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The initial plasma clearance and organ distribution of alpha 1-acid glycoprotein and alpha 2-macroglobulin carrying different types of oligosaccharide, side chains was studied in rats. The differently glycosylated proteins were synthesized by rat hepatocytes in culture in the presence of tunicamycin (unglycosylated form), swainsonine (hybrid type), or(More)
The biosynthesis and secretion of human interleukin-6 (IL-6) was studied in monocyte cultures stimulated with endotoxin. After labeling with [35S]methionine and immunoprecipitation with a specific antiserum one major (24 kDa) and four minor (27.5, 23.3, 22.5 and 21.8 kDa) molecular mass forms of IL-6 could be found in the cells and media. Incubation of(More)
The biosynthesis and secretion of M-type and Z-type alpha 1-antitrypsin was studied in human monocytes. In monocytes of PiMM individuals alpha 1-antitrypsin represented 0.08% of the newly synthesized proteins and 0.44% of the secreted proteins. Two molecular forms of alpha 1-antitrypsin could be identified: a 51-kDa intracellular form, susceptible to(More)
The effect of D-galactosamine on protein N-glycosylation was studied in rat hepatocyte primary cultures for alpha 1-antitrypsin (three complex type oligosaccharide chains) and alpha 1-acid glycoprotein (six complex type oligosaccharide chains). D-Galactosamine at a concentration of 4 mM inhibited partially de novo N-glycosylation leading to the formation of(More)
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