Engineered versions of CgtB (β-1,3 galactosyltransferase) enzymes, with enhanced enzymatic properties

A β-1,3-galactosyltransferase fusion polypeptide comprising

• i. a truncated CgtB polypeptide, wherein between 1 and 35 amino acids are removed from the C terminal end of the CgtB polypeptide, and
• ii. a maltose binding protein domain fused to the C-terminus of the CgtB polypeptide,
• wherein the β-1,3-galactosyltransferase polypeptide transfers a galactose moiety from a donor substrate to an acceptor substrate and wherein the truncated CgtB polypotide comprises an amino acid sequence with at least 90% identity to an amino acid sequence selected from the group consisting of SEQ ID NO:2, SEQ ID NO:4, SEQ ID NO:6, SEQ ID NO:8 and SEQ ID NO:
• 10.