J. Biol. Chem., Vol. 261, Issue 12, 5233-5236, Apr, 1986
An apo-E-free very low density lipoprotein enriched in phosphatidylethanolamine in human plasma
PE Fielding and CJ Fielding
Normal human plasma contains a fraction of very low density lipoprotein
(VLDL) which, unlike most VLDL, contains no apolipoprotein E and, unlike
apo-E-containing VLDL, is enriched in phosphatidylethanolamine. This
fraction made up 0.28 +/- 0.09 of total VLDL triglyceride. Interconversion
of the two isolated VLDL fractions was not detected during incubation (2 h,
37 degrees C) and they may represent the physical forms of apo-B
corresponding to distinct metabolic pathways in plasma.