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TLC in Structure and Recognition Studies of Glycosphingolipids
Abstract
Glycosphingolipids (GSLs) are primarily located in the plasma membrane of animal cells, but are also found in association with intracellular organelles (1,2) GSLs consist of two structural elements: a lipophilic membrane anchor, the ceramide portion, which is formed by a long chain aminoalcohol and a fatty acid, and a hydrophilic carbohydrate moiety, which protrudes from the cell surface. Structures and functions of GSLs have been widely reviewed (38). They are divided into three main classes: neutral GSLs and acidic sialic acid-and sulfate-containing GSLs, the gangliosides and the sulfatides, respectively. Most GSLs can be grouped into one of four main structural families: the ganglio-, globo-, lacto-, and/or neolacto-series. Structures of neutral GSLs and gangliosides used in this protocol are listed in Tables 1 and 2, respectively. Their nomenclature follows the IUPAC-IUB recommendations (9) and the nomenclature of Svennerholm (10). Sialic acids are designated according to the suggestions of Reuter and Schauer (11).
Table 1  Structures of Neutral GSLs

Glycosphingolipid

Structure

LacCer

Galβ1-4Glcβ1-1Cer

GgOse3Cer

GaINAcβ1-4Galβ1-4Glcβ1-1Cer

GgOse4Cer

Galβ1-3GalNAcβ1-4Galβ1-4Glcβ1-1Cer

GgOse3Cer

Galα1-3Galβ1-4Glcβ1-1Cer

GbOse4Cer

GalNAcβ1-3Galα1-3Galβ1-4Glcβ1-1Cer

Forssman GSL

GalNAcα1-3GalNAcβ1-3Galα1-3Galβ1-4Galβ1-1Cer

LcOse3Cer

GlcNAcβ1-3Galβ1-4Glcβ1-1Cer

nLcOse4Cer

Galβ1-4GlcNAcβ1-3Galβ1-4Glcβ1-1Cer

nLcOse6Cer

Galβ1-4GlcNAcβ1-3Galβ1-4GlcNAcβ1-3Galβ1-4Glcβ1-1Cer

Table 2  Structures of Gangliosides

Ganglioside a

Structure

GM3

II3Neu5Ac-LacCer

GM1

II3Neu5Ac-GgOse4Cer

GD1a

IV3Neu5Ac, II3Neu5Ac-GgOse4Cer

GD1b

II3(Neu5Ac)2-GgOse4Cer

GT1b

IV3Neu5Ac,II3(Neu5Ac)2-GgOse4Cer

a Only gangliosides with Neu5Ac-substitution are shown
Affiliation(s): (2) Institute fur Zellkulturtechnik, Universitat Bielefeld, Bielefeld, Germany
Series: Methods in Molecular Biology  |  Volume: 76  |  Pub. Date: Feb-27-1998  |  Page Range: 183-195  |  DOI: 10.1385/0-89603-355-4:183
Subject:  Biochemistry
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