EC 188.8.131.52 Enzyme
ginsenosidase type II (erroneous)
Glycosidases, i.e. enzymes that hydrolyse O- and S-glycosyl compounds
protopanaxadiol-type ginsenoside 20-beta-D-glucohydrolase
a protopanaxadiol-type ginsenoside with two glycosyl residues at position 20 + H2O = a protopanaxadiol-type ginsenoside with a single glucosyl residue at position 20 + a monosaccharide
protopanaxadiol-type ginsenoside with two glycosyl residues at position 20;
protopanaxadiol-type ginsenoside with a single glucosyl residue at position 20;
The 20-O-multi-glycoside ginsenosidase catalyses the hydrolysis of the 20-O-alpha-(1->6)-glycosidic bond and the 20-O-beta-(1->6)-glycosidic bond of protopanaxadiol-type ginsenosides. The enzyme usually leaves a single glucosyl residue attached at position 20, although it can cleave the remaining glucosyl residue with a lower efficiency. Starting with a ginsenoside that is glycosylated at positions 3 and 20, such as ginsenosides Rb1, Rb2, Rb3 and Rc, the most common product is ginsenoside Rd, with a low amount of ginsenoside Rg3 also formed.
EC 184.108.40.206 created 2014
Yu, H., Liu, Q., Zhang, C., Lu, M., Fu, Y., Im, W.-T., Lee, S.-T. and Jin, F.
A new ginsenosidase from Aspergillus strain hydrolyzing 20-O-multi-glycoside of PPD ginsenoside.
Process Biochem. 44 (2009) 772-775.
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