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酸乙醇胺诱导的胆固醇域通过质谱成像化学识别

Audra G Sostarecz1, Carolyn M McQuaw, Andrew G Ewing

  • 1Department of Chemistry, The Pennsylvania State University, 104 Chemistry Building, University Park, Pennsylvania, 16802, USA.

Journal of the American Chemical Society
|October 28, 2004
PubMed
概括

在模型膜中化学识别了胆固醇 (CH) 与脂的相互作用. 使用酸丁乙醇胺 (PE) 的系统显示出明显的富含CH和富含脂的区域,与使用双基酸丁胆 (PC) 的系统不同.

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The fragmentation patterns observed for compounds such as carboxylic acids, esters, and amides in the mass spectra include ⍺-cleavage and McLafferty rearrangement. Fragmentation by ⍺-cleavage preferentially occurs at the carbon-carbon bond at the ⍺-position next to the carboxylic group to generate a neutral radical and a cation. Long chain compounds with hydrogen at their γ-carbon undergo McLafferty rearrangement to give a radical cation and a neutral alkene.
For example, the fragmentation of...