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Most glycosyltransferase enzymes form one of two folds: GT-A or GT-B. Glycosyltransferases (GTFs, Gtfs) are enzymes that establish natural glycosidic linkages.They catalyze the transfer of saccharide moieties from an activated nucleotide sugar (also known as the "glycosyl donor") to a nucleophilic glycosyl acceptor molecule, the nucleophile of which can be oxygen- carbon-, nitrogen-, or sulfur ...
Glycosyltransferase is a subcategory of EC 2.4 transferases that is involved in biosynthesis of disaccharides and polysaccharides through transfer of monosaccharides to other molecules. [40] An example of a prominent glycosyltransferase is lactose synthase which is a dimer possessing two protein subunits .
Glucosyltransferases are a type of glycosyltransferase that enable the transfer of glucose. [1] Examples include: glycogen synthase; glycogen phosphorylase; They are categorized under EC number 2.4.1.
N-glycosyltransferase is an enzyme in prokaryotes which transfers individual hexoses onto asparagine sidechains in substrate proteins, using a nucleotide-bound intermediary, within the cytoplasm. They are distinct from regular N -glycosylating enzymes , which are oligosaccharyltransferases that transfer pre-assembled oligosaccharides .
To act as glycosyl donors, those monosaccharides should exist in a highly energetic form. This occurs as a result of a reaction between nucleoside triphosphate (NTP) and glycosyl monophosphate (phosphate at anomeric carbon).
Uridine 5'-diphospho-glucuronosyltransferase (UDP-glucuronosyltransferase, UGT) is a microsomal glycosyltransferase (EC 2.4.1.17) that catalyzes the transfer of the glucuronic acid component of UDP-glucuronic acid to a small hydrophobic molecule. This is a glucuronidation reaction. [2] [3] Alternative names:
Beta-1,3-galactosyl-O-glycosyl-glycoprotein beta-1,6-N-acetylglucosaminyltransferase (EC 2.4.1.102, O-glycosyl-oligosaccharide-glycoprotein N-acetylglucosaminyltransferase I, beta6-N-acetylglucosaminyltransferase, uridine diphosphoacetylglucosamine-mucin beta-(1->6)-acetylglucosaminyltransferase, core 2 acetylglucosaminyltransferase, core 6-beta-GlcNAc-transferase A, UDP-N-acetyl-D-glucosamine ...
Histo-blood group ABO system transferase is an enzyme with glycosyltransferase activity, which is encoded by the ABO gene in humans. [5] [6] It is ubiquitously expressed in many tissues and cell types. [7] ABO determines the ABO blood group of an individual by modifying the oligosaccharides on cell surface glycoproteins. Variations in the ...