Transglycosylation and Glycosyl Condensation by Enzyme in Organic Cosolvent Systems.

نویسندگان
چکیده

برای دانلود رایگان متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Enzymology in aqueous-organic cosolvent binary mixtures.

The theory and results of solvent structure control on solute behavior for ordinary chemical reactions, generated in other laboratories (e.g. by Arnett and colleagues), were applied to enzyme reactions in water-organic cosolvent binary mixtures. Three kinds of reactions were studied: (a) catalysis of substrate reactions; (b) denaturation, judged by loss of overall activity; (c) renaturation, ai...

متن کامل

Transglycosylation of glycosyl residues to cyclic tetrasaccharide by Bacillus stearothermophilus cyclomaltodextrin glucanotransferase using cyclomaltodextrin as the glycosyl donor.

Cyclomaltodextrin glucanotransferase (EC 2.4.1.19, abbreviated as CGTase) derived from Bacillus stearothermophilus produced a series of transfer products from a mixture of cyclomaltohexaose and cyclic tetrasaccharide (cyclo[-->6)-alpha-D-Glcp-(1-->3)-alpha-D-Glcp-(1-->6)-alpha-D-Glcp-(1-->3)-alpha-D-Glcp-(1-->], CTS). Of the transfer products, only two components, saccharides A and D, remained ...

متن کامل

Poly (vinylpyrrolidone)-Grafted Silica as a Polymeric Cosolvent Catalyst for Organic Transformations in Organic and Aqueous Media

Poly (vinylpyrrolidone)-grafted silica as an organic-inorganic hybrid material was used as an effective heterogeneous polymeric cosolvent catalyst in organic reactions. This modified silica catalyzed nucleophilic displacement of alkyl halides for easy preparation of alkyl thiocyanates, alkyl cyanides, alkyl azides and alkyl aryl ethers. Furthermore, the catalyst was applied for the conversion o...

متن کامل

Catalytic activity of enzyme in water/organic cosolvent mixtures for the hydrolysis of p-nitrophenyl acetate and p-nitrophenyl benzoate

The dependence of the catalytic activities of α-chymotrypsin on the concentration of organic cosolvents (acetonitrile, dimethyl sulfoxide, dimethyl formamide, ethylene glycol, methanol, ethanol, propan-2-ol and tert-butanol) in mixed aqueous media has been studied towards hydrolysis of p-nitrophenyl acetate and p-nitrophenyl benzoate using cetyltriphenylphosphonium bromide surfactant at pH 7.75...

متن کامل

Effects of organic arsenicals on enzyme systems.

Investigations have been carried out by us in the Biochemical Laboratory of the Cardiff City Mental Hospital during 1938, 1939 and early 1940 on the effects of organic trivalent and pentavalent arsenic compounds on proteins and enzymes. The work was primarily undertaken to elucidate the biochemical basis of the trypanocidal and anti-spirochaetal action of a variety of organic arsenic compounds ...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

ژورنال

عنوان ژورنال: Journal of the agricultural chemical society of Japan

سال: 1991

ISSN: 0002-1407,1883-6844

DOI: 10.1271/nogeikagaku1924.65.1107