title: Proteoglycans of human gingival epithelium and connective tissue.
abstract: Proteoglycans extracted from separated specimens of healthy human gingival epithelium and from connective tissue have been purified. The epithelial proteoglycans fractionated as a single included peak on Sepharose 4B-CL and contained heparan sulphate and dermatan sulphate glycosaminoglycans. The connective-tissue proteoglycans separated into three major populations on Sepharose 4B-CL, one of which was excluded from this gel under associative conditions (0.5 M-sodium acetate, pH 7.4). Subsequent fractionation of the excluded material under dissociative conditions (4 M-guanidinium chloride/0.05 M-sodium acetate, pH 7.4) revealed an absence of any aggregate formation of molecules within this population. The connective-tissue proteoglycans contained heparan sulphate, dermatan sulphate and chondroitin 4-sulphate, the proportions of which varied with the molecular size of the proteoglycans. Amino acid analysis of the protein cores of gingival-epithelial and connective-tissue proteoglycans revealed differences that were similar to the differences described between other types of proteoglycans such as those from skin.
mesh_terms: D000596:Amino Acids / Q000032:analysis; D055598:Chemical Phenomena; D002621:Chemistry; D002850:Chromatography, Gel; D003238:Connective Tissue / Q000032:analysis; D003871:Dermatan Sulfate / Q000032:analysis; D004848:Epithelium / Q000032:analysis; D005881:Gingiva / Q000032:analysis*; D006025:Glycosaminoglycans / Q000032:analysis; D006497:Heparan Sulfate / Q000032:analysis; D006801:Humans; D011509:Proteoglycans / Q000302:isolation & purification
chemical_list: D000596:Amino Acids; D003871:Dermatan Sulfate; D006025:Glycosaminoglycans; D006497:Heparan Sulfate; D011509:Proteoglycans