The Ceramide Structure of GM1 Ganglioside Differently Affects Its Recovery in Low-density Membrane Fractions Prepared from HL-60 Cells with or Without Triton-X100
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Cell Biology
Molecular Biology
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Gangliosides are characteristically enriched in various membrane domains that can be isolated as low density membrane fraction insoluble in detergents (detergent-resistant membranes, DRMs) or obtained after homogenization and sonication in 0.5 M sodium carbonate (low-density membranes, LDMs). We assessed the effect of the ceramide structure of four [(3)H]-labeled GM1 ganglioside molecular species (GM1s) taken up by HL-60 cells on their occurrence in LDMs, and compared it with our previous observations for DRMs. All GM1s contained C18 sphingosine, which was acetylated in GM1(18:1/2) or acylated with C(14), C(18) or C(18:1) fatty acids (Fas).
Tanaka K, Yamada M, Tamiya-Koizumi K, Kannagi R, Aoyama T, Hara A Glycoconj J. 2011; 28(2):67-87.
PMID: 21400001 DOI: 10.1007/s10719-011-9325-6.