Results 161 to 170 of about 9,118 (184)
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1971
Publisher Summary Esterases catalyze the hydrolysis of a large number of uncharged carboxylic esters and their action is generally restricted to short chain fatty acid esters. This chapter focuses on B-esterases, which are inhibited stoichiometrically by organophosphates without hydrolyzing them.
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Publisher Summary Esterases catalyze the hydrolysis of a large number of uncharged carboxylic esters and their action is generally restricted to short chain fatty acid esters. This chapter focuses on B-esterases, which are inhibited stoichiometrically by organophosphates without hydrolyzing them.
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Molecular weight estimation of two carboxylic ester hydrolases ofEscherichia coli
Experientia, 1975Des electrophoreses a diverses concentrations d'acrylamide montrent que les carboxyliques esters hydrolases A et B d'E. coli possedent des poids moleculaires distincts: 52,000 et 63,000 daltons. Les variations de mobilite observees selon les souches proviennent essentiellement de differences dans les charges electriques.
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Biochimica et Biophysica Acta (BBA) - Enzymology, 1980
Purified carboxyl ester hydrolase (carboxylic-ester hydrolase, EC 3.1.1.1) from human pancreatic juice was found to hydrolyze triacetin, methyl butyrate and glycerides solubilized by bile salts. It has no activity on substrate presented as emulsoin or monomolecular films.
D, Lombardo, J, Fauvel, O, Guy
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Purified carboxyl ester hydrolase (carboxylic-ester hydrolase, EC 3.1.1.1) from human pancreatic juice was found to hydrolyze triacetin, methyl butyrate and glycerides solubilized by bile salts. It has no activity on substrate presented as emulsoin or monomolecular films.
D, Lombardo, J, Fauvel, O, Guy
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Biochimie, 1980
Human pancreatic carboxyl ester hydrolase is shown to catalyse the esterification of cholesterol and lipid-soluble vitamins A, E and D3 with oleic acid. The acitivity requires the presence of bile salts, and the trihydroxylated or the 3 alpha, 7 alpha dihydroxylated bile salts are better activators than the 3 alpha, 12 alpha dihydroxylated bile salts ...
D, Lombardo, P, Deprez, O, Guy
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Human pancreatic carboxyl ester hydrolase is shown to catalyse the esterification of cholesterol and lipid-soluble vitamins A, E and D3 with oleic acid. The acitivity requires the presence of bile salts, and the trihydroxylated or the 3 alpha, 7 alpha dihydroxylated bile salts are better activators than the 3 alpha, 12 alpha dihydroxylated bile salts ...
D, Lombardo, P, Deprez, O, Guy
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Lipids, 1990
AbstractFluorescent esters containing pyrenedecanoic acid (P10) or pyrenebutanoic (P4) acid (P4cholesterol, P10cholesterol, P4‐ and P10‐containing triacylglycerols) were synthesized and used as substrates for human pancreatic carboxylic ester hydrolase and bile salt‐stimulated lipase from human milk.
A, Negre-Salvayre +3 more
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AbstractFluorescent esters containing pyrenedecanoic acid (P10) or pyrenebutanoic (P4) acid (P4cholesterol, P10cholesterol, P4‐ and P10‐containing triacylglycerols) were synthesized and used as substrates for human pancreatic carboxylic ester hydrolase and bile salt‐stimulated lipase from human milk.
A, Negre-Salvayre +3 more
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Effect of alcohols on the hydrolysis catalyzed by human pancreatic carboxylic-ester hydrolase
Biochimica et Biophysica Acta (BBA) - Enzymology, 1981Transfer reactions catalyzed by human pancreatic carboxylic-ester hydrolase (EC 3.1.1.1) were studied in the presence of methanol and butanol as nucleophiles. The addition of alcohols produced an increase in the total rate of 4-nitrophenyl acetate and n-propylthiol acetate disappearance and a concomitant slow decrease of the hydrolysis rate.
D, Lombardo, O, Guy
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Computational Studies of Glycoside, Carboxylic Ester, and Thioester Hydrolase Mechanisms: A Review
Industrial & Engineering Chemistry Research, 2015This article is a review of computational work over the last ∼15 years to elucidate the catalytic mechanisms of three major enzyme classes: glycoside hydrolases, carboxylic ester hydrolases, and thioesterases. The mechanisms of glycoside hydrolases that both invert and retain the configuration of the anomeric carbon atom of the labile glycosidic bond ...
Peter J. Reilly, Carme Rovira
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Modification of the essential amino acids of human pancreatic carboxylic-ester hydrolase
Biochimica et Biophysica Acta (BBA) - Protein Structure and Molecular Enzymology, 1982Chemical modification of human pancreatic carboxylic-ester hydrolase (EC 3.1.1.1) were performed using organophosphorus compounds, ethoxyformic anhydride and Woodward's K reagent. It has been shown that: (1) the inhibition of the enzyme activity by organophosphorus compounds is due to the phosphorylation of only one alcohol residue, probably a serine ...
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Carboxyl ester hydrolases production and growth of a halophilic archaeon, Halobacterium sp. NRC-1
Extremophiles, 2009The capability of Halobacterium sp. NRC-1 to synthesize carboxyl ester hydrolases was investigated, and the effect of physicochemical conditions on the growth rate and production of esterases was evaluated. The haloarchaeon synthesized a carboxyl ester hydrolase, confirming the genomic prediction. This enzymatic activity was intracellularly produced as
Rosa María, Camacho +4 more
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FLUORIMETRIC ASSAY OF CARBOXYLIC ESTER HYDROLASES IN GUINEA-PIG SKIN AND THE EFFECTS OF PROPRANOLOL
British Journal of Dermatology, 1972Summary.— The application of a continuous fluorimetric assay technique to carboxylic ester hydrolases (including the cholinesterases) in skin is described. The kinetic properties of guinea-pig skin preparations from different anatomical sites are reported.
D W, Cotton, J J, van den Hurk
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