Fragmentation of tryptophan by low-energy electrons
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| Title: | Fragmentation of tryptophan by low-energy electrons |
|---|---|
| Authors: | Abdoul-Carime, H. hcarime@chemie.fu-berlin.de, Gohlke, S.1, Illenberger, E.1 |
| Source: | Chemical Physics Letters. Feb2005, Vol. 402 Issue 4-6, p497-502. 6p. |
| Subjects: | Particles (Nuclear physics), Amino acids, Scission (Chemistry), Molecular dynamics |
| Abstract: | Abstract: Decomposition of gas phase tryptophan (trp) following low energy (<10 eV) electron attachment is investigated by means of a crossed electron/molecular beam experiment. Various negatively charged species are observed, attributed to (trp−H)− (203 amu), (gly-yl)− (74 amu), (45 amu), CN− (26 amu), OH− (17 amu), and (16 amu). These fragments arise from either simple bond cleavages (e.g., (trp−H)−) or more complex reaction involving molecular rearrangements within the transitory negative ion (e.g., (HCO2)−). Surprisingly, by far the most predominant dissociation processes occur at sub-excitation energies (below the threshold of the electronic excitation). The present Letter may contribute to a better understanding of the initial molecular processes taking place during the interaction of radiation with living systems. [Copyright &y& Elsevier] |
| Copyright of Chemical Physics Letters is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
| FullText | Text: Availability: 0 |
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| Header | DbId: egs DbLabel: Engineering Source An: 22260153 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Fragmentation of tryptophan by low-energy electrons – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Abdoul-Carime%2C+H%2E%22">Abdoul-Carime, H.</searchLink><i> hcarime@chemie.fu-berlin.de</i><br /><searchLink fieldCode="AR" term="%22Gohlke%2C+S%2E%22">Gohlke, S.</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Illenberger%2C+E%2E%22">Illenberger, E.</searchLink><relatesTo>1</relatesTo> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Chemical+Physics+Letters%22">Chemical Physics Letters</searchLink>. Feb2005, Vol. 402 Issue 4-6, p497-502. 6p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Particles+%28Nuclear+physics%29%22">Particles (Nuclear physics)</searchLink><br /><searchLink fieldCode="DE" term="%22Amino+acids%22">Amino acids</searchLink><br /><searchLink fieldCode="DE" term="%22Scission+%28Chemistry%29%22">Scission (Chemistry)</searchLink><br /><searchLink fieldCode="DE" term="%22Molecular+dynamics%22">Molecular dynamics</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: Abstract: Decomposition of gas phase tryptophan (trp) following low energy (<10 eV) electron attachment is investigated by means of a crossed electron/molecular beam experiment. Various negatively charged species are observed, attributed to (trp−H)− (203 amu), (gly-yl)− (74 amu), (45 amu), CN− (26 amu), OH− (17 amu), and (16 amu). These fragments arise from either simple bond cleavages (e.g., (trp−H)−) or more complex reaction involving molecular rearrangements within the transitory negative ion (e.g., (HCO2)−). Surprisingly, by far the most predominant dissociation processes occur at sub-excitation energies (below the threshold of the electronic excitation). The present Letter may contribute to a better understanding of the initial molecular processes taking place during the interaction of radiation with living systems. [Copyright &y& Elsevier] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Chemical Physics Letters is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1016/j.cplett.2004.12.073 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 6 StartPage: 497 Subjects: – SubjectFull: Particles (Nuclear physics) Type: general – SubjectFull: Amino acids Type: general – SubjectFull: Scission (Chemistry) Type: general – SubjectFull: Molecular dynamics Type: general Titles: – TitleFull: Fragmentation of tryptophan by low-energy electrons Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Abdoul-Carime, H. – PersonEntity: Name: NameFull: Gohlke, S. – PersonEntity: Name: NameFull: Illenberger, E. IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 02 Text: Feb2005 Type: published Y: 2005 Identifiers: – Type: issn-print Value: 00092614 Numbering: – Type: volume Value: 402 – Type: issue Value: 4-6 Titles: – TitleFull: Chemical Physics Letters Type: main |
| ResultId | 1 |
