Abstract:
Affinity chromatography on Concanavalin-A Sepharose, followed by gel filtration and hydrophobic interaction chromatography, permits the isolation of low molecular weight N-glycosidically linked oligomannosidic glycopeptides (MGp) from the autoproteolysis products of human seminal plasma. The monosaccharide composition of MGp showed only mannose, N-acetylglucosamine and a small amount of galactose. Structural studies were carried out by methylation analysis and chromium trioxide oxidation, and results were consistent with the structures accepted for high-mannose N-glycans. MGp was capable of inhibiting the sperm acrosomal exocytosis mediated by sperm- surface receptors. These data suggest that MGp act as a 'decapacitation' factor preventing premature sperm exocytosis.
Registro:
Documento: |
Artículo
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Título: | Isolation, partial characterization and biological activity of mannosyl glycopeptides from seminal plasma |
Autor: | Lopes, C.H.G.L.; Mazzini, M.N.; Tortorella, H.; Konrath, R.A.; Brandelli, A. |
Filiación: | Departamento de Bioquímica, Instituto de Biociências, Univ. Federal do Rio Grande do Sul, 90050-170 Porto Alegre, Brazil Depto. de Química Organica, Fac. de Ciencias Exactas y Naturales, Universidad de Buenos Aires, 1428 Buenos Aires, Argentina Depto. de Cie. dos Alimentos, ICTA, Univ. Federal do Rio Grande do Sul, 91501 970 Porto Alegre, Brazil ICTA-UFRGS, Av. Bento Gonçalves 9500, 91501-970 Porto Alegre, Brazil
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Palabras clave: | Carbohydrate; Exocytosis; Glycoconjugate; Human; Semen; Sperm; glycopeptide; mannose; acrosome; affinity chromatography; article; carbohydrate analysis; exocytosis; human; male; normal human; priority journal; seminal plasma; Acrosome Reaction; Carbohydrate Conformation; Chromatography, Affinity; Chromatography, Gas; Chromatography, Gel; Exocytosis; Glycopeptides; Humans; Male; Mannose; Oligosaccharides; Semen |
Año: | 1998
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Volumen: | 15
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Número: | 5
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Página de inicio: | 477
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Página de fin: | 481
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DOI: |
http://dx.doi.org/10.1023/A:1006982919464 |
Título revista: | Glycoconjugate Journal
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Título revista abreviado: | Glycoconjugate J.
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ISSN: | 02820080
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CODEN: | GLJOE
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CAS: | Glycopeptides; Mannose, 31103-86-3; Oligosaccharides
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Registro: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_02820080_v15_n5_p477_Lopes |
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Citas:
---------- APA ----------
Lopes, C.H.G.L., Mazzini, M.N., Tortorella, H., Konrath, R.A. & Brandelli, A.
(1998)
. Isolation, partial characterization and biological activity of mannosyl glycopeptides from seminal plasma. Glycoconjugate Journal, 15(5), 477-481.
http://dx.doi.org/10.1023/A:1006982919464---------- CHICAGO ----------
Lopes, C.H.G.L., Mazzini, M.N., Tortorella, H., Konrath, R.A., Brandelli, A.
"Isolation, partial characterization and biological activity of mannosyl glycopeptides from seminal plasma"
. Glycoconjugate Journal 15, no. 5
(1998) : 477-481.
http://dx.doi.org/10.1023/A:1006982919464---------- MLA ----------
Lopes, C.H.G.L., Mazzini, M.N., Tortorella, H., Konrath, R.A., Brandelli, A.
"Isolation, partial characterization and biological activity of mannosyl glycopeptides from seminal plasma"
. Glycoconjugate Journal, vol. 15, no. 5, 1998, pp. 477-481.
http://dx.doi.org/10.1023/A:1006982919464---------- VANCOUVER ----------
Lopes, C.H.G.L., Mazzini, M.N., Tortorella, H., Konrath, R.A., Brandelli, A. Isolation, partial characterization and biological activity of mannosyl glycopeptides from seminal plasma. Glycoconjugate J. 1998;15(5):477-481.
http://dx.doi.org/10.1023/A:1006982919464