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  • Title: Characterization, distribution and biosynthesis of the major ganglioside of rat intestinal mucosa.
    Author: Glickman RM, Bouhours JF.
    Journal: Biochim Biophys Acta; 1976 Jan 22; 424(1):17-25. PubMed ID: 1252477.
    Abstract:
    The major sialic acid containing glycolipid has been isolated from rat intestinal mucosa. Characterization of this ganglioside by thin layer and gas chromatographic analysis indicates that it is an hematoside (GM3) with the major portion of the sialic acid in the N-glycolyl form. The distribution of this ganglioside was determined in villus and crypt cells isolated from rat intestine. The hematoside content of crypt cells was found to be significantly decreased when compared to villus cells. CMP-sialic acid:lactosylceramide sialyltransferase, responsible for the sialylation of lactosylceramide, was measured in differentiated villus and undifferentiated crypt cells and found to be greatly reduced in the crypt cell fraction. The present study demonstrates that marked differences in ganglioside content and biosynthesis occur in contiguous populations of cells in varying states of differentiation when isolated from normal rat intestine.
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