%0 Journal Article %T PURIFICATION AND ANALYSIS OF CARBOHYDRATE CLUSTER FROM ERYTHROPOIETIN RECOMBINANT EXPRESSION RESULT ON THE LEAVEN SYSTEM OF Pichia pastoris %A Andri Wardiana %A Adi Santoso %J Makara Seri Sains %D 2011 %I Universitas Indonesia %X For clinical purposes, pure protein and identification of carbohydrate structure from erythropoietin recombinant are needed. Purification was done with His-Trap affinity chromatography method and continued with gel filtration chromatography column to get purer protein. The carbohydrate cluster from the resulting pure protein then can be recognized by using N- and O-glycosidase and can be compared to EPO recombinant from mammal cells. The result showed similarity on the declining trend of the protein molecule¡¯s weight, which could be seen using the Western blot method. Pure oligosaccharide was hydrolyzed to produce various monosaccharide through incubation with HCl 4 N in 100 oC temperature for 6 hours and the result was applied on high intensity liquid chromatography incubator to learn the composition of its monosaccharide. %K EPO %K gel filtration chromatography %K His-Trap affinity chromatography %K monosaccharide %U http://journal.ui.ac.id/science/article/viewFile/888/847