Results 31 to 40 of about 5,064 (210)

Beyond Nature's Blueprint: Macrocyclic Peptides Containing Unnatural Amino Acids in Therapeutic Development

open access: yesAngewandte Chemie, EarlyView.
Strategic incorporation of unnatural amino acids transforms macrocyclic peptides into drug‐like molecules capable of engaging challenging targets. These building blocks enhance stability, permeability, and bioavailability, accelerating the development of next‐generation peptide therapeutics.
Krishna K. Sharma   +5 more
wiley   +2 more sources

Batch and flow synthesis of nucleosides by enzymatic transglycosylation [PDF]

open access: yes, 2017
Enzymatic methods for the preparation of high-value products have clearly shown their potential in many areas, including nucleic acid chemistry. Enzymes of nucleic acid metabolism such as nucleoside phosphorylases (NPs, EC 2.4.2) can be conveniently used
Rabuffetti M.   +6 more
core   +3 more sources

Broad‐Spectrum, Cell Envelope‐Active Marinocyclin Antibiotics From a Coral‐Derived Bacterium Are Effective Against Colistin‐Resistant Bacteria

open access: yesAngewandte Chemie, EarlyView.
Marinocyclins, polycationic macrocyclic depsipeptides, were discovered by genome mining from the marine coral‐derived bacterium Aquimarina megaterium. The compounds have broad‐spectrum activity against gram‐positive and gram‐negative ESKAPE bacteria.
Clara Chepkirui   +9 more
wiley   +2 more sources

Two fungal flavonoid-specific glucosidases/rutinosidases for rutin hydrolysis and rutinoside synthesis under homogeneous and heterogeneous reaction conditions

open access: yesAMB Express, 2021
The glycosidases within GH5-23 cleave the glycosidic bond of β-glucosylated or rutinosylated flavonoids. Moreover, by virtue of their transglycosylation activity, glycoconjugates with glucosyl and rutinosyl moieties are accessible.
Michael Kotik   +3 more
doaj   +1 more source

Introducing transglycosylation activity in a liquefying α‐amylase [PDF]

open access: yesFEBS Letters, 1999
By mutating Ala‐289 by Phe or Tyr in the Bacillus stearothermophilus α‐amylase, we induced this enzyme to perform alcoholytic reactions, a function not present in the wild‐type enzyme. This residue was selected from homology analysis with neopullulanase, where the residue has been implicated in the control of transglycosylation [Kuriki et al. (1996) J.
Saab-Rincón, Gloria   +4 more
openaire   +2 more sources

Efficient Bioconversion of Stevioside and Rebaudioside A to Glucosylated Steviol Glycosides Using an Alkalihalobacillus oshimesis-Derived Cyclodextrin Glucanotransferase

open access: yesMolecules, 2023
The enzymatic transglycosylation of steviol glycosides can improve the edulcorant quality of steviol glycosides. Cyclodextrin glucanotransferase (CGTase) is one of the most popular glucanotransferases applied in this reaction.
Ruiqin Zhang   +6 more
doaj   +1 more source

Transglycosylation to Ginseng Saponins by Cyclomaltodextrin Glucanotransferases

open access: yesBioscience, Biotechnology, and Biochemistry, 2001
Ten new alpha-glucosylginsenosides were found to be synthesized from dextrin and four ginsenosides, -Rb1, -Rc, -Re, and -Rg1, by the successive actions of B. stearothermophilus cyclomaltodextrin glucanotransferase and Rhizopus glucoamylase. Seven of them were isolated in the pure state by extraction with n-butanol saturated with water, silica gel ...
KIM, Young-Hoi   +4 more
openaire   +2 more sources

α-Glucosidase and β-glucosidase from psychrotrophic strain arthrobacter sp. C2-2

open access: yesCzech Journal of Food Sciences, 2005
In this work six psychophilic and psychrotrophic bacterial strains were screened for the presence of different glycosidase activities (α-galactosidase, α-glucosidase, β-glucosidase, α-mannosidase and β-glucuronidase).
Eva Benešová   +2 more
doaj   +1 more source

Heterologous Expression of a Thermostable α-Glucosidase from Geobacillus sp. Strain HTA-462 by Escherichia coli and Its Potential Application for Isomaltose–Oligosaccharide Synthesis

open access: yesMolecules, 2019
Isomaltose–oligosaccharides (IMOs), as food ingredients with prebiotic functionality, can be prepared via enzymatic synthesis using α-glucosidase. In the present study, the α-glucosidase (GSJ) from Geobacillus sp.
Fan Zhang   +6 more
doaj   +1 more source

Enzymatic conversion of β-mannans: Analysing, evaluating and modifying transglycosylation properties of glycoside hydrolases [PDF]

open access: yes, 2022
Retaining glycoside hydrolases are enzymes that catalyse the breakdown down of glycans through hydrolysis. Due to the double-replacement mechanism of the retaining glycoside hydrolases (GHs), which form an intermediate with part of the glycan covalently ...
Wiemann, Mathias
core  

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