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5.
Proc Natl Acad Sci U S A ; 70(12): 3390-4, 1973 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-4519632

RESUMEN

Incubation of GDP-[(14)C]mannose with liver microsomes and magnesium ions led to the formation of dolichol monophosphate mannose and of other acidlabile compounds that contain oligosaccharides. Formation of these compounds was enhanced by addition of an acceptor lipid in the same fractions of DEAE-cellulose chromatography where bound dolichol is found. Alkaline treatment of the oligosaccharides, obtained by acid methanolysis, followed by paper electrophoresis, gave rise to the formation of two positively charged substances believed to be formed by deacetylation of hexosamine residues. Incubation of the oligosaccharide-containing compounds with liver microsomes and manganese ions resulted in a transfer to endogenous protein. The role of dolichol derivatives in glycoprotein synthesis is discussed.


Asunto(s)
Diterpenos/metabolismo , Alcoholes Grasos/metabolismo , Glicoproteínas/biosíntesis , Manosa/metabolismo , Microsomas Hepáticos/metabolismo , Oligosacáridos/biosíntesis , Animales , Radioisótopos de Carbono , Cromatografía DEAE-Celulosa , Cromatografía en Papel , Transporte de Electrón , Nucleótidos de Guanina/metabolismo , Hidrólisis , Técnicas In Vitro , Magnesio , Manosa/análisis , Oligosacáridos/análisis , Oligosacáridos/metabolismo , Ratas
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