amylovoran biosynthesis glycosyltransferase AmsD and similar proteins. This family is most closely related to the GT4 family of glycosyltransferases. AmSD in Erwinia amylovora has been shown to be involved in the biosynthesis of amylovoran, the acidic exopolysaccharide acting as a virulence factor. This enzyme may be responsible for the formation of galactose alpha-1,6 linkages in amylovoran.

phosphatidyl-myo-inositol mannosyltransferase. This family is most closely related to the GT4 family of glycosyltransferases and named after PimA in Propionibacterium freudenreichii, which is involved in the biosynthesis of phosphatidyl-myo-inositol mannosides (PIM) which are early precursors in the biosynthesis of lipomannans (LM) and lipoarabinomannans (LAM), and catalyzes the addition of a mannosyl residue from GDP-D-mannose (GDP-Man) to the position 2 of the carrier lipid phosphatidyl-myo-inositol (PI) to generate a phosphatidyl-myo-inositol bearing an alpha-1,2-linked mannose residue (PIM1). Glycosyltransferases catalyze the transfer of sugar moieties from activated donor molecules to specific acceptor molecules, forming glycosidic bonds. The acceptor molecule can be a lipid, a protein, a heterocyclic compound, or another carbohydrate residue. This group of glycosyltransferases is most closely related to the previously defined glycosyltransferase family 1 (GT1). The members of this family may transfer UDP, ADP, GDP, or CMP linked sugars. The diverse enzymatic activities among members of this family reflect a wide range of biological functions. The protein structure available for this family has the GTB topology, one of the two protein topologies observed for nucleotide-sugar-dependent glycosyltransferases. GTB proteins have distinct N- and C- terminal domains each containing a typical Rossmann fold. The two domains have high structural homology despite minimal sequence homology. The large cleft that separates the two domains includes the catalytic center and permits a high degree of flexibility. The members of this family are found mainly in certain bacteria and archaea.

family 4 and family 28 glycosyltransferases similar to Klebsiella WabH. This family is most closely related to the GT1 family of glycosyltransferases. WabH in Klebsiella pneumoniae has been shown to transfer a GlcNAc residue from UDP-GlcNAc onto the acceptor GalUA residue in the cellular outer core.

Glycosyltransferase involved in cell wall bisynthesis [Cell wall/membrane/envelope biogenesis].

Glycosyl transferases group 1. Mutations in this domain of PIGA lead to disease (Paroxysmal Nocturnal haemoglobinuria). Members of this family transfer activated sugars to a variety of substrates, including glycogen, Fructose-6-phosphate and lipopolysaccharides. Members of this family transfer UDP, ADP, GDP or CMP linked sugars. The eukaryotic glycogen synthases may be distant members of this family.

ChainA, Glycosyl transferase, group 1 family protein [Staphylococcus aureus subsp. aureus USA300],7EC1_B Chain B, Glycosyl transferase, group 1 family protein [Staphylococcus aureus subsp. aureus USA300],7EC4_A Chain A, Glycosyl transferase, group 1 family protein [Staphylococcus aureus subsp. aureus USA300],7EC4_C Chain C, Glycosyl transferase, group 1 family protein [Staphylococcus aureus subsp. aureus USA300],7EC6_A Chain A, Glycosyl transferase, group 1 family protein [Staphylococcus aureus subsp. aureus USA300],7EC6_C Chain C, Glycosyl transferase, group 1 family protein [Staphylococcus aureus subsp. aureus USA300],7VFK_A Chain A, Glycosyl transferase, group 1 family protein [Staphylococcus aureus subsp. aureus USA300],7VFK_B Chain B, Glycosyl transferase, group 1 family protein [Staphylococcus aureus subsp. aureus USA300],7VFM_A Chain A, Glycosyl transferase, group 1 family protein [Staphylococcus aureus subsp. aureus USA300],7VFM_C Chain C, Glycosyl transferase, group 1 family protein [Staphylococcus aureus subsp. aureus USA300],7VFN_A Chain A, Glycosyl transferase, group 1 family protein [Staphylococcus aureus subsp. aureus USA300],7VFN_C Chain C, Glycosyl transferase, group 1 family protein [Staphylococcus aureus subsp. aureus USA300]

ChainA, Glycosyl transferase, group 1 family protein [Staphylococcus aureus subsp. aureus USA300],7EC3_C Chain C, Glycosyl transferase, group 1 family protein [Staphylococcus aureus subsp. aureus USA300],7VFL_A Chain A, Glycosyl transferase, group 1 family protein [Staphylococcus aureus subsp. aureus USA300],7VFL_C Chain C, Glycosyl transferase, group 1 family protein [Staphylococcus aureus subsp. aureus USA300]

ChainA, Glycosyl transferase, group 1 family protein [Staphylococcus aureus subsp. aureus USA300],7EC7_B Chain B, Glycosyl transferase, group 1 family protein [Staphylococcus aureus subsp. aureus USA300],7VFO_A Chain A, Glycosyl transferase, group 1 family protein [Staphylococcus aureus subsp. aureus USA300],7VFO_B Chain B, Glycosyl transferase, group 1 family protein [Staphylococcus aureus subsp. aureus USA300]

ChainA, Glycosyl transferase, group 1 family protein [Staphylococcus aureus subsp. aureus USA300],7EC2_B Chain B, Glycosyl transferase, group 1 family protein [Staphylococcus aureus subsp. aureus USA300]