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Enzymes galactosyl transferase

FIGURE 6.20 A disaccharide of galactose and glucose is covalently linked to the 5-hydroxyl group of hydroxylysines in collagen by the combined action of the enzymes galactosyl transferase and glucosyl transferase. [Pg.177]

Mutant or knockout mice defective in specific enzymes involved in lipid synthesis have provided powerful tools for genetic analysis of lipid function in the nervous system. For example, disruption of the genes for ceramide galactosyl transferase or galactosyl ceramide sulfotransferase,... [Pg.44]

The enzymes involved are nucleoside diphosphohexosetransferases, probably GDP-D-mannosyltransferase (EC 2.4.1.32) and UDP-D-galactosyl-transferase. For a structurally related polymer, (1 - 6)-a-D-xylosyl-(l - 4)-/3-D-glucan, synthesis was shown to involve concurrent incorporation of D-xylose and D-glucose, and not substitution by D-xylose of a preformed (1 - 4)-/3-D-glucan chain.34 The insolubility of (1 - 4)-/3-D-glucan and man-nan would make the latter mechanism unlikely. [Pg.172]

The enzyme that adds galactose units to growing polysaccharide chains is galactosyl transferase. [Pg.166]

Fig. 3. Representative pathway for the biosynthesis of Asn-linked oligosaccharide. Biosynthesis starts in the rough endoplasmic reticulum and proceeds through the cis-, medial-, and trans-Golgi apparatus, before glycoprotein is secreted. Some of the enzymes involved are oligosaccharyl transferase (OST) a-glucosidase I II (aG I II) ER-mannosidase (aM) a-mannosidase I II (aM I II) N-acetylglucosaminyl transferase I II (GnT I II) fucosyl transferase (FucT) galactosyl transferase (GalT) sialyl transferase (ST). n-Gn O-Man -Glc V-Fuc A-Gal O-SA (adopted from [40])... Fig. 3. Representative pathway for the biosynthesis of Asn-linked oligosaccharide. Biosynthesis starts in the rough endoplasmic reticulum and proceeds through the cis-, medial-, and trans-Golgi apparatus, before glycoprotein is secreted. Some of the enzymes involved are oligosaccharyl transferase (OST) a-glucosidase I II (aG I II) ER-mannosidase (aM) a-mannosidase I II (aM I II) N-acetylglucosaminyl transferase I II (GnT I II) fucosyl transferase (FucT) galactosyl transferase (GalT) sialyl transferase (ST). n-Gn O-Man -Glc V-Fuc A-Gal O-SA (adopted from [40])...
A similar reaction had previously been observed by McGuire and coworkers in an investigation of D-galactosyl transferase in bovine colostrum and in a particulate fraction of rat tissues this enzyme is believed to play an important role in the biosynthesis of carbohy-... [Pg.371]

The soluble D-galactosyl transferase has now been highly purified, and found to contain an unidentified lipid. Extraction of this lipid prevented the aggregation of enzyme molecules, but the presence of this lipid was not necessary for enzyme activity. [Pg.414]

See other pages where Enzymes galactosyl transferase is mentioned: [Pg.182]    [Pg.230]    [Pg.1222]    [Pg.182]    [Pg.230]    [Pg.1222]    [Pg.38]    [Pg.528]    [Pg.309]    [Pg.168]    [Pg.66]    [Pg.164]    [Pg.105]    [Pg.257]    [Pg.35]    [Pg.141]    [Pg.481]    [Pg.554]    [Pg.587]    [Pg.219]    [Pg.220]    [Pg.348]    [Pg.112]    [Pg.270]    [Pg.289]    [Pg.137]    [Pg.146]    [Pg.171]    [Pg.69]    [Pg.1949]    [Pg.351]    [Pg.5]    [Pg.175]    [Pg.258]    [Pg.144]    [Pg.312]    [Pg.364]    [Pg.925]    [Pg.1143]    [Pg.23]    [Pg.194]    [Pg.370]    [Pg.412]    [Pg.413]    [Pg.415]    [Pg.415]    [Pg.416]   
See also in sourсe #XX -- [ Pg.498 ]



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3 -galactosyl transferase

Enzymic galactosylation

Galactosyl-

Galactosylation

Transferases enzymes

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