Beta-1,4-galactosyltransferase 5 is an enzyme that in humans is encoded by the B4GALT5 gene. [5] [6] [7]
This gene is one of seven beta-1,4-galactosyltransferase (beta4GalT) genes. They encode type II membrane-bound glycoproteins that appear to have exclusive specificity for the donor substrate UDP-galactose; all transfer galactose in a beta1,4 linkage to similar acceptor sugars: GlcNAc, Glc, and Xyl. Each beta4GalT has a distinct function in the biosynthesis of different glycoconjugates and saccharide structures. As type II membrane proteins, they have an N-terminal hydrophobic signal sequence that directs the protein to the Golgi apparatus and which then remains uncleaved to function as a transmembrane anchor. By sequence similarity, the beta4GalTs form four groups: beta4GalT1 and beta4GalT2, beta4GalT3 and beta4GalT4, beta4GalT5 and beta4GalT6, and beta4GalT7. The function of the enzyme encoded by this gene is not clear. This gene was previously designated as B4GALT4 but was renamed to B4GALT5. In the literature it is also referred to as beta4GalT2. [7]
Beta-1,4-galactosyltransferase 1 is an enzyme that in humans is encoded by the B4GALT1 gene.
Beta-1,3-galactosyl-O-glycosyl-glycoprotein beta-1,6-N-acetylglucosaminyltransferase is an enzyme that in humans is encoded by the GCNT1 gene.
Beta-1,4-mannosyl-glycoprotein 4-beta-N-acetylglucosaminyltransferase is an enzyme that in humans is encoded by the MGAT3 gene.
Polypeptide N-acetylgalactosaminyltransferase 2 is an enzyme that in humans is encoded by the GALNT2 gene.
UDP-GalNAc:beta-1,3-N-acetylgalactosaminyltransferase 1 is an enzyme that in humans is encoded by the B3GALNT1 gene.
UDP-GlcNAc:betaGal beta-1,3-N-acetylglucosaminyltransferase 2 is an enzyme that in humans is encoded by the B3GNT2 gene.
UDP-GlcNAc:betaGal beta-1,3-N-acetylglucosaminyltransferase 3 is an enzyme that in humans is encoded by the B3GNT3 gene.
Beta-1,4-galactosyltransferase 7 also known as galactosyltransferase I is an enzyme that in humans is encoded by the B4GALT7 gene. Galactosyltransferase I catalyzes the synthesis of the glycosaminoglycan-protein linkage in proteoglycans. Proteoglycans in turn are structural components of the extracellular matrix that is found between cells in connective tissues.
Galactosylgalactosylxylosylprotein 3-beta-glucuronosyltransferase 3 is an enzyme that in humans is encoded by the B3GAT3 gene.
Beta-1,4 N-acetylgalactosaminyltransferase 1 is an enzyme that in humans is encoded by the B4GALNT1 gene.
Lactosylceramide 4-alpha-galactosyltransferase is an enzyme that in humans is encoded by the A4GALT gene.
Beta-1,4-galactosyltransferase 2 is an enzyme that in humans is encoded by the B4GALT2 gene.
Beta-1,3-galactosyltransferase 5 is an enzyme that in humans is encoded by the B3GALT5 gene.
UDP-N-acetylhexosamine pyrophosphorylase is an enzyme that in humans is encoded by the UAP1 gene.
Beta-1,4-galactosyltransferase 4 is an enzyme that in humans is encoded by the B4GALT4 gene.
Beta-1,4-galactosyltransferase 3 is an enzyme that in humans is encoded by the B4GALT3 gene.
Beta-1,3-galactosyltransferase 4 is an enzyme that in humans is encoded by the B3GALT4 gene.
Galactose-3-O-sulfotransferase 3 is an enzyme that in humans is encoded by the GAL3ST3 gene.
UDP-N-acetylglucosamine transferase subunit ALG14 homolog is a protein that in humans is encoded by the ALG14 gene.
UDP-N-acetylglucosamine transferase subunit ALG13 homolog, also known as asparagine-linked glycosylation 13 homolog, is an enzyme that in humans is encoded by the ALG13 gene.