We investigated the transglycosylation reaction of two types of oligosaccharide acceptors, i.e., β-cyclodextrin (CD) derivatives 1 and 2 conjugated with multiple glucose (Glc) units, catalyzed by endo-β-N-acetyl-glucosaminidase from Mucor hiemalis (Endo-M) using the oligosaccharide donor sialoglycopeptide (SGP). The acceptor specificity of the enzyme transglycosylation of 1 and 2 having seven Glc moieties within small nanoscale spatial regions on the β-CDs was investigated on the basis of the effect of the molar ratios of SGP to acceptors 1 or 2 with different spatial configurations on the transglycosylation behavior. The formation of the corresponding CD-based oligosaccharide clusters from Endo-M was also evaluated.
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http://dx.doi.org/10.1016/j.carres.2024.109352 | DOI Listing |
Carbohydr Res
December 2024
Faculty of Pharmacy and Pharmaceutical Sciences, Josai University, 1-1 Keyakidai, Sakado, Saitama, 350-0295, Japan. Electronic address:
We investigated the transglycosylation reaction of two types of oligosaccharide acceptors, i.e., β-cyclodextrin (CD) derivatives 1 and 2 conjugated with multiple glucose (Glc) units, catalyzed by endo-β-N-acetyl-glucosaminidase from Mucor hiemalis (Endo-M) using the oligosaccharide donor sialoglycopeptide (SGP).
View Article and Find Full Text PDFFEBS J
December 2024
Section for Protein Chemistry and Enzyme Technology, Department of Biotechnology and Biomedicine, DTU Bioengineering, Technical University of Denmark, Kgs. Lyngby, Denmark.
Food Chem
February 2025
Copenhagen Plant Science Center, Department of Plant and Environmental Sciences, Faculty of Science, University of Copenhagen, Denmark; Department of Food Science and Nutrition, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, China. Electronic address:
Amylopectin (AP)-only (APBS), normal (NBS), and amylose (AM) only (AOBS) barley starches were selected here to investigate catalysis pattern of maltogenic α-amylase (MA) on hydrolyzing AP and AM granular starches. MA shortened starch side chains with degree of polymerization (DP) 11-30. MA-treated APBS exhibited porous granular structures and dramatically increased degree of branching (DB, 17-20 %), and reduced ordered degrees, suggesting high hydrolysis and transglycosylation activities of MA.
View Article and Find Full Text PDFEnzyme Microb Technol
December 2024
Department of Food and Biotechnology, Korea University, Sejong 30019, Republic of Korea. Electronic address:
This study presents the enzymatic synthesis of resveratrol-3,4'-O-α-diglucoside (RDG) using a hyperactive O-α-glycoligase (MalA-D416R/Q450S) and α-glucopyranosyl fluoride as the donor substrate. The transglycosylation rate for resveratrol by MalA-D416R/Q450S was maximized in 100 mM Tris-HCl (pH 9.5) containing 20 % DMSO at 45°C.
View Article and Find Full Text PDFJACS Au
June 2024
Life Science Group, Scientific Research Division, National Synchrotron Radiation Research Center, 101, Hsin-Ann Road, Hsinchu 300092, Taiwan.
Monoclonal antibodies (mAbs) have gradually dominated the drug markets for various diseases. Improvement of the therapeutic activities of mAbs has become a critical issue in the pharmaceutical industry. A novel endo-β--acetylglucosaminidase, EndoSz, from is discovered and applied to enhance the activities of mAbs.
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