L-galactose 1-dehydrogenase
L-galactose 1-dehydrogenase (, ''L-GalDH'', ''L-galactose dehydrogenase'') is an enzyme with the systematic name ''L-galactose:NAD+ 1-oxidoreductase''. This enzyme catalyses the following chemical reaction: : L-galactose + NAD+ \rightleftharpoons L-galactono-1,4-lactone + NADH + H+ The enzyme catalyses a step in the ascorbate biosynthesis in higher plant Vascular plants (), also called tracheophytes (, ) or collectively tracheophyta (; ), are plants that have lignified tissues (the xylem) for conducting water and minerals throughout the plant. They also have a specialized non-lignified tissue ( ...s. References External links * {{Portal bar, Biology, border=no EC 1.1.1 ...
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D-galactose 1-dehydrogenase
In enzymology, a -galactose 1-dehydrogenase () is an enzyme that catalyzes the chemical reaction :-galactose + NAD+ \rightleftharpoons -galactono-1,4-lactone + NADH + H+ Thus, the two substrates of this enzyme are -galactose and NAD+, whereas its 3 products are -galactono-1,4-lactone, NADH, and H+. This enzyme belongs to the family of oxidoreductases, specifically those acting on the CH-OH group of donor with NAD+ or NADP+ as acceptor. The systematic name of this enzyme class is -galactose:NAD+ 1-oxidoreductase. Other names in common use include -galactose dehydrogenase, beta-galactose dehydrogenase, and NAD+-dependent -galactose dehydrogenase. This enzyme participates in galactose metabolism Galactose (, '' galacto-'' + ''-ose'', ), sometimes abbreviated Gal, is a monosaccharide sugar that is about as sweet as glucose, and about 65% as sweet as sucrose. It is an aldohexose and a C-4 epimer of glucose. A galactose molecule linked wit .... References * * EC 1.1.1 ...
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