Kojibiose

Disaccharides cellobiose and cellobiulose, (gentiobiose, isomaltose, kojibiose, laminarabiose, leucrose, melibiose, nigerose, palatinose, sophorose, trehalose, turanose, and xylobiose), lactose and lactulose, maltose and maltulose ... 

Maltose isomaltose maltulose melezitose leucrose kojibiose nigerose ... 

The approximate proportions of these sugars in the oligosaccharide fraction (3.65%) of the honey were maltose, 29.4 kojibiose, 8.2 turanose, 4.7 isomaltose, 4.4 sucrose, 3.9 ketose band (mixture... 

A second protein having antidextran activity, J 558 (a,A.), precipitates well with dextrans containing high proportions of a-D-(l — 3)-linked D-glucopyranosyl residues.49 Confirmation of this specificity comes from the observation that oligosaccharides in the nigerose series are excellent inhibitors. Kojibiose and isomaltose are very... 

The synthesis of the C-disaccharide 1 of kojibiose from the glucosyl radical 2 and the alkene 3 is a good example for the C-C bond formation by a radical approach (Scheme 2) [2-4],... 

Teichoic acids are often covalently attached to glycolipids which are part of the plasma membrane. For example, the glycerolteichoic acid of Streptococcus faecium contains about 28 monomer units of glycerol phosphate, approximately 60% of which carry residues of kojibiose (Glual —> 2Glu) as a phosphatidylkojibiosyl diacylglycerol membrane anchor.600 Teichuronic acids contain uronic acids ... 

D-glucose in the ratio of 8.3 1 and only a trace of a di-O-methyl-D-glucose, further confirming that it was a (1—>6)-linked polymer. The disaccharide fraction from the zinc chloride polymerization of 1,3,4,6-tetra-O-acetyl-D-glucose gave sophorose and kojibiose in the ratio of 3 1, whereas 1,2,3,6-tetra-O-acetyl-D-glucose gave cellobiose and maltose in the same ratio. 

Epimers, diastereomers that differ only in a single chiral carbon that is not the reference carbon, such as D-glucose and D-galactose which differ only in -OH orientation at C-4. (e.g. D-glucose and D-galactose are epimers in C-4 Fig. 7.4) Regioisomers, which differ in the position of a substituent on the ring, as maltose and kojibiose (Fig. 7.5)... 

The shapes of the inhibition curves are atypical in that they are curves up to about 40% inhibition and are then essentially linear. Such behavior is associated with IgA immunoglobulins that are mixtures of IgA monomer and polymer separation of the polymer from the monomer fraction (Fig. 8C) results in typical inhibition curves. The other curves in Figs. 8A, B, and C provide additional data as to the site specificity of the myeloma antidextrans. Thus, with W3129, it may be seen that methyl a-o-Glc is much poorer than IM2 but much better than methyl jS-D-Glc (W3434 was not studied). The a-(l- 6) linkage is essential for the specificity since maltose, D-Glc-a-(l- 4)-D-Glc, and kojibiose, D-Glc-a-(l- 2)-D-Glc, are essentially inactive whereas nigerose, D-Glc-a-(1 3)-D-Glc, is much less active than methyl a-o-Glc. 

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