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  • Title: Structural characterization of a novel glycoinositolphospholipid from the parasitic nematode, Ascaris suum.
    Author: Sugita M, Mizunoma T, Aoki K, Dulaney JT, Inagaki F, Suzuki M, Suzuki A, Ichikawa S, Kushida K, Ohta S, Kurimoto A.
    Journal: Biochim Biophys Acta; 1996 Aug 16; 1302(3):185-92. PubMed ID: 8765138.
    Abstract:
    A novel glycosphingolipid containing inositol phosphate as an acidic group has been demonstrated in whole tissues of the porcine roundworm, Ascaris suum. The thin layer chromatographic pattern of the total acidic glycolipid revealed the presence of several components, of which a major component (named AGL) with positive reactions toward both orcinol-sulfuric acid (sugar) and molybdate (phosphate) spray reagents was isolated and purified by the use of successive column chromatography on DEAE-Sephadex and silicic acid (latrobeads). From structural studies including compositional sugar analysis, hydrogen fluoride degradation, methylation analysis, periodate oxidation, proton magnetic resonance spectroscopy and fast atom bombardment mass spectrometry, the structure of AGL was deduced to be Gal alpha 1-2Ins(1-->)-P-Cer. Aliphatic constituents were lignoceric acid and its 2-hydroxy homologue as the principal fatty acids, and octadecasphinganine and branched heptadecasphinganine as the major sphingoids.
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