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Purification and characterization of UDP-glucuronate: baicalein 7- O-glucuronosyltransferase from Scutellaria baicalensis Georgi. cell suspension cultures

UDP-glucuronate: baicalein 7- O-glucuronosyltransferase (UBGAT) catalyzes the transfer of glucuronic acid from UDP-glucuronic acid to the 7-OH of baicalein. UBGAT was purified from cultured cells of Scutellaria baicalensis Georgi (Lamiaceae). It was purified 95-fold using various chromatography and...

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Published in:Phytochemistry (Oxford) 2000-03, Vol.53 (5), p.533-538
Main Authors: Nagashima, Shigeyuki, Hirotani, Masao, Yoshikawa, Takafumi
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description UDP-glucuronate: baicalein 7- O-glucuronosyltransferase (UBGAT) catalyzes the transfer of glucuronic acid from UDP-glucuronic acid to the 7-OH of baicalein. UBGAT was purified from cultured cells of Scutellaria baicalensis Georgi (Lamiaceae). It was purified 95-fold using various chromatography and chromatofocusing procedures to apparent homogeneity. The M r was estimated to be 110 kDa by gel filtration chromatography with a 52 kDa subunit by SDS-PAGE. The isoelectric point was pH 4.8. UBGAT was specific to UDP-glucuronic acid as a sugar donor and flavones with substitution ortho- to the 7-OH group such as baicalein (6-OH), scutellarein (6-OH) and wogonin (8-OMe).
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subjects Analytical, structural and metabolic biochemistry
Baicalein
Baicalin
Biological and medical sciences
Cell culture
Chromatography, Gel
Drugs, Chinese Herbal - chemistry
Electrophoresis, Polyacrylamide Gel
Enzymes
Enzymes and enzyme inhibitors
Flavanones
Flavonoids - chemistry
Fundamental and applied biological sciences. Psychology
Glucuronosyltransferase
Glucuronosyltransferase - chemistry
Glucuronosyltransferase - isolation & purification
Lamiaceae
Lamiaceae - chemistry
Metabolism
Plant physiology and development
Plant Proteins - chemistry
Plant Proteins - isolation & purification
Plant Roots - chemistry
Scutellaria baicalensis
Substrate Specificity
Transferases
Uridine Diphosphate Glucuronic Acid - chemistry
title Purification and characterization of UDP-glucuronate: baicalein 7- O-glucuronosyltransferase from Scutellaria baicalensis Georgi. cell suspension cultures
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