Synthesis and tandem mass spectrometry of chlorinated triacylglycerols
作者:Abir M. Lefsay、Robert D. Guy、Amares Chatt、Robert L. White
DOI:10.1016/j.chemphyslip.2013.07.001
日期:2013.9
addition of chlorine or bromine to tri-(cis-9-octadecenoyl)glycerol. Upon electrospray ionization and tandem mass spectrometry, the sodium adduct ions of all compounds containing a 9,10-dichlorooctadecanoyl group readily lost two molecules of HCl when subjected to collision-induced dissociation. A mechanism describing sequential HCl losses and the formation of a conjugateddiene is proposed for the loss
A continuous recording fluorescence assay was developed for cholesteryl ester transfer protein (CETP). The assay measures the increase in fluorescence accompanying the relocation of fluorescent lipids, cholesteryl esters and triglycerides, from a donor emulsion to an acceptor emulsion. In the absence of CETP, the quantum yields of the fluorescent lipids is low because their high concentrations in the donor emulsions result in self-quenching. CETP catalyzes the redistribution of the fluorescent lipids from the donor to the acceptor emulsions and fluorescence increases substantially. Efficient sonication and incorporation of apolipoproteins from human HDL into the emulsions significantly increased the transfer rates. Under optimal conditions, the redistribution of fluorescent compounds reaches equilibrium within <30 min and the kinetics of this process are consistent with a simple, first-order reaction pathway. The redistribution kinetics support a mechanism of adsorption double right arrow exchange double right arrow desorption double right arrow diffusion.
Suzuki; Yokoyama, Proceedings of the Imperial Academy (Tokyo), vol. 4, p. 163
作者:Suzuki、Yokoyama
DOI:——
日期:——
Suzuki, Proceedings of the Imperial Academy (Tokyo), vol. 5, p. 271
作者:Suzuki
DOI:——
日期:——
Suzuki, Proceedings of the Imperial Academy (Tokyo), vol. 5, p. 268