Carbohydrates galactose

The reactivity and use of biocytin-hydrazide is similar to that described for biotin-hydrazide in Section 3, this chapter. The following protocol for labeling glycoproteins at oxidized carbohydrate (galactose) sites is from Bayer and Wilchek (1992). 

Antibodies Carbohydrates Galactose Mannose Fucose Xylosyl Folic acid Transferrin... 

Fermented carbohydrates Galactose, lactose, glucose, fructose, mannose, sucrose, maltose, trehalose, starch (Table 8) ... 

Follide-Stimiilating Hormone (FSH). This hormone also varies with its origin. Molecular weights between 25,000 and 30,000 are reported. Besides amino acids, the molecule also contains carbohydrates (galactose, mannose, fucose, hexosamine the total carbohydrate content is 7.5%). 

Galactose and also carbohydrates which yield galactose upon hydrolysis (e.g., lactose) are oxidised to the sparingly soluble mucic acid (compare Section II 1,139). 

D-galactose-4-sulfate—3,6-anhydro-D-galactose-2-sulfate (see Carbohydrates). 

Carbohydrates. Carbohydrates are the principal components of the cell wall, comprising 65—75% by weight of the dry wood. Total hydrolysis yields simple sugars, primarily glucose and xylose in hardwoods and glucose and mannose in softwoods. Minor amounts of galactose, arabinose, and rhamnose are present. 

Monosaccharides, which cannot be broken down chemically to simpler carbohydrates. The most familiar monosaccharides contain either six carbon atoms per molecule (glucose, fructose, galactose,.. . ) or five (ribose, arabinose,.. . ). 

FIGURE 4-15 Cyclic voltanmiograms for 1.5 x 10 3 M ribose (a), glucose (b), galactose (c), and fructose (d) recorded at a Ru02-modified carbon-paste electrode. Dotted lines were obtained in carbohydrate-free solutions. (Reproduced with permission from reference 50.)... 

The digestible dietary carbohydrates yield glucose, galactose, and fructose that are transported via the hepatic portal vein to the hver where galactose and fructose are readily converted to glucose (Chapter 20). 

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