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Ornithine-containing lipid from Actinomyces globisporus
ConclusionsFrom the cell lipids ofActinomyces globisporus 1131 a lipo amino acid has been isolated which is a N2-[L-(3′-acyloxy)acyl]-L-ornithine. The configurations of all the asymmetric centers inExpand
Diol lipids. XXII. The occurrence of diol choline phosphatides in rat liver.
The absolute quantity of diol phosphatides in rat liver is extremely low; however, in the choline plasmalogen fraction dihydric alcohols constitute an appreciable proportion of the alcohol moieties. Expand
Diol lipids, XX). Alkyl and alk-1-enyl ethers of ethanediol in lipids of starfish
Abstract Tissues of the starfish Distolasterias nipon contain large amounts of lipids derived from ethanediol ethers. The neutral lipid fraction yielded, by combined column and thin-layerExpand
Mass spectrometry of hexuronosyldiglycerides
The fragmentation under electron impact of the molecular ions of synthetic methyl esters of 1,2-di-O-acyl-3-O-(2',3',4'-tri-O-acetyl-β-D-glucopyranuronosyl)-L-glycerides was studied. MassExpand
Molecular species analysis of lipids by metastable ion mass spectrometry.
A convenient universal and fast mass spectrometrical method designed for the molecular species analysis of natural lipids is described, which relies on the recognition of ions characteristic of individual molecular species in the mass spectrum of a particular lipid fraction on the basis of metastable ion spectra. Expand
Plasma desorption mass spectrometry of haemoglobin tryptic peptides for the characterization of a Hungarian alpha-chain variant.
Almost all the expected alpha A and beta A tryptic fragments were tentatively assigned relative to the known globin chain sequences based on the molecular weight obtained by plasma desorption mass spectrometric analysis of the purified peptides. Expand
Influence of ganglioside GM3 and its breakdown products on lymphoblastic transformation and T-suppressor activity.
It is suggested that the effects ofGM3 and its breakdown products on lymphoblastic transformation and T-suppressor activity must rest on different mechanisms and that N-deacylation of GM3 appears to be an essential step in conversion of the ganglioside into an inhibitor of lymphocyte blast transformation. Expand
Chromatographic and mass spectral studies of perfluorooctanesulfonate and three perfluorooctanesulfonamides.
  • D. Kuehl, B. Rozynov
  • Chemistry, Medicine
  • Rapid communications in mass spectrometry : RCM
  • 30 October 2003
The chromatographic and mass spectral characteristics of perfluorooctanesulfonate (PFOS) and three nitrogen-substituted perfluorsulfonamides have been obtained and product ions that could be used to detect the presence of these compounds in biological or environmental samples are produced. Expand
Ammonia/desorption chemical ionization mass spectrometry of some cyclopentane iridoid glucosides
The ammonia/desorption chemical ionization (DCI) mass spectra of nine cyclopentane iridoid glucosides were measured. The dependences cf the intensities of different peaks on the structures andExpand