title: The demonstration of O-acetylated sialic acids in colonic epithelial glycoproteins.
abstract: Glycoproteins have been isolated from a 1 M sodium chloride extract of the colonic epithelial cells of man and rat by a combination of Agarose gel and DEAE-cellulose chromatography; The glycoproteins contain O-acetylated or O-esterified sialic acids of at least four types: (a) unsubstituted or possible at position C-9, (b) substituted at C-4 and possibly at C-9, (c) substituted at C-7 and/or C-8, and (d) substituted at C-4 as well as at C-7 and/or C-8.
mesh_terms: D000818:Animals; D002850:Chromatography, Gel; D003106:Colon / Q000032:analysis*; D004848:Epithelium / Q000032:analysis; D005643:Fucose / Q000032:analysis; D005690:Galactose / Q000032:analysis; D006023:Glycoproteins / Q000032:analysis; D006595:Hexosamines / Q000032:analysis; D006801:Humans; D007413:Intestinal Mucosa / Q000032:analysis; D009439:Neuraminidase; D051381:Rats; D012794:Sialic Acids / Q000032:analysis*; D013045:Species Specificity; D014462:Ultrafiltration; D014734:Vibrio cholerae
chemical_list: D006023:Glycoproteins; D006595:Hexosamines; D012794:Sialic Acids; D005643:Fucose; D009439:Neuraminidase; D005690:Galactose