Studies on glycosphingolipids of fresh-water bivalves. VI. Isolation and chemical characterization of neutral glycosphingolipids from spermatozoa of the fresh-water bivalve, Hyriopsis schlegelii.

Abstract:

:The spermatozoa of the fresh-water bivalve, Hyriopsis schlegelii, had a complex spectrum of neutral glycosphingolipids. CDS, CTS, CTeS were isolated as minor components (together they accounted for 3% of the total neutral glycolipid fraction), while CMS and the glycolipids (Lipid I, II, and III) with larger saccharide chains that were previously characterized (1--4) occurred as major ones. The chemical structures were determined by employing exoglycosidases, partial acid hydrolysis and permethylation analysis. The proposed structures are as follows: Man alpha(1-3)Man beta(1-4)Glc-Cer for CTS, and Man alpha(1-3)[Xyl beta(1-2)]Man beta(1-4)Glc-Cer for CTeS. CTeS was the first example of a tetraglycosyl ceramide containing xylose. In another fraction, two types of diglycosyl ceramides were obtained as a mixture, and identified as Man beta(1-4)Glc-Cer and Gal beta(1-4)Glc-Cer, respectively. The long-chain base was predominantly composed of sphingosine, and the acyl groups were mainly of palmitate and stearate.

journal_name

J Biochem

journal_title

Journal of biochemistry

authors

Sugita M,Yamamoto T,Masuda S,Itasaka O,Hori T

doi

10.1093/oxfordjournals.jbchem.a133620

subject

Has Abstract

pub_date

1981-11-01 00:00:00

pages

1529-35

issue

5

eissn

0021-924X

issn

1756-2651

journal_volume

90

pub_type

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