Glycosyltransferase family A (GT-A) includes diverse families of glycosyl transferases with a common GT-A type structural fold. Glycosyltransferases (GTs) are enzymes that synthesize oligosaccharides, polysaccharides, and glycoconjugates by transferring the sugar moiety from an activated nucleotide-sugar donor to an acceptor molecule, which may be a growing oligosaccharide, a lipid, or a protein. Based on the stereochemistry of the donor and acceptor molecules, GTs are classified as either retaining or inverting enzymes. To date, all GT structures adopt one of two possible folds, termed GT-A fold and GT-B fold. This hierarchy includes diverse families of glycosyl transferases with a common GT-A type structural fold, which has two tightly associated beta/alpha/beta domains that tend to form a continuous central sheet of at least eight beta-strands. The majority of the proteins in this superfamily are Glycosyltransferase family 2 (GT-2) proteins. But it also includes families GT-43, GT-6, GT-8, GT13 and GT-7; which are evolutionarily related to GT-2 and share structure similarities.

WfgS and WfeV are involved in O-antigen biosynthesis. Escherichia coli WfgS and Shigella dysenteriae WfeV are glycosyltransferase 2 family enzymes involved in O-antigen biosynthesis. GT-2 enzymes have GT-A type structural fold, which has two tightly associated beta/alpha/beta domains that tend to form a continuous central sheet of at least eight beta-strands. These are enzymes that catalyze the transfer of sugar moieties from activated donor molecules to specific acceptor molecules, forming glycosidic bonds. Glycosyltransferases have been classified into more than 90 distinct sequence based families.

Glycosyl transferase family 2. Diverse family, transferring sugar from UDP-glucose, UDP-N-acetyl- galactosamine, GDP-mannose or CDP-abequose, to a range of substrates including cellulose, dolichol phosphate and teichoic acids.

CESA_like is the cellulose synthase superfamily. The cellulose synthase (CESA) superfamily includes a wide variety of glycosyltransferase family 2 enzymes that share the common characteristic of catalyzing the elongation of polysaccharide chains. The members include cellulose synthase catalytic subunit, chitin synthase, glucan biosynthesis protein and other families of CESA-like proteins. Cellulose synthase catalyzes the polymerization reaction of cellulose, an aggregate of unbranched polymers of beta-1,4-linked glucose residues in plants, most algae, some bacteria and fungi, and even some animals. In bacteria, algae and lower eukaryotes, there is a second unrelated type of cellulose synthase (Type II), which produces acylated cellulose, a derivative of cellulose. Chitin synthase catalyzes the incorporation of GlcNAc from substrate UDP-GlcNAc into chitin, which is a linear homopolymer of beta-(1,4)-linked GlcNAc residues and Glucan Biosynthesis protein catalyzes the elongation of beta-1,2 polyglucose chains of Glucan.

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

CgTstructure in hexamer [Streptococcus parasanguinis FW213],5HEA_B CgT structure in hexamer [Streptococcus parasanguinis FW213],5HEA_C CgT structure in hexamer [Streptococcus parasanguinis FW213],5HEC_A CgT structure in dimer [Streptococcus parasanguinis FW213],5HEC_B CgT structure in dimer [Streptococcus parasanguinis FW213]

Structureof the Wall Teichoic Acid Polymerase TagF [Staphylococcus epidermidis RP62A],3L7I_B Structure of the Wall Teichoic Acid Polymerase TagF [Staphylococcus epidermidis RP62A],3L7I_C Structure of the Wall Teichoic Acid Polymerase TagF [Staphylococcus epidermidis RP62A],3L7I_D Structure of the Wall Teichoic Acid Polymerase TagF [Staphylococcus epidermidis RP62A]

ChainA, Teichoic acid biosynthesis protein F [Staphylococcus epidermidis RP62A],3L7J_B Chain B, Teichoic acid biosynthesis protein F [Staphylococcus epidermidis RP62A],3L7J_C Chain C, Teichoic acid biosynthesis protein F [Staphylococcus epidermidis RP62A],3L7J_D Chain D, Teichoic acid biosynthesis protein F [Staphylococcus epidermidis RP62A],3L7K_A Chain A, Teichoic acid biosynthesis protein F [Staphylococcus epidermidis RP62A],3L7K_B Chain B, Teichoic acid biosynthesis protein F [Staphylococcus epidermidis RP62A],3L7K_C Chain C, Teichoic acid biosynthesis protein F [Staphylococcus epidermidis RP62A],3L7K_D Chain D, Teichoic acid biosynthesis protein F [Staphylococcus epidermidis RP62A],3L7L_A Chain A, Teichoic acid biosynthesis protein F [Staphylococcus epidermidis RP62A],3L7L_B Chain B, Teichoic acid biosynthesis protein F [Staphylococcus epidermidis RP62A],3L7L_C Chain C, Teichoic acid biosynthesis protein F [Staphylococcus epidermidis RP62A],3L7L_D Chain D, Teichoic acid biosynthesis protein F [Staphylococcus epidermidis RP62A]

ChainA, Teichoic acid biosynthesis protein F [Staphylococcus epidermidis RP62A],3L7M_B Chain B, Teichoic acid biosynthesis protein F [Staphylococcus epidermidis RP62A],3L7M_C Chain C, Teichoic acid biosynthesis protein F [Staphylococcus epidermidis RP62A],3L7M_D Chain D, Teichoic acid biosynthesis protein F [Staphylococcus epidermidis RP62A]

MannosyltransferasePcManGT from Pyrobaculum calidifontis [Pyrobaculum calidifontis JCM 11548],6YV8_B Mannosyltransferase PcManGT from Pyrobaculum calidifontis in complex with GDP and Mn2+ [Pyrobaculum calidifontis JCM 11548],6YV9_A Mannosyltransferase PcManGT from Pyrobaculum calidifontis in complex with GDP-Man and Mn2+ [Pyrobaculum calidifontis JCM 11548]

UDP-Glc:alpha-D-GlcNAc-diphosphoundecaprenol beta-1,3-glucosyltransferase WfaP OS=Escherichia coli OX=562 GN=wfaP PE=1 SV=1

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

Glycosyltransferase GlyA OS=Streptococcus pneumoniae serotype 4 (strain ATCC BAA-334 / TIGR4) OX=170187 GN=glyA PE=3 SV=1

Uncharacterized glycosyltransferase RF_0543 OS=Rickettsia felis (strain ATCC VR-1525 / URRWXCal2) OX=315456 GN=RF_0543 PE=3 SV=1

Uncharacterized glycosyltransferase YibD OS=Escherichia coli (strain K12) OX=83333 GN=yibD PE=3 SV=2