Mechanistic insights into glycosidic bond activation in cellulose pyrolysis were obtained via first-principles density functional theory calculations that explain the peculiar similarity in kinetics for different stereochemical glycosidic bonds (beta vs alpha) and establish the role of the three-dimensional ...
Glu-537 is thought to be the residue that forms the covalent linkage with the intermediate. The electrostatic stabilization of the oxocarbonium ion is presumed to be mediated by the Mg2+-coordinated Glu-461. R’ is H for hydrolase activity. When R’ is a sugar (or alcohol), the activity...
glycosidic linkage with Tyr should beα-linked, we introduced an azido group to replace the Troc moiety and thereby facilitated the formation of theα-glycosyl linkage. The Troc moiety was cleaved with zinc and acetic acid with subsequent removal of the Ac protecting groups (to prevent Ac migrat...
METHOD OF OBTAINING NOVEL ALPHA,BETA-/D/-I/L/-GLYCOSIDIC DERIVATIVES OF AMINOACRIDINEThe invention relates to novel aminoacridine- alpha , beta -(D)- and -(L)-N-glycoside derivatives, the salts thereof and to a novel process for the preparation of such compounds and salts. The novel ...
The present invention relates to use of an enzyme that cleaves both alpha- and beta-1,4-glycosidic bonds and, more particularly, the present invention provides α-L-fucosidase which has α-1,4-glucosidase and β-1,4-galactosidase activities and thus is capable of producing glucose and/or ...
METHOD OF OBTAINING NOVEL ALPHA,BETA-/D/-I/L/-GLYCOSIDIC DERIVATIVES OF AMINOACRIDINEThe invention relates to novel aminoacridine- alpha , beta -(D)- and -(L)-N-glycoside derivatives, the salts thereof and to a novel process for the preparation of such compounds and salts. The novel ...
The present invention relates to use of an enzyme that cleaves both alpha- and beta-1,4-glycosidic bonds and, more particularly, the present invention provides α-L-fucosidase which has α-1,4-glucosidase and β-1,4-galactosidase activities and thus is capable of producing glucose and/or ...
A less likely but possible alternative is that CslF6 produces cello-dextrins that are joined together at the plasma membrane by yet an unidentified protein via a single β-(1,3)-glycosidic linkage, creating the β-D-glucan chains that are then recognized by the β-D-glucan-specific antibody...
(1,6)-glycosidic bonds possessing insoluble properties. From the meta-analysis, the weight gain and feed intake of nursery pigs increased by 7.6% and 5.3%, respectively, through the use of yeast β-glucans (fromSaccharomyces cerevisiae), and increased by 11.6% and 6.9%, respectively, through ...
Chitosan is a polysaccharide composed of N-acetyl-D-glucosamine and D-glucosamine units linked by 1-4-β-glycosidic bonds. Its structure provides −NH2 groups that are protonated at low pH [40], favoring interaction with the negatively charged stratum corneum [41]. In addition, chitosan has ...