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.

Shigella dysenteriae WbnK and similar proteins. This family is most closely related to the GT4 family of glycosyltransferases. WbnK in Shigella dysenteriae has been shown to be involved in the type 7 O-antigen biosynthesis.

Vibrio cholerae WavL and similar sequences. This family is most closely related to the GT4 family of glycosyltransferases. WavL in Vibrio cholerae has been shown to be involved in the biosynthesis of the lipopolysaccharide core.

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.

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.

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 a Glycosyltransferase from Leptospira borgpetersenii serovar Hardjo-bovis (strain JB197) [Leptospira borgpetersenii serovar Hardjo-bovis str. JB197],6P61_B Structure of a Glycosyltransferase from Leptospira borgpetersenii serovar Hardjo-bovis (strain JB197) [Leptospira borgpetersenii serovar Hardjo-bovis str. JB197],6P61_C Structure of a Glycosyltransferase from Leptospira borgpetersenii serovar Hardjo-bovis (strain JB197) [Leptospira borgpetersenii serovar Hardjo-bovis str. JB197],6P61_D Structure of a Glycosyltransferase from Leptospira borgpetersenii serovar Hardjo-bovis (strain JB197) [Leptospira borgpetersenii serovar Hardjo-bovis str. JB197]

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]

Hyaluronan synthase OS=Pasteurella multocida OX=747 GN=hyaD PE=1 SV=2

Chondroitin synthase OS=Pasteurella multocida (strain Pm70) OX=272843 GN=fcbD PE=3 SV=1

Putative teichuronic acid biosynthesis glycosyltransferase TuaG OS=Bacillus subtilis (strain 168) OX=224308 GN=tuaG PE=2 SV=1

D-inositol 3-phosphate glycosyltransferase OS=Cellulomonas flavigena (strain ATCC 482 / DSM 20109 / BCRC 11376 / JCM 18109 / NBRC 3775 / NCIMB 8073 / NRS 134) OX=446466 GN=mshA PE=3 SV=1

Uncharacterized glycosyltransferase RBE_0706 OS=Rickettsia bellii (strain RML369-C) OX=336407 GN=RBE_0706 PE=3 SV=1