D. Ardail et al., Occurrence of ceramides and neutral glycolipids with unusual long-chain base composition in purified rat liver mitochondria, FEBS LETTER, 488(3), 2001, pp. 160-164
The free ceramide content of rat liver mitochondria was found to be 1.7 nmo
l/mg protein and outer membranes contained a three-fold higher concentratio
n than inner membranes. The mitochondrial content in neutral glycolipids wa
s 0.6 nmol/mg protein. The long-chain bases found in free ceramides were d1
8:I sphingosine, d18:0 3-ketosphinganine and t21:1 phytosphingosine in incr
easing order. In contrast, 3-ketosphinganine was the only base of glucosglc
eramide and lactosylceramide of inner membranes, whereas d18:I sphingosine
was the major long-chain base of glucosylceramide of outer membranes. (C0)
2001 Federation of European Biochemical Societies, Published by Elsevier Sc
ience B.V. All rights reserved.