Melibiose properties

Zani, M-L., Pourcher, T., Leblanc, G. (1993). Mutagenesis of acidic residues in putative membrane-spanning segments of the melibiose permease of Escherichia coli II. Effect on cationic selectivity and coupling properties. J. Biol. Chem. 268,3216-3221. 

Properties of Pentahydrate, M.p. 80°C. [a] +105.2° (c, 4 water). Partially fermented by top yeast (bakers yeast) with formation of melibiose completely fermented by bottom yeast. Nonreducing. 

From the Tj values of H2 0, measured for aqueous solutions of melibiose, trehalose, maltotriose, melezitose and a- and y-cyclodextrins as a function of concentration, "dynamic hydration numbers" ("DHN), a quantity which expresses the hydration properties of solutes, were calculated. The "DHN values for these compounds and for several monosaccharides correlated linearly with the mean number of equatorial hydroxyl groups. The application of P-n.m.r. spectroscopy to fructose diphosphate is referred to in Part 4 above. 

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