Printer friendly

What does B-GT stand for?

B-GT stands for 4-beta-D-galactosyltransferase


This definition appears rarely

Samples in periodicals archive:

This enzyme belongs to the family of glycosyltransferases, specifically the hexosyltransferases. The systematic name of this enzyme class is UDP-galactose:O-beta-D-xylosylprotein 4-beta-D-galactosyltransferase. Other names in common use include UDP-D-galactose:D-xylose galactosyltransferase, UDP-D-galactose:xylose galactosyltransferase, galactosyltransferase I, and uridine diphosphogalactose-xylose galactosyltransferase.
Previously we have shown that the gene encoding murine beta 1,4-galactosyltransferase (beta 1,4-GT; UDPgalactose:N-acetyl-D-glucosaminyl-glycopeptide 4-beta-D-galactosyltransferase, EC 2. 4. 1. 38) is unusual in that it specifies two sets of mRNAs of about 3. 9 and 4. 1 kilobases (kb).
Chronic injection of the beta-adrenergic receptor agonist isoproterenol causes a 6- to 10-fold increase in the specific activity of the Golgi membrane marker enzyme UDP-galactose:D-glucose 4-beta-D-galactosyltransferase (EC 2. 4. 1. 22) in rat parotid glands. Using a combination of size exclusion chromatography and affinity chromatography on alpha-lactalbumin-agarose, the Triton X-100-solubilized enzyme was purified to homogeneity from treated and control animals.
UDP-galactose:O-beta-D-xylosylprotein 4-beta-D-galactosyltransferase.
In enzymology, a xylosylprotein 4-beta-galactosyltransferase is an enzyme that catalyzes the chemical reaction UDP-galactose + O-beta-D-xylosylprotein UDP + 4-beta-D-galactosyl-O-beta-D-xylosylprotein Thus, the two substrates of this enzyme are UDP-galactose and O-beta-D-xylosylprotein, whereas its two products are UDP and 4-beta-D-galactosyl-O-beta-D-xylosylprotein. This enzyme belongs to the family of glycosyltransferases, specifically the hexosyltransferases.
55. Product characterization and substrate specificity studies employing chromatography, enzymatic digestion with various glycosidases, and use of a variety of glycosphingolipid substrates revealed that the major product synthesized by this enzyme was Cer1-1 beta Glc4-1Gal, and Cer1-1 beta Glc was the preferred substrate. Digestion of the 60- and 58-kDa proteins with Staphylococcus aureus (V-8) protease revealed at least six peptides having identical electrophoretic migration. This finding suggests that the two proteins may be related to each other. Western immunoblot assays revealed that the antibody against UDP-galactose:GlcCer, beta 1-4 galactosyltransferase.
Protein also known as: UDP-galactose:beta-N-acetylglucosamine beta-1,4-galactosyltransferase.