Temat: Fourier transform ion cyclotron resonance mass spectrometry - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Micro-capillary liquid chromatography Fourier transform ion cyclotron resonance mass spectrometry—apowerful tool for peptide and protein identification.
Autorzy:: Ramström, Margareta
Palmblad, Magnus
Amirkhani, Ardeshir
Tsybin, Youri
Markides, Karin
Håkansson, Per
Bergquist, Jonas
Powiązania:: https://bibliotekanauki.pl/articles/1044053.pdf
Data publikacji:: 2001
Wydawca:: Polskie Towarzystwo Biochemiczne
Tematy:: liquid-chromatography
peptides
Fourier transform ion cyclotron resonance mass spectrometry
proteins
Opis:: In order to be able to study complex biological samples, a micro-capillary liquid chromatography system was coupled to a 9.4 T Fourier transform ion cyclotron resonance mass spectrometer. The setup was tested on a tryptic digest of bovine serum albumin, which resulted in high sequence coverage (> 92% the protein.
Źródło:: Acta Biochimica Polonica; 2001, 48, 4; 1101-1104
0001-527X
Pojawia się w:: Acta Biochimica Polonica
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Chemical footprint of the solvent soluble extraterrestrial organic matter occluded in Sołtmany ordinary chondrite
Autorzy:: Schmitt-Kopplin, P.
Harir, M.
Kanawati, B.
Tziozis, D.
Hertkorn, N.
Gabelica, Z.
Powiązania:: https://bibliotekanauki.pl/articles/411511.pdf
Data publikacji:: 2012
Wydawca:: Polskie Towarzystwo Meteorytowe
Tematy:: ordinary chondrite
extraterrestrial organic matter
carbon
nitrogen
sulphur
meteorite
Sołtmany
nuclear magnetic
resonance spectroscopy (NMR)
Fourier transform ion cyclotron resonance mass spectrometry (FT-ICR-MS)
Opis:: By characterizing organic molecules of extra-terrestrial origin included in the Sołtmany meteorite, we also present the first results of the non-targeted chemical analysis of the methanol soluble organic matter present in an L6 ordinary chondrite. The structural characterization by means of ultrahigh resolution Fourier transform ion cyclotron mass spectrometry (FT-ICR-MS) with electrospray ionization (ESI) in negative and positive modes demonstrated an unexpected and astonishing chemical diversity with several thousand mass peaks that could be converted into C, H, N, O, S, and P elemental compositions. Molecular signatures were typically those of considerably oxygenated CHO and CHOS molecular series of primarily aliphatic character. 1H nuclear magnetic resonance (NMR) spectroscopy confirmed the prevalent existence of pure and functionalized aliphatic spin systems of intermediate chain length (C3-4 units), oxygenated aliphatics and a considerable diversity of oxygenated aromatics in the proton-based abundance ratio near 24 : 2 : 1. Although only residual organic matter allegedly survives in highly thermally altered L6 chondrites, the physical protection of organic matter in microcavities and traps between mineral surfaces might have supported and governed the chemistry with an apparent recalcitrance of extraterrestrial organic matter (EOM). Future studies of the organic matter in ordinary chondrites and its composition and structure in various regimes of (e.g.) temperature, radiation, pressure, and water content could shed light on these meteorites’ formation and evolution.
Źródło:: Meteorites; 2012, 2, No. 1-2; 79-92
2299-0313
2299-1220
Pojawia się w:: Meteorites
Dostawca treści:: Biblioteka Nauki

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