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Near-Edge Soft X-ra...
Near-Edge Soft X-ray Absorption Mass Spectrometry of Protonated Melittin
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- Egorov, Dmitrii (författare)
- University of Groningen
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- Bari, Sadia (författare)
- German Electron Synchrotron (DESY)
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- Boll, Rebecca (författare)
- German Electron Synchrotron (DESY)
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- Dörner, Simon (författare)
- German Electron Synchrotron (DESY)
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- Deinert, Sascha (författare)
- German Electron Synchrotron (DESY)
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- Techert, Simone (författare)
- University of Göttingen,German Electron Synchrotron (DESY)
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- Hoekstra, Ronnie (författare)
- University of Groningen
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- Zamudio-Bayer, Vicente (författare)
- Helmholtz Association of German Research Centers,Albert-Ludwigs University Freiburg
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- Lindblad, Rebecka (författare)
- Lund University,Lunds universitet,Synkrotronljusfysik,Fysiska institutionen,Institutioner vid LTH,Lunds Tekniska Högskola,Synchrotron Radiation Research,Department of Physics,Departments at LTH,Faculty of Engineering, LTH,Helmholtz Association of German Research Centers
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- Bülow, Christine (författare)
- Helmholtz Association of German Research Centers,Technical University of Berlin
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- Timm, Martin (författare)
- Technical University of Berlin,Helmholtz Association of German Research Centers
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- von Issendorff, Bernd (författare)
- Albert-Ludwigs University Freiburg
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- Lau, J. Tobias (författare)
- Helmholtz Association of German Research Centers
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- Schlathölter, Thomas (författare)
- University of Groningen
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(creator_code:org_t)
- 2018-07-25
- 2018
- Engelska 14 s.
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Ingår i: Journal of the American Society for Mass Spectrometry. - : American Chemical Society (ACS). - 1044-0305. ; 29:11, s. 2138-2151
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http://dx.doi.org/10... (free)
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https://bib-pubdb1.d...
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https://lup.lub.lu.s...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- We have investigated the photoionization and photofragmentation yields of gas-phase multiply protonated melittin cations for photon energies at the K-shell absorption edges of carbon, nitrogen, and oxygen. Two similar experimental approaches were employed. In both experiments, mass selected [melittin+qH]q+ (q=2–4) ions were accumulated in radiofrequency ion traps. The trap content was exposed to intense beams of monochromatic soft X-ray photons from synchrotron beamlines and photoproducts were analyzed by means of time-of-flight mass spectrometry. Mass spectra were recorded for fixed photon energies, and partial ion yield spectra were recorded as a function of photon energy. The combination of mass spectrometry and soft X-ray spectroscopy allows for a direct correlation of protein electronic structure with various photoionization channels. Non-dissociative single and double ionization are used as a reference. The contribution of both channels to various backbone scission channels is quantified and related to activation energies and protonation sites. Soft X-ray absorption mass spectrometry combines fast energy deposition with single and double ionization and could complement established activation techniques. [Figure not available: see fulltext.].
Ämnesord
- NATURVETENSKAP -- Fysik -- Atom- och molekylfysik och optik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Atom and Molecular Physics and Optics (hsv//eng)
Nyckelord
- Melittin
- Photodissociation
- Protonated proteins
- Soft X-ray absorption
- Soft X-ray spectroscopy
Publikations- och innehållstyp
- art (ämneskategori)
- ref (ämneskategori)
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Till lärosätets databas
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Egorov, Dmitrii
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Bari, Sadia
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Boll, Rebecca
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Dörner, Simon
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Deinert, Sascha
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Techert, Simone
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visa fler...
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Hoekstra, Ronnie
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Zamudio-Bayer, V ...
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Lindblad, Rebeck ...
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Bülow, Christine
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Timm, Martin
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von Issendorff, ...
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Lau, J. Tobias
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Schlathölter, Th ...
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- NATURVETENSKAP
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och Fysik
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och Atom och molekyl ...
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