Galactosyltransferase

Galactosyltransferase is a type of glycosyltransferase which catalyzes the transfer of galactose.

The biosynthesis of disaccharides, oligosaccharides and polysaccharides involves the action of hundreds of different glycosyltransferases.

These enzymes catalyse the transfer of sugar moieties from activated donor molecules to specific acceptor molecules, forming glycosidic bonds.

A classification of glycosyltransferases using nucleotide diphospho-sugar, nucleotide monophospho-sugar and sugar phosphates (EC 2.4.1.-) and related proteins into distinct sequence based families has been described.

[1] This classification is available on the CAZy (Carbohydrate-Active EnZymes) web site.