scholarly journals Interactions of human acetylcholinesterase with phenyl valerate and acetylthiocholine: Thiocholine as an enhancer of phenyl valerate esterase activity

2022 ◽  
Vol 351 ◽  
pp. 109764
Author(s):  
Jorge Estévez ◽  
Marina Terol ◽  
Miguel Ángel Sogorb ◽  
Eugenio Vilanova
Keyword(s):  
Esterase Activity

Study of Thrombin-Coagulase

1967 ◽  
Vol 17 (03/04) ◽  
pp. 321-334 ◽  
Author(s):  
J. P Soulier ◽  
Odette Prou-Wartelle ◽  
Liliane Hallé ◽  
Keyword(s):  
Esterase Activity ◽  
Adsorption Chromatography ◽  
The Difference

SummaryThe preparation of thrombin-coagulase is described. The properties of thrombin-coagulase are compared with those of biothrombin: kinetics, thermostability, adsorption, chromatography, esterase activity, clotting activity, action on platelets and on factors V and VIII, susceptibility to inhibitors.Biothrombin and thrombin-coagulase are closely related but distinct. Both apparently derive from prothrombin. Prothrombin and coagulase combine to form a complex: thrombin-coagulase wherein both factors are necessary for its activity. Possible explanations for the difference between thrombin-coagulase and biothrombin are proposed.

Activity of Plasmin and Streptokinase-Activator on Substituted Arginine and Lysine Esters

1966 ◽  
Vol 16 (01/02) ◽  
pp. 018-031 ◽  
Author(s):  
S Sherry ◽  
Norma Alkjaersig ◽  
A. P Fletcher
Keyword(s):  
Molecular Structure ◽  
Methyl Ester ◽  
Comparative Studies ◽  
Esterase Activity ◽  
Methyl Esters ◽  
Hydrolytic Activity ◽  
The Other ◽  
Other Hand

SummaryComparative studies have been made of the esterase activity of plasmin and the streptokinase-activator of plasminogen on a variety of substituted arginine and lysine esters. Human plasmin preparations derived by different methods of activation (spontaneous in glycerol, trypsin, streptokinase (SK) and urokinase) are similar in their esterase activity; this suggests that the molecular structure required for such esterase activity is similar for all of these human plasmins. Bovine plasmin, on the other hand, differs from human plasmin in its activity on several of the substrates studied (e.g., the methyl esters of benzoyl arginine and tosyl, acetyl and carbobenzoxy lysine), a finding which supports the view that molecular differences exist between the two animal plasmins. The streptokinase-activator hydrolyzes both arginine and lysine esters but the ratios of hydrolytic activity are distinct from those of plasmin and of other activators of plasminogen. The use of benzoyl arginine methyl ester as a substrate for the measurement of the esterase activity of the streptokinase-activator is described.

scholarly journals Nigexine, a Phospholipase A2 from Cobra Venom with Cytotoxic Properties Not Related to Esterase Activity

1989 ◽  
Vol 264 (22) ◽  
pp. 13289-13297
Author(s):  
S Chwetzoff ◽  
S Tsunasawa ◽  
F Sakiyama ◽  
A Ménez
Keyword(s):  
Phospholipase A2 ◽  
Esterase Activity ◽  
Cobra Venom

scholarly journals THE EFFECT OF TEMPERATURE ON THE ESTERASE ACTIVITY OF CHYMOTRYPSIN

1950 ◽  
Vol 182 (2) ◽  
pp. 577-584
Author(s):  
John E. Snoke ◽  
Hans. Neurath
Keyword(s):  
Esterase Activity ◽  
Effect Of Temperature

scholarly journals Regulation of neutral cholesterol esterase activity by phospholipids containing negative charges in substrate liposome

1995 ◽  
Vol 36 (11) ◽  
pp. 2303-2310
Author(s):  
I Ishii ◽  
R Onozaki ◽  
E Takahashi ◽  
S Takahashi ◽  
N Fujio ◽  
...  
Keyword(s):  
Esterase Activity ◽  
Cholesterol Esterase

scholarly journals The Esterase Activity of Bovine Mercaptalbumin

1972 ◽  
Vol 247 (4) ◽  
pp. 1265-1271
Author(s):  
J. Tyson Tildon ◽  
James W. Ogilvie
Keyword(s):  
Esterase Activity

Variation in Quantity of Methanol Recovered from Raisins

1963 ◽  
Vol 46 (2) ◽  
pp. 341-343
Author(s):  
M Alice Brown ◽  
James R Woodward ◽  
Floyd DeEds
Keyword(s):  
Methyl Ester ◽  
Esterase Activity ◽  
Enzymic Hydrolysis ◽  
Methanol Content ◽  
Naturally Occurring ◽  
Pectin Esterase ◽  
Hydrolysis Of

Abstract The amount of naturally occurring methanol in fruit must be known so that the quantity left as fumigation residue can be determined. In a study of methanol content of raisins, which had given inconsistent results, the raisins were subjected to different conditions of treatment immediately prior to methanol determination. Conditions that favored pectin esterase activity gave higher values for methanol content than conditions known to inactivate enzymes. Evidence was also obtained that both chemical and enzymic hydrolysis of methyl ester groups of pectic materials occur during analysis.

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