
title_fullStr Positive and negative ions of the amino acid histidine formed in low-energy electron collisions
title_full_unstemmed Positive and negative ions of the amino acid histidine formed in low-energy electron collisions
title_sort Positive and negative ions of the amino acid histidine formed in low-energy electron collisions
author Meißner, Rebecca
author_facet Meißner, Rebecca
Feketeová, Linda
Bayer, Andreas
Postler, Johannes
Limão-Vieira, Paulo
Denifl, Stephan
author_role author
author2 Feketeová, Linda
Bayer, Andreas
Postler, Johannes
Limão-Vieira, Paulo
Denifl, Stephan
author2_role author
author
author
author
author
dc.contributor.none.fl_str_mv DF – Departamento de Física
CeFITec – Centro de Física e Investigação Tecnológica
RUN
dc.contributor.author.fl_str_mv Meißner, Rebecca
Feketeová, Linda
Bayer, Andreas
Postler, Johannes
Limão-Vieira, Paulo
Denifl, Stephan
dc.subject.por.fl_str_mv amino acids
anions
cleavage reactions
ionisation potentials
mass spectrometry
Spectroscopy
topic amino acids
anions
cleavage reactions
ionisation potentials
mass spectrometry
Spectroscopy
description Agence Nationale de la Recherche, Grant/Award Numbers: ANR-10-LABX-0066 and ANR-11-IDEX-0007; Austrian Science Fund, Grant/Award Number: P30332; Ministerio da Ciencia, Tecnologia e Ensino Superior, Grant/Award Number: P7440-035-011; University of Innsbruck; Investissements d'Avenir; LABEX Lyon Institute of Origins; Institut de Physique Nucleaire de Lyon; Radiation Biology and Biophysics Doctoral Training Programme, Grant/Award Number: PD/00193/2012; Portuguese National Funding Agency FCT-MCTES, Grant/Award Numbers: PTDC/FIS-AQM/31281/2017, UID/FIS/00068/2019 and PD/BD/114452/2016; FWF, Vienna, Grant/Award Number: P30332
publishDate 2019
dc.date.none.fl_str_mv 2019-10-01
2019-10-01T00:00:00Z
2020-09-30T22:23:09Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://hdl.handle.net/10362/104986
url http://hdl.handle.net/10362/104986
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 1076-5174
PURE: 19001123
https://doi.org/10.1002/jms.4427
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 15
application/pdf
dc.source.none.fl_str_mv reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron:RCAAP
instname_str Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron_str RCAAP
institution RCAAP
reponame_str Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
collection Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
repository.name.fl_str_mv Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
repository.mail.fl_str_mv
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