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VTC2 | GDP-L-galactose phosphorylase 1; Catalyzes a reaction of the Smirnoff-Wheeler pathway, the major route to ascorbate biosynthesis in plants. Acts as a phosphorylase rather than as a transferase. Uses preferentially GDP-L- galactose and GDP-D-glucose as substrates. Lower activity with GDP-L- fucose, very low activity with GDP-D-mannose, and no activity with UDP- D-glucose, UDP-D-galactose or ADP-D-glucose. Highly specific for inorganic phosphate as the guanylyl acceptor. (442 aa) | ||||
UGT89B1 | Flavonol 3-O-glucosyltransferase UGT89B1; Possesses quercetin 3-O-glucosyltransferase, 7-O- glucosyltransferase and 4'-O-glucosyltransferase activities in vitro. Also active in vitro on benzoates and benzoate derivatives. (473 aa) | ||||
VTC5 | GDP-L-galactose phosphorylase 2; Catalyzes a reaction of the Smirnoff-Wheeler pathway, the major route to ascorbate biosynthesis in plants. Acts as a phosphorylase rather than as a transferase. Uses preferentially GDP-L- galactose and GDP-D-glucose as substrates. Lower activity with GDP-L- fucose, very low activity with GDP-D-mannose, and no activity with UDP- D-glucose, UDP-D-galactose or ADP-D-glucose. Highly specific for inorganic phosphate as the guanylyl acceptor. (431 aa) | ||||
UGT88A1 | UDP-glycosyltransferase 88A1; Possesses low quercetin 3-O-glucosyltransferase, 7-O- glucosyltransferase, 3'-O-glucosyltransferase and 4'-O- glucosyltransferase activities in vitro; Belongs to the UDP-glycosyltransferase family. (462 aa) | ||||
UGT71B8 | UDP-glycosyltransferase 71B8; Possesses low quercetin 3-O-glucosyltransferase and 4'-O- glucosyltransferase activities in vitro. (480 aa) | ||||
UGT73C5 | UDP-glycosyltransferase 73C5; Specifically catalyzes 23-O-glucosylation of brassinosteroids, resulting probably in their inactivation. Also, involved in the O-glucosylation of trans-zeatin and dihydrozeatin. Active in vitro on cis-zeatin, dihydrozeatin-9-N-Glc, and olomoucine. Also involved in the detoxification of the Fusarium mycotoxin deoxynivalenol by the transfer of glucose from UDP-glucose to the hydroxyl group at C-3. Possesses low quercetin 7-O-glucosyltransferase and 4'-O-glucosyltransferase activities in vitro. Belongs to the UDP-glycosyltransferase family. (495 aa) | ||||
UGT73C6 | UDP-glycosyltransferase 73C6; Acts as a UDP-glucose:flavonol-3-O-glycoside-7-O- glucosyltransferase. 6- and 7-hydroxyflavone, but not 3- or 5- hydroxyflavone are accepted as substrates. Possesses low quercetin 3-O- glucosyltransferase, 7-O-glucosyltransferase and 4'-O- glucosyltransferase activities in vitro; Belongs to the UDP-glycosyltransferase family. (495 aa) |