CMP-NeuAc_Synthase activates N-acetylneuraminic acid by adding CMP moiety. CMP-N-acetylneuraminic acid synthetase (CMP-NeuAc synthetase) or acylneuraminate cytidylyltransferase catalyzes the transfer the CMP moiety of CTP to the anomeric hydroxyl group of NeuAc in the presence of Mg++. It is the second to last step in the sialylation of the oligosaccharide component of glycoconjugates by providing the activated sugar-nucleotide cytidine 5'-monophosphate N-acetylneuraminic acid (CMP-Neu5Ac), the substrate for sialyltransferases. Eukaryotic CMP-NeuAc synthetases are predominantly located in the nucleus. The activated CMP-Neu5Ac diffuses from the nucleus into the cytoplasm.

Alpha-(1,3)-fucosyltransferase FucT N-terminal domain. This is the N-terminal domain of the alpha chain found in Helicobacter pylori Fucosyltransferase protein which is involved in the production of Lewis x trisaccharide, a major component of lipopolysaccharide. The N-terminal domain contains the catalyst base, Glu-95 which is equivalent to the Asp-100 of other members of the glycosyltransferases-B family. The domain contains the pocket where LacNAc binds. The domain is composed of 2-10 heptad repeats and a conserved N-terminal alpha-beta-alpha motif which has little sequence similarity to the conserved N-terminal motif in other glycosyltransferases.

Glycosyltransferase family 10 (fucosyltransferase) C-term. This is the C-terminal domain of a family of fucosyltransferases. This enzyme transfers fucose from GDP-Fucose to GlcNAc in an alpha1,3 linkage. This family is known as glycosyltransferase family 10. The C-terminal domain is the likely binding-region for ADP (manuscript in publication).

CMP-N-acetylneuraminic acid synthetase [Cell wall/membrane/envelope biogenesis].

Cytidylyltransferase. This family consists of two main Cytidylyltransferase activities: 1) 3-deoxy-manno-octulosonate cytidylyltransferase,, EC:2.7.7.38 catalyzing the reaction:- CTP + 3-deoxy-D-manno-octulosonate <=> diphosphate + CMP-3-deoxy-D-manno-octulosonate, 2) acylneuraminate cytidylyltransferase EC:2.7.7.43, catalyzing the reaction:- CTP + N-acylneuraminate <=> diphosphate + CMP-N-acylneuraminate. NeuAc cytydilyltransferase of Mannheimia haemolytica has been characterized describing kinetics and regulation by substrate charge, energetic charge and amino-sugar demand.

CrystalStructure of alpha1,3-Fucosyltransferase [Helicobacter pylori],2NZW_B Crystal Structure of alpha1,3-Fucosyltransferase [Helicobacter pylori],2NZW_C Crystal Structure of alpha1,3-Fucosyltransferase [Helicobacter pylori],2NZX_A Crystal Structure of alpha1,3-Fucosyltransferase with GDP [Helicobacter pylori],2NZX_B Crystal Structure of alpha1,3-Fucosyltransferase with GDP [Helicobacter pylori],2NZX_C Crystal Structure of alpha1,3-Fucosyltransferase with GDP [Helicobacter pylori],2NZY_A Crystal Structure of alpha1,3-Fucosyltransferase with GDP-fucose [Helicobacter pylori],2NZY_B Crystal Structure of alpha1,3-Fucosyltransferase with GDP-fucose [Helicobacter pylori],2NZY_C Crystal Structure of alpha1,3-Fucosyltransferase with GDP-fucose [Helicobacter pylori]

CrystalStructure of alpha1,3-Fucosyltransferase [Helicobacter pylori],5ZOI_B Crystal Structure of alpha1,3-Fucosyltransferase [Helicobacter pylori]

Alpha-(1,3)-fucosyltransferase FucT OS=Helicobacter pylori OX=210 GN=fucT PE=1 SV=1

Putative fucosyltransferase R654 OS=Acanthamoeba polyphaga mimivirus OX=212035 GN=MIMI_R654 PE=3 SV=1

CMP-N,N'-diacetyllegionaminic acid synthase OS=Legionella pneumophila subsp. pneumophila (strain Philadelphia 1 / ATCC 33152 / DSM 7513) OX=272624 GN=neuA PE=1 SV=1

Glycoprotein 3-alpha-L-fucosyltransferase A OS=Drosophila melanogaster OX=7227 GN=FucTA PE=1 SV=2

3-galactosyl-N-acetylglucosaminide 4-alpha-L-fucosyltransferase FUT3 OS=Bos taurus OX=9913 GN=FUT3 PE=2 SV=2