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Galactose 1-epimerases

It is this transferase that is missing in galactosemia. UDP-galactose is normally transformed to UDP-glucose by UDP-galactose epimerase, and UDP-glucose may then form glycogen. [Pg.486]

Wyk, R, and Reeves, R. R. (1989). Identification and sequence of the gene for abequose synthase, which confers antigenic specificity on group B salmonellae Homology with galactose epimerase. J. Bacteriol. 171, 5687-5693. [Pg.325]

Finally, UDP-galactose is epimerized to UDP-glucose by the action of UDP-galactose epimerase (see Figure 12-6). This UDP-glucose can be used in the galactosyltransferase reaction. [Pg.173]

UDP-glucose-4-galactose epimerase (yeast, 10 U) no reported risk... [Pg.417]

Galactose epimerase deficiency see Inborn errors of metabolism. [Pg.237]

The metabolic interconversion of 2-deoxy-2-fluoro-D glucose and 2-deoxy-2-fluoro-D-mannose (and their 6-phosphates) in tumour cells was investigated by F - NMR spectroscopy, and a mannose glucose equilibrium ratio of -4 1 was observed.The conversion of 2-deoxy-2-fluoro-D-galactose into its aluco-isomer via the action of a UDP-galactose epimerase has been observed in vivo in mice by use of F - NMR spectroscopy ... [Pg.88]

Especially noteworthy is the use of sucrose, Glca(l-2)Fru, as the ultimate source of UDP-Gal. In a first step sucrose synthase from rice cleaves the disaccharide and forms UDP-Glc in the presence of UDP. UDP-Glc is subsequently epimerized at the 4-position by UDP galactose epimerase to give the required UDP-Gal. This donor substrate is first used by P(l-4)galactosyl transferase to produce the N-acetyllactosamine intermediate and then by a(l-3)galactosyl transferase to gal-... [Pg.641]

Galactose, one of the eight essential monosaccharides (Section 25.7), is biosynthesized from UDP-glucose by galactose 4-epimerase, where UDP = uridylyl diphosphate (a ribonucleotide diphosphate Section 28.1). The enzyme requires NAD+ for activity (Section 17.7), but it is not a stoichiometric reactant. and NADH is not a final reaction product. Propose a mechanism. [Pg.1011]

UDPGal = UDPG Uridine diphosphate galactose 4-epimerase... [Pg.29]

See other pages where Galactose 1-epimerases is mentioned: [Pg.30]    [Pg.30]    [Pg.31]    [Pg.596]    [Pg.207]    [Pg.106]    [Pg.112]    [Pg.346]    [Pg.32]    [Pg.429]    [Pg.2431]    [Pg.383]    [Pg.146]    [Pg.362]    [Pg.368]    [Pg.1865]    [Pg.541]    [Pg.173]    [Pg.94]    [Pg.417]    [Pg.419]    [Pg.420]    [Pg.135]    [Pg.244]    [Pg.315]    [Pg.246]    [Pg.69]    [Pg.77]    [Pg.417]    [Pg.419]    [Pg.420]    [Pg.247]    [Pg.578]    [Pg.642]    [Pg.634]    [Pg.110]    [Pg.167]    [Pg.172]    [Pg.35]    [Pg.30]   


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Epimerases

Galactose epimerase

Galactose epimerase

UDP-galactose 4-epimerase

Uridine diphosphate galactose 4-epimerase

Uridine galactose 4-epimerase

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