Jw. Fang et al., Synthesis of alpha-Gal epitope derivatives with a galactosyltransferase-epimerase fusion enzyme, CARBOHY RES, 329(4), 2000, pp. 873-878
beta -Gal epitopes are carbohydrate structures bearing an alpha -D-Galp-(1
--> 3)-beta -D-Galp terminus and are the main cause of antibody-mediated hy
peracute rejection in xenotransplantation. Nine monosaccharides and ten dis
accharides were evaluated as substrates for a fusion protein, which contain
s both alpha-(1 --> 3)-galactosyltransferase and uridine-5'-diphosphogalact
ose 4-epimerase. Four disaccharide and six trisaccharide alpha -Gal epitope
derivatives were synthesized utilizing this novel fusion enzyme. (C) 2000
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