A4GalT_like proteins catalyze the addition of galactose or glucose residues to the lipooligosaccharide (LOS) or lipopolysaccharide (LPS) of the bacterial cell surface. The members of this family of glycosyltransferases catalyze the addition of galactose or glucose residues to the lipooligosaccharide (LOS) or lipopolysaccharide (LPS) of the bacterial cell surface. The enzymes exhibit broad substrate specificities. The known functions found in this family include: Alpha-1,4-galactosyltransferase, LOS-alpha-1,3-D-galactosyltransferase, UDP-glucose:(galactosyl) LPS alpha1,2-glucosyltransferase, UDP-galactose: (glucosyl) LPS alpha1,2-galactosyltransferase, and UDP-glucose:(glucosyl) LPS alpha1,2-glucosyltransferase. Alpha-1,4-galactosyltransferase from N. meningitidis adds an alpha-galactose from UDP-Gal (the donor) to a terminal lactose (the acceptor) of the LOS structure of outer membrane. LOSs are virulence factors that enable the organism to evade the immune system of host cells. In E. coli, the three alpha-1,2-glycosyltransferases, that are involved in the synthesis of the outer core region of the LPS, are all members of this family. The three enzymes share 40 % of sequence identity, but have different sugar donor or acceptor specificities, representing the structural diversity of LPS.

Glycosyl transferase family 8. This family includes enzymes that transfer sugar residues to donor molecules. Members of this family are involved in lipopolysaccharide biosynthesis and glycogen synthesis. This family includes Lipopolysaccharide galactosyltransferase, lipopolysaccharide glucosyltransferase 1, and glycogenin glucosyltransferase.

Lipopolysaccharide biosynthesis protein, LPS:glycosyltransferase [Cell wall/membrane/envelope biogenesis].

Members of glycosyltransferase family 8 (GT-8) are involved in lipopolysaccharide biosynthesis and glycogen synthesis. Members of this family are involved in lipopolysaccharide biosynthesis and glycogen synthesis. GT-8 comprises enzymes with a number of known activities: lipopolysaccharide galactosyltransferase, lipopolysaccharide glucosyltransferase 1, glycogenin glucosyltransferase, and N-acetylglucosaminyltransferase. GT-8 enzymes contains a conserved DXD motif which is essential in the coordination of a catalytic divalent cation, most commonly Mn2+.

Probable galacturonosyltransferase

ChainA, WbbM protein [Klebsiella pneumoniae]

ChainA, alpha-1,4-galactosyl transferase [Neisseria meningitidis]

ChainA, GLYCOSYL TRANSFERASE [Neisseria meningitidis],1GA8_A Chain A, GALACTOSYL TRANSFERASE LGTC [Neisseria meningitidis]

Crystalstructure of the apo-form glycosyltransferase GlyE in Streptococcus pneumoniae TIGR4 [Streptococcus pneumoniae],5GVW_B Crystal structure of the apo-form glycosyltransferase GlyE in Streptococcus pneumoniae TIGR4 [Streptococcus pneumoniae],5GVW_C Crystal structure of the apo-form glycosyltransferase GlyE in Streptococcus pneumoniae TIGR4 [Streptococcus pneumoniae],5GVW_D Crystal structure of the apo-form glycosyltransferase GlyE in Streptococcus pneumoniae TIGR4 [Streptococcus pneumoniae]

Crystalstructure of the glycosyltransferase GlyE in Streptococcus pneumoniae TIGR4 [Streptococcus pneumoniae],5GVV_F Crystal structure of the glycosyltransferase GlyE in Streptococcus pneumoniae TIGR4 [Streptococcus pneumoniae]

Probable galacturonosyltransferase 13 OS=Arabidopsis thaliana OX=3702 GN=GAUT13 PE=2 SV=1

Probable galacturonosyltransferase 14 OS=Arabidopsis thaliana OX=3702 GN=GAUT14 PE=2 SV=1

Glycosyltransferase GlyE OS=Streptococcus pneumoniae serotype 4 (strain ATCC BAA-334 / TIGR4) OX=170187 GN=glyE PE=1 SV=1

Lipopolysaccharide 1,2-glucosyltransferase OS=Salmonella typhimurium (strain LT2 / SGSC1412 / ATCC 700720) OX=99287 GN=rfaJ PE=3 SV=4