IDENTIFICATION AND CHARACTERIZATION OF CHIROINOSITOL-CONTAINING PHOSPHOLIPIDS FROM BOVINE LIVER

被引:27
作者
PAK, YB
LARNER, J
机构
[1] Department of Pharmacology, University of Virginia, School of Medicine, Charlottesville
关键词
D O I
10.1016/0006-291X(92)90696-I
中图分类号
Q5 [生物化学]; Q7 [分子生物学];
学科分类号
071010 ; 081704 ;
摘要
Glycosylphosphatidylinositols and phosphatidylinositols, postulated as precursor species of insulin mediators, were investigated for the presence of myoinositol, chiroinositol, glucosamine and galactosamine in their carbohydrate moities. Our study of bovine liver lipids shows heterogeneity in glycosylphosphatidylinositols with at least two species containing 96-97% chiroinositol and 95-100% galactosamine, with molar ratios of chiroinositol: phosphate: galactosamine: galactose: mannose (1:1.8:1:3:2 and 1:1.2:1:1.6:1). Another species contained predominantly myoinositol and glucosamine. Furthermore, we identified phosphatidylinositols with either myoinositol or chiroinositol present. Thus, distinct myoinositol and chiroinositol species of glycosylphosphatidylinositols and phosphatidylinositols are present in bovine liver. © 1992.
引用
收藏
页码:1042 / 1047
页数:6
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