Uracil DNA glycosylase family 6, includes hypoxanthine-DNA glycosylase and similar proteins. Uracil DNA glycosylase family 6 hypoxanthine-DNA glycosylase (HDG) lacks any detectable UDG activity; it excises hypoxanthine, a deamination product of adenine, from double-stranded DNA. Uracil-DNA glycosylase (UDGs) initiates repair of uracils in DNA. Uracil in DNA can arise as a result of misincorporation of dUMP residues by DNA polymerase or via deamination of cytosine. Uracil in DNA mispaired with guanine is one of the major pro-mutagenic events, causing G:C->A:T mutations. Thus, UDG is an essential enzyme for maintaining the integrity of genetic information. UDGs have been classified into various families on the basis of their substrate specificity, conserved motifs, and structural similarities. Although these families demonstrate different substrate specificities, often the function of one enzyme can be complemented by the other.

hypoxanthine-DNA glycosylase. Members of this protein family represent family 6 of the uracil-DNA glycosylase superfamily, where the five previously described families all act as uracil-DNA glycosylase (EC 3.2.2.27) per se. This family, instead, acts as a hypoxanthine-DNA glycosylase, where hypoxanthine results from deamination of adenine. Activity was shown directly for members from Methanosarcina barkeri and Methanosarcina acetivorans.

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.

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.

Crystalstructure of a putative glycosyltransferase from Bacteroides fragilis [Bacteroides fragilis NCTC 9343],3BCV_B Crystal structure of a putative glycosyltransferase from Bacteroides fragilis [Bacteroides fragilis NCTC 9343]

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]

Crystalstructure of chondroitin polymerase from Escherichia coli strain K4 (K4CP) complexed with UDP-GalNAc and UDP [Escherichia coli],2Z87_B Crystal structure of chondroitin polymerase from Escherichia coli strain K4 (K4CP) complexed with UDP-GalNAc and UDP [Escherichia coli]

Crystalstructure of chondroitin polymerase from Escherichia coli strain K4 (K4CP) complexed with UDP-GlcUA and UDP [Escherichia coli],2Z86_B Crystal structure of chondroitin polymerase from Escherichia coli strain K4 (K4CP) complexed with UDP-GlcUA and UDP [Escherichia coli],2Z86_C Crystal structure of chondroitin polymerase from Escherichia coli strain K4 (K4CP) complexed with UDP-GlcUA and UDP [Escherichia coli],2Z86_D Crystal structure of chondroitin polymerase from Escherichia coli strain K4 (K4CP) complexed with UDP-GlcUA and UDP [Escherichia coli]

ChainA, Probable ss-1,3-N-acetylglucosaminyltransferase [Staphylococcus aureus subsp. aureus N315],6H1J_B Chain B, Probable ss-1,3-N-acetylglucosaminyltransferase [Staphylococcus aureus subsp. aureus N315],6H1J_C Chain C, Probable ss-1,3-N-acetylglucosaminyltransferase [Staphylococcus aureus subsp. aureus N315],6H21_A Chain A, Probable ss-1,3-N-acetylglucosaminyltransferase [Staphylococcus aureus subsp. aureus N315],6H21_B Chain B, Probable ss-1,3-N-acetylglucosaminyltransferase [Staphylococcus aureus subsp. aureus N315],6H21_C Chain C, Probable ss-1,3-N-acetylglucosaminyltransferase [Staphylococcus aureus subsp. aureus N315],6H2N_A Chain A, Probable ss-1,3-N-acetylglucosaminyltransferase [Staphylococcus aureus subsp. aureus N315],6H2N_B Chain B, Probable ss-1,3-N-acetylglucosaminyltransferase [Staphylococcus aureus subsp. aureus N315],6H2N_C Chain C, Probable ss-1,3-N-acetylglucosaminyltransferase [Staphylococcus aureus subsp. aureus N315],6H4F_A Chain A, Probable ss-1,3-N-acetylglucosaminyltransferase [Staphylococcus aureus subsp. aureus N315],6H4F_B Chain B, Probable ss-1,3-N-acetylglucosaminyltransferase [Staphylococcus aureus subsp. aureus N315],6H4F_C Chain C, Probable ss-1,3-N-acetylglucosaminyltransferase [Staphylococcus aureus subsp. aureus N315],6H4F_D Chain D, Probable ss-1,3-N-acetylglucosaminyltransferase [Staphylococcus aureus subsp. aureus N315],6H4F_E Chain E, Probable ss-1,3-N-acetylglucosaminyltransferase [Staphylococcus aureus subsp. aureus N315],6H4F_F Chain F, Probable ss-1,3-N-acetylglucosaminyltransferase [Staphylococcus aureus subsp. aureus N315],6H4F_G Chain G, Probable ss-1,3-N-acetylglucosaminyltransferase [Staphylococcus aureus subsp. aureus N315],6H4F_H Chain H, Probable ss-1,3-N-acetylglucosaminyltransferase [Staphylococcus aureus subsp. aureus N315],6H4F_I Chain I, Probable ss-1,3-N-acetylglucosaminyltransferase [Staphylococcus aureus subsp. aureus N315],6H4F_O Chain O, Probable ss-1,3-N-acetylglucosaminyltransferase [Staphylococcus aureus subsp. aureus N315],6H4F_P Chain P, Probable ss-1,3-N-acetylglucosaminyltransferase [Staphylococcus aureus subsp. aureus N315],6H4F_Q Chain Q, Probable ss-1,3-N-acetylglucosaminyltransferase [Staphylococcus aureus subsp. aureus N315],6H4M_A Chain A, Probable ss-1,3-N-acetylglucosaminyltransferase [Staphylococcus aureus subsp. aureus N315],6H4M_B Chain B, Probable ss-1,3-N-acetylglucosaminyltransferase [Staphylococcus aureus subsp. aureus N315],6H4M_C Chain C, Probable ss-1,3-N-acetylglucosaminyltransferase [Staphylococcus aureus subsp. aureus N315],6H4M_D Chain D, Probable ss-1,3-N-acetylglucosaminyltransferase [Staphylococcus aureus subsp. aureus N315],6H4M_E Chain E, Probable ss-1,3-N-acetylglucosaminyltransferase [Staphylococcus aureus subsp. aureus N315],6H4M_F Chain F, Probable ss-1,3-N-acetylglucosaminyltransferase [Staphylococcus aureus subsp. aureus N315],6H4M_G Chain G, Probable ss-1,3-N-acetylglucosaminyltransferase [Staphylococcus aureus subsp. aureus N315],6H4M_H Chain H, Probable ss-1,3-N-acetylglucosaminyltransferase [Staphylococcus aureus subsp. aureus N315],6H4M_I Chain I, Probable ss-1,3-N-acetylglucosaminyltransferase [Staphylococcus aureus subsp. aureus N315],6H4M_O Chain O, Probable ss-1,3-N-acetylglucosaminyltransferase [Staphylococcus aureus subsp. aureus N315],6H4M_P Chain P, Probable ss-1,3-N-acetylglucosaminyltransferase [Staphylococcus aureus subsp. aureus N315],6H4M_Q Chain Q, Probable ss-1,3-N-acetylglucosaminyltransferase [Staphylococcus aureus subsp. aureus N315],6HNQ_A Chain A, Probable ss-1,3-N-acetylglucosaminyltransferase [Staphylococcus aureus subsp. aureus N315],6HNQ_B Chain B, Probable ss-1,3-N-acetylglucosaminyltransferase [Staphylococcus aureus subsp. aureus N315],6HNQ_C Chain C, Probable ss-1,3-N-acetylglucosaminyltransferase [Staphylococcus aureus subsp. aureus N315],6HNQ_D Chain D, Probable ss-1,3-N-acetylglucosaminyltransferase [Staphylococcus aureus subsp. aureus N315],6HNQ_E Chain E, Probable ss-1,3-N-acetylglucosaminyltransferase [Staphylococcus aureus subsp. aureus N315],6HNQ_F Chain F, Probable ss-1,3-N-acetylglucosaminyltransferase [Staphylococcus aureus subsp. aureus N315],6HNQ_G Chain G, Probable ss-1,3-N-acetylglucosaminyltransferase [Staphylococcus aureus subsp. aureus N315],6HNQ_H Chain H, Probable ss-1,3-N-acetylglucosaminyltransferase [Staphylococcus aureus subsp. aureus N315],6HNQ_I Chain I, Probable ss-1,3-N-acetylglucosaminyltransferase [Staphylococcus aureus subsp. aureus N315],6HNQ_O Chain O, Probable ss-1,3-N-acetylglucosaminyltransferase [Staphylococcus aureus subsp. aureus N315],6HNQ_P Chain P, Probable ss-1,3-N-acetylglucosaminyltransferase [Staphylococcus aureus subsp. aureus N315],6HNQ_Q Chain Q, Probable ss-1,3-N-acetylglucosaminyltransferase [Staphylococcus aureus subsp. aureus N315]

Putative glycosyltransferase EpsH OS=Bacillus subtilis (strain 168) OX=224308 GN=epsH PE=2 SV=1

Uncharacterized glycosyltransferase EpsJ OS=Bacillus subtilis (strain 168) OX=224308 GN=epsJ PE=2 SV=1

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

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

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