Information on EC 2.4.1.152 - 4-galactosyl-N-acetylglucosaminide 3-alpha-L-fucosyltransferase and Organism(s) Helicobacter pylori and UniProt Accession O30511
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Normally acts on a glycoconjugate where R (see reaction) is a glycoprotein or glycolipid. This enzyme fucosylates on O-3 of an N-acetylglucosamine that carries a galactosyl group on O-4, unlike EC 2.4.1.65, 3-galactosyl-N-acetylglucosaminide 4-alpha-L-fucosyltransferase, which fucosylates on O-4 of an N-acetylglucosamine that carries a galactosyl group on O-3.
Normally acts on a glycoconjugate where R (see reaction) is a glycoprotein or glycolipid. This enzyme fucosylates on O-3 of an N-acetylglucosamine that carries a galactosyl group on O-4, unlike EC 2.4.1.65, 3-galactosyl-N-acetylglucosaminide 4-alpha-L-fucosyltransferase, which fucosylates on O-4 of an N-acetylglucosamine that carries a galactosyl group on O-3.
enzyme accepts fluorescein-isothiocyanate-labeled fucose and carboxyfluorescein-labeled fucose. Fluorescein-isothiocyanate-labeled NDP-beta-L-fucose is the best of these substrates
with full length 11639FucT, 28% of total enzyme activities is localized in the soluble fraction. For alpha-(1,3/1,4)-fucosyltransferase(1441), this increases to 45%, respectively, indicating that truncation of the C-terminal putative alpha-helices increases FucT solubility. Truncation mutant alpha-(1,3/1,4)-fucosyltransferase(10447) completely loses activity
with full length UA948FucT, 20% of total enzyme activities is localized in the soluble fraction. For UA948(1-428), this increases to 47%, respectively, indicating that truncation of the C-terminal putative alpha-helices increases FucT solubility. UA948(1-364), a mutant with the entire heptad repeat region removed, exhibits extremely low levels of enzyme activity. This indicates that the heptad repeat region is essential for enzyme activity. Construct alpha-(1,3/1,4)-fucosyltransferase(1-371) has little enzyme activity. alpha-(1,3/1,4)-fucosyltransferase(10-434) and alpha-(1,3/1,4)-fucosyltransferase(1-434) completely lose activity
the C-terminus of FutB is composed of 7 heptad repeats, construction of truncated forms, with C-terminal deletions of 25, 43, 57, and 78 residues. Upon expression in Escherichia coli, the truncated proteins show enhanced expression levels. Cells expressing the truncation variant lacking 43 amino acids produce 4.7 times more 3-fucosyllactose compared to wild-type. Deletion of half the membrane-anchoring region in the variant lacking 25 amino acids does not improve 3-fucosyllactose production. Truncation of 78 amino acids decreases the production of 3-fucosyllactose
the C-terminus of FutB is composed of 7 heptad repeats, construction of truncated forms, with C-terminal deletions of 25, 43, 57, and 78 residues. Upon expression in Escherichia coli, the truncated proteins show enhanced expression levels. Cells expressing the truncation variant lacking 43 amino acids produce 4.7 times more 3-fucosyllactose compared to wild-type. Deletion of half the membrane-anchoring region in the variant lacking 25 amino acids does not improve 3-fucosyllactose production. Truncation of 78 amino acids decreases the production of 3-fucosyllactose
the C-terminus of FutB is composed of 7 heptad repeats, construction of truncated forms, with C-terminal deletions of 25, 43, 57, and 78 residues. Upon expression in Escherichia coli, the truncated proteins show enhanced expression levels. Cells expressing the truncation variant lacking 43 amino acids produce 4.7 times more 3-fucosyllactose compared to wild-type. Deletion of half the membrane-anchoring region in the variant lacking 25 amino acids does not improve 3-fucosyllactose production. Truncation of 78 amino acids decreases the production of 3-fucosyllactose
the C-terminus of PylT is composed of 10 heptad repeats, responsible for dimerization of the enzymes, and a peripheral membrane anchoring region. Upon deletion of the 42-amino acid-long membrane-binding region, 3-fucosyllactose production by the recombinant enzyme is improved by 4.5fold
the C-terminus of PylT is composed of 10 heptad repeats, responsible for dimerization of the enzymes, and a peripheral membrane anchoring region. Upon deletion of the 42-amino acid-long membrane-binding region, 3-fucosyllactose production by the recombinant enzyme is improved by 4.5fold
the C-terminus of PylT is composed of 10 heptad repeats, responsible for dimerization of the enzymes, and a peripheral membrane anchoring region. Upon deletion of the 42-amino acid-long membrane-binding region, 3-fucosyllactose production by the recombinant enzyme is improved by 4.5fold
wild-type C-terminus contains two heptad repeats. Construction of truncated forms, with C-terminal deletions of 27, 46, 53, and 59 residues. Upon expression in Escherichia coli, the truncated proteins show enhanced expression levels, i.e. 7fold for the shortest variant. Cells expressing the truncation variant lacking 43 amino acids produce 4.7 times more 3-fucosyllactose compared to wild-type
wild-type C-terminus contains two heptad repeats. Construction of truncated forms, with C-terminal deletions of 27, 46, 53, and 59 residues. Upon expression in Escherichia coli, the truncated proteins show enhanced expression levels, i.e. 7fold for the shortest variant. Cells expressing the truncation variant lacking 43 amino acids produce 4.7 times more 3-fucosyllactose compared to wild-type
wild-type C-terminus contains two heptad repeats. Construction of truncated forms, with C-terminal deletions of 27, 46, 53, and 59 residues. Upon expression in Escherichia coli, the truncated proteins show enhanced expression levels, i.e. 7fold for the shortest variant. Cells expressing the truncation variant lacking 43 amino acids produce 4.7 times more 3-fucosyllactose compared to wild-type
synthesis of fluorescein-isothiocyanate-labeled and carboxyfluorescein-labeled NDP-beta-L-fucose derivatives, and application in labeling of different glycoproteins with the aid of fucosyltransferases. The fluorescein-isothiocyanate-labeled fucose is the best of these substrates, and the bacterial enzyme FucT tolerates the fluorescent substrates better than human fucosyltransferases
expression of bacterial alpha-1,3-fucosyltransferase in engineered Escherichia coli deficient in beta-galactosidase activity and expressing the essential enzymes for the production of guanosine 5'-diphosphate-L-fucose, for synthesis of 3-fucosyllactose. The fucT gene gives the best 3-fucosyllactose production in a simple batch fermentation process using glycerol as a carbon source and lactose as an acceptor. With concomitant blocking the colanic acid biosynthetic pathway, the recombinant strain exhibits the highest concentration (11.5 g/l), yield (0.39 mol/mol), and productivity (0.22 g/l/h) of 3-fucosyllactose in glycerol-limited fed-batch fermentation
to overcome the poor solubility of FutA upon expression in Escherichia coli, codon optimization, and systematic truncation of the protein at the C-terminus with only one heptad repeat remaining yield 150-200 mg/l of soluble protein of FutA and result in more than an 18fold increase in the 3-fucosyllactose yield. Mutant A128N obtained by focused directed evolution mutant displays a 3.4fold higher catalytic activity than wild-type FutA. Mutant A128N/H129E/Y132I exhibits a 9.6fold improvement in specific activity when compared to wild-type. Mutants A128N/H129E/S46F and A128N/H129E/Y132I/S46F show synergistic effects, that is 14.5- and 15.5fold improvement in specific activity relative to wild-type. The mutations increase the binding affinity for lactose and kcat values for lactose and GDP-fucose. The quadruple mutant A128N/H129E/Y132I/S46F synthesizes 3-fucosyllactose with an improved yield and productivity (more than 96% yield based on 5 mM of GDP-Fuc within 1 h)
Purification, kinetic characterization, and mapping of the minimal catalytic domain and the key polar goups of Helicobacter pylori alpha-(1,3/1,4)-fucosyltransferases
Biochemical characterization of Helicobacter pylori alpha1-3-fucosyltransferase and its application in the synthesis of fucosylated human milk oligosaccharides