セトウチマイマイのスフィンゴ脂質　（第１報）　内臓部のセラミドモノヘキソシドとスフィンゴホスホノ脂質

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タイトル別名
  • Sphingolipids of Euhadra hickonis. I. Ceramide Monohexosides and Sphingophosphonolipids of Viscera.
  • セトウチマイマイ ノ スフィンゴ シシツ ダイ 1ポウ ナイゾウブ ノ セラミ
  • Ceramide Monohexosides and Sphingophosphonolipids of Viscera
  • 内臓部のセラミドモノヘキソシドとスフィンゴホスホノ脂質

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Examination was made of ceramide monohexosides and sphingophosphonolipids (SPnL) from the viscera of Euhadra hickonis. E. Hickonis belongs to Pulmonata in animal classification, and is a popular land snail in evolutional and biological respects.<BR>Conjugated lipids were extracted with chloroform-methanol (2 : 1, by vol) following that of simple lipids with acetone. SPnL, galactosylceramide (Gal-Cer), and glucosylceramide (Glc-Cer) as main sphingolipids were separated and purified by silicic acid column and borate column chromatography. The purified sphingolipids were identified by TLC, fast atom bombardment mass spectrometry (FAB/MS), analysis of degradation products and quantitative analysis of sugar, long chain base, phosphorus and fatty acid ester.<BR>The ceramide monohexosides consisted of 53.8% of Gal-Cer and 46.2% of Glc-Cer. The ratio of ceramide aminoethylphosphonate (CAEP) to ceramide N-methylaminoethylphosphonate (CMAEP) was about 54 : 46 in the FAB/MS positive ion mode and 73 : 27 in the FAB/MS negative ion mode. This ratio essentially the same as that for SPnL of sea abalone muscle.<BR>The ratio of non-hydroxy fatty acid to α-hydroxy fatty acid was about 1 : 1 in SPnL, 1 : 9 in Gal-Cer, and 1 : 1 in Glc-Cer.<BR>Main component of long chain bases of these sphingolipids was anteiso branched C19-sphingenine. The most remarkable feature of these bases in E. hickonis was the large amount of oddnumbered branched sphingenine and Pulmonata would thus appear closely related to Opisthobranchia.

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  • 日本油化学会誌

    日本油化学会誌 45 (9), 839-847, 1996

    公益社団法人 日本油化学会

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