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Sequential hydrolysis of the 20-O-beta-D-(1->6)-glucopyranosyl bond (leaving a single glucosyl residue at that position) followed by hydrolysis of the 3-O-beta-D-(1->2)-glucopyranosyl bond and the 3-O-beta-D-glucopyranosyl bond in protopanaxadiol-type ginsenosides
the enzyme hydrolyzes the 20-O-beta-D-(1->6)-glucoside and both glucosidic linkages at 3-C. The enzyme prefers the 20-C, beta-(1->6)-glucosidic bond to the 3-C, beta-(1->2)-glucosidic bond. Ginsenoside Rb1 is firstly converted to ginsenoside Rd, subsequently to ginsenoside F2, and finally to ginsenoside C-K after 24 h of incubation
the enzyme does not cleave the 20-C-beta-D-(6->1)-arabinopyranoside of ginsenoside Rb2, the 20-C-beta-D-(6->1)-xyloside of ginsenoside Rb3, the 20-O-beta-D-(6->1)-arabinofuranoide of ginsenoside Rc. The enzyme also hydrolyses 4-nitrophenyl-beta-D-glycosides, cellobiose, sophorose, methyl beta-glucopyranoside, hexyl beta-D-glucopyranoside, heptyl beta-D-glucopyranoside, decyl beta-D-glucopyranoside, dodecyl beta-D-glucopyranoside