A semi-integrated method for the determination of enzyme kinetic parameters and graphical representation of the Michaelis-Menten equation

1984 ◽  
Vol 141 (1) ◽  
pp. 179-183 ◽  
Author(s):  
Ali Naqui ◽  
Britton Chance
1990 ◽  
Vol 55 (5) ◽  
pp. 1351-1365 ◽  
Author(s):  
Vladimír I. Krupyanko

The most frequently occurring incorrect uses of the plots of intercepts, slopes and other coordinates for the determination of constants of enzyme activation Ka and of nontrivial inhibition K(IIi), K(Vi), K(Ii), were analyzed. The correct plots are shown. Calculations of the K(Ii) and K(IIi) constants of nontrivial types of enzyme inhibition using the corrected plots of the intercepts are given.


BIO-PROTOCOL ◽  
2013 ◽  
Vol 3 (14) ◽  
Author(s):  
Jörg Augustin ◽  
Søren Bak

2016 ◽  
Vol 33 (1) ◽  
pp. 87-95 ◽  
Author(s):  
Jan-Hendrik Grosch ◽  
David Wagner ◽  
Niklas Knaup ◽  
Timm Keil ◽  
Antje C. Spieß

2010 ◽  
Vol 35 (3) ◽  
pp. 395-403 ◽  
Author(s):  
Mohammad-Hossein Sorouraddin ◽  
Kaveh Amini ◽  
Abdolhossein Naseri ◽  
Javad Vallipour ◽  
Jalal Hanaee ◽  
...  

1999 ◽  
Vol 27 (2) ◽  
pp. 87-91 ◽  
Author(s):  
Francesco Ranaldi ◽  
Paolo Vanni ◽  
Eugenio Giachetti

Author(s):  
Norazwina Zainol ◽  
Siti Natrah Ismail

Determination of kinetic parameters of enzymes is important in biotechnology research. It is also one of the most challenging processes in methanol production. The activity of enzyme is determined in term of initial rates at various substrate concentrations. The enzymatic hydrolysis of methanol by pectin methyl esterase (PME) enzyme was investigated at 25 °C and pH 9 over the reaction time range from 0 to 90 min. In this study, the parameters of the enzyme's kinetic, KM and Vmax were directly determined using a modified Michaelis-Menten equation by applying the Lineweaver-Burk plots. Besides, nonlinear regression of Michaelis-Menten equation was calculated based on Euler’s and Runge-Kutta 4th order methods by using Solver supplement application. The result of kinetic constant was tested by comparing the experimental data with model predictions. It was found that Euler and Runge-Kutta method was successful in determining the kinetic parameter rather than Lineweaver-Burk plot. The application of the Michaelis-Menten equation describes the enzyme kinetic very well. From the kinetic analysis, it showed the good agreement between the result obtained and the predictions model in the production of methanol using PME enzyme. Copyright © 2019 BCREC Group. All rights reserved 


1991 ◽  
Vol 26 (5) ◽  
pp. 447-453 ◽  
Author(s):  
Russell P. Newton ◽  
Jalal A. Khan ◽  
Dipankar Ghosh ◽  
James I. Langridge ◽  
A. Gareth Brenton ◽  
...  

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