Open AccessThe structure of the oligosaccharides of alpha3beta1 integrin from human ureter epithelium (HCV29) cell line.
Author(s) -
Anna Lityń́ska,
Ewa Pocheć,
Dorota Hoja-Łukowicz,
E Kremser,
Piotr Laidler,
Angela Amoresano,
Chiara Monti
Publication year - 2002
Publication title -
acta biochimica polonica
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.452
H-Index - 78
eISSN - 1734-154X
pISSN - 0001-527X
DOI - 10.18388/abp.2002_3808
Subject(s) - integrin , chemistry , laminin , gel electrophoresis , epithelium , peptide , biochemistry , glycosylation , microbiology and biotechnology , extracellular matrix , biology , cell , genetics
There is a growing line of evidence that glycosylation of alpha and beta subunits is important for the function of integrins. Integrin alpha3beta1, from human ureter epithelium cell-line HCV29, was isolated by affinity chromatography on laminin GD6 peptide. Characterization of its carbohydrate moieties was carried out using sodium dodecyl sulfate/polyacrylamide gel electrophoresis followed by Western blotting on Immobilon P and on-blot deglycosylation with peptide N-glycosidase-F. Profiles of N-glycans for each subunit were obtained by matrix-assisted laser desorption/ionization mass spectrometry. Our findings demonstrated, in both subunits of integrin alpha3beta1, the presence of complex type oligosaccharides with a wide heterogeneity. Bi- tri- and tetraantennary structures were the most common, while high-mannose type structures were minor. Also the presence of short poly-N-acetyllactosamine entities was shown. These results show that while the predominant oligosaccharides of both subunits are identical, some slight differences between them do exist.