putative colanic acid biosynthesis glycosyl transferase WcaC and similar proteins. This family is most closely related to the GT4 family of glycosyltransferases. Escherichia coli WcaC has been predicted to function in colanic acid biosynthesis. WcfI in Bacteroides fragilis has been shown to be involved in the capsular polysaccharide biosynthesis.

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.

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

colanic acid biosynthesis glycosyltransferase WcaC.

glycosyltransferases MtfB, WbpX, and similar proteins. This family is most closely related to the GT4 family of glycosyltransferases. MtfB (mannosyltransferase B) in E. coli has been shown to direct the growth of the O9-specific polysaccharide chain. It transfers two mannoses into the position 3 of the previously synthesized polysaccharide.

Structureof Mycobacterium smegmatis alpha-maltose-1-phosphate synthase GlgM [Mycolicibacterium smegmatis MC2 155],6TVP_B Structure of Mycobacterium smegmatis alpha-maltose-1-phosphate synthase GlgM [Mycolicibacterium smegmatis MC2 155]

Crystalstructure of Corynebacterium glutamicum PimB' in complex with GDP-Man (triclinic crystal form) [Corynebacterium glutamicum],3OKA_B Crystal structure of Corynebacterium glutamicum PimB' in complex with GDP-Man (triclinic crystal form) [Corynebacterium glutamicum]

Crystalstructure of Corynebacterium glutamicum PimB' bound to GDP (orthorhombic crystal form) [Corynebacterium glutamicum],3OKP_A Crystal structure of Corynebacterium glutamicum PimB' bound to GDP-Man (orthorhombic crystal form) [Corynebacterium glutamicum]

Sucrose-phosphatesynthase (tll1590) from Thermosynechococcus elongatus [Thermosynechococcus vestitus],6KIH_B Sucrose-phosphate synthase (tll1590) from Thermosynechococcus elongatus [Thermosynechococcus vestitus],6KIH_C Sucrose-phosphate synthase (tll1590) from Thermosynechococcus elongatus [Thermosynechococcus vestitus],6KIH_D Sucrose-phosphate synthase (tll1590) from Thermosynechococcus elongatus [Thermosynechococcus vestitus],6KIH_E Sucrose-phosphate synthase (tll1590) from Thermosynechococcus elongatus [Thermosynechococcus vestitus],6KIH_F Sucrose-phosphate synthase (tll1590) from Thermosynechococcus elongatus [Thermosynechococcus vestitus],6KIH_G Sucrose-phosphate synthase (tll1590) from Thermosynechococcus elongatus [Thermosynechococcus vestitus],6KIH_H Sucrose-phosphate synthase (tll1590) from Thermosynechococcus elongatus [Thermosynechococcus vestitus],6KIH_I Sucrose-phosphate synthase (tll1590) from Thermosynechococcus elongatus [Thermosynechococcus vestitus],6KIH_J Sucrose-phosphate synthase (tll1590) from Thermosynechococcus elongatus [Thermosynechococcus vestitus],6KIH_K Sucrose-phosphate synthase (tll1590) from Thermosynechococcus elongatus [Thermosynechococcus vestitus],6KIH_L Sucrose-phosphate synthase (tll1590) from Thermosynechococcus elongatus [Thermosynechococcus vestitus]

Putative colanic acid biosynthesis glycosyl transferase WcaC OS=Escherichia coli (strain K12) OX=83333 GN=wcaC PE=4 SV=2

Low-salt glycan biosynthesis hexosyltransferase Agl9 OS=Haloferax volcanii (strain ATCC 29605 / DSM 3757 / JCM 8879 / NBRC 14742 / NCIMB 2012 / VKM B-1768 / DS2) OX=309800 GN=agl9 PE=3 SV=1

D-inositol 3-phosphate glycosyltransferase OS=Corynebacterium jeikeium (strain K411) OX=306537 GN=mshA PE=3 SV=1

Alpha-maltose-1-phosphate synthase OS=Mycolicibacterium smegmatis (strain ATCC 700084 / mc(2)155) OX=246196 GN=glgM PE=1 SV=1

Alpha-galactosylglucosyldiacylglycerol synthase OS=Streptococcus pneumoniae (strain ATCC BAA-255 / R6) OX=171101 GN=cpoA PE=1 SV=1