Kurakake, Masahiro published the artcileSynthesis of New Glycosides by Transglycosylation of N-Acetylhexosaminidase from Serratia marcescens YS-1, Category: alcohols-buliding-blocks, the main research area is oligosaccharide acetamidodeoxy glycoside synthesis enzymic transglycosylation acetylhexosaminidase Serratia marcescens.
Serratia marcescens YS-1, a chitin-degrading microorganism, produced mainly N-acetylhexosaminidase. The purified enzyme had an optimal pH of ∼8-9 and remained stable at 40 °C for 60 min at pH 6-8. The optimum temperature was around 50 °C, and enzyme activity was relatively stable below 50 °C. YS-1 N-acetylhexosaminidase hydrolyzed p-nitrophenyl β-N-acetylgalactosamide by 28.1% relative to p-nitrophenyl β-N-acetylglucosamide. The N-acetylchito-oligosaccharides were hydrolyzed more rapidly, but the cellobiose and chitobiose of disaccharides that had the same β-1,4 glycosidic bond as di-N-acetylchitobiose were not hydrolyzed. YS-1 N-acetylhexosaminidase efficiently transferred the N-acetylglucosamine residue from di-N-acetylchitobiose (substrate) to alcs. (acceptor). The ratio of transfer to methanol increased to 86% in a reaction with 32% methanol. N-Acetylglucosamine was transferred to the hydroxyl group at C1 of mono-alcs. A di-alc. was used as an acceptor when the carbon number was more than 4 and a hydroxyl group existed on each of the two outside carbons. Sugar alcs. with hydroxyl groups in all carbon positions were not proper acceptors.
Journal of Agricultural and Food Chemistry published new progress about Disaccharides Role: RCT (Reactant), RACT (Reactant or Reagent). 64519-82-0 belongs to class alcohols-buliding-blocks, name is (3R,4R,5R)-6-(((2S,3R,4S,5S,6R)-3,4,5-Trihydroxy-6-(hydroxymethyl)tetrahydro-2H-pyran-2-yl)oxy)hexane-1,2,3,4,5-pentaol, and the molecular formula is C12H24O11, Category: alcohols-buliding-blocks.
Referemce:
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Alcohols – Chemistry LibreTexts