Aplysia oxymyoglobin with an unusual stability property: kinetic analysis of the pH dependence

Biochemistry ◽  
1986 ◽  
Vol 25 (13) ◽  
pp. 3898-3903 ◽  
Author(s):  
Keiji Shikama ◽  
Ariki Matsuoka
1976 ◽  
Vol 31 (11-12) ◽  
pp. 675-678 ◽  
Author(s):  
Dorothee Petz ◽  
Friedhelm Schneider

Abstract The catalytic properties of peptides containing histidine, cysteine and aspartic acid in ester hydrolysis were studied. Saturation kinetics were found for the reaction of p-nitrophenyl acetate (NPA) with Z-His-Ala-Asp-Gly-Cys-NH2 and Z-His-Ala-Gly-Gly-Cys-NH2 . The Brönsted equation for the hydrolysis of tert-butyloxycarbonyl-L-alanine-p-nitrophenylester (Boc-Ala-ONp) catalyzed by simple imidazole and SH-compounds was determined. The catalytic behaviour of the peptides in ester hydrolysis could not be described by the Brönsted equations for imidazole or thiole catalyzed hydrolysis of NPA and Boc-Ala-ONp. The pH dependence of the rate constants of the catalyzed ester hydrolysis gave no linear plots in 1/k versus H+ diagrams.


1965 ◽  
Vol 13 (01) ◽  
pp. 155-175 ◽  
Author(s):  
H. C Hemker ◽  
P.W Hemker ◽  
E. A Loeliger

SummaryApplication of the methods of enzyme-kinetic analysis to the results of clotting tests is feasible and can yield useful results. However, the standard methods of enzyme kinetics are not applicable without modifications imposed by the peculiarities of the blood-clotting enzyme system. The influence of the following complicating circumstances is calculated :1. Substrate is not present in excess.2. Only relative measures exist for concentrations of substrate or enzymes.3. Enzymes and substrates are often added together.4. Reagents are not pure.5. Clotting-time is our only measure for clotting-velocity.Formulas are deduced, which makes it possible to recognize the effect of these complications.


Diabetes ◽  
1987 ◽  
Vol 36 (3) ◽  
pp. 261-264 ◽  
Author(s):  
E. Helmerhorst ◽  
G. B. Stokes

1995 ◽  
Vol 32 (4) ◽  
pp. 225-231 ◽  
Author(s):  
Toru HARIGAI ◽  
Shinya KIMURA ◽  
Shuichi KAKURAI
Keyword(s):  

2018 ◽  
Author(s):  
yongson hong ◽  
Kye-Ryong Sin ◽  
Jong-Su Pak ◽  
Chol-Min Pak

<p><b>In this paper, the deficiencies and cause of previous adsorption kinetic models were revealed, new adsorption rate equation has been proposed and its validities were verified by kinetic analysis of various experimental data.</b> <b>This work is a new view on the adsorption kinetics rather than a comment on the previous adsorption papers.</b></p>


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