UDP-glucose:sterol

Ullman, P, Bouvier-Nave, P. and Benveniste, P. (1987) Regulation by phospholipids and kinetic studies of plant membrane-bound UDP-glucose sterol (3-D-glucosyltransferase. Plant Physiol, 85,51-5. 

Ury, A., Benveniste, P. and Bouvier-Nave, P. (1989) Phospholipid-dependence of plant UDP-glucose-sterol-p-D-glucosyltransferase. IV. Reconstitution into small unilamellar vesicles. Plant Physiol, 91, 567-73. 

Yoshikawa, T. and Fumya, T. (1979) Purification and properties of sterol UDP-glucose glucosyltransferase in cell culture of Digitalis purpurea. Phytochemistry, 18, 239-42. 

Sterol esters in rat livers may sometimes retain a 4a-methyl group.In plants, sterol glycosides are formed via UDP-galactose or UDP-glucose. ... 

Sterol glycosides are widely distributed in plants and are frequently accompanied by their 6-0-acyl derivatives. As might be expected, preparations have been obtained which glucosylate sterols with UDP-glucose as sugar donor ... 

Many researchers have used particulate preparations to study the biosynthesis of ASG. In some cases the centrifugal force used was 20,000-25,000 g and in others 100,000 g. It should be noted that such membrane preparations contain endogenous sterol acceptors (of glucose from UDP-Glc) and acyl donors. It is conceivable that other fiactions may have enzymatic activity but no endogenous substrate. Particulate preparations catalyze the formation of SG and ASG and are not stimulated by further addition of substrate. 

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