Asymptotic expansions in enzyme reactions with high enzyme concentrations
โ Scribed by Alberto Maria Bersani; Guido Dell'Acqua
- Publisher
- John Wiley and Sons
- Year
- 2011
- Tongue
- English
- Weight
- 540 KB
- Volume
- 34
- Category
- Article
- ISSN
- 0170-4214
- DOI
- 10.1002/mma.1495
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โฆ Synopsis
Communicated by Jacek Banasiak
In this paper, we find a new asymptotic expansion valid in enzymatic reactions, where the total amount of enzyme exceeds greatly the total amount of substrate. In such a case, it is well known that the Michaelis-Menten approximation is no longer valid; therefore our asymptotic expansion, which improves known results, is a new tool to approximate in a closed form the concentrations of the reactants in the presence of an enzyme excess.
๐ SIMILAR VOLUMES
The cellular concentration of enzymes of some major metabolic pathways, such as glycolysis, can approach millimolarity. This concentration of enzyme can catalyze in vitro rates which are 100-fold higher than maximum pathway flux. In an attempt to understand the need for such high enzyme concentratio
oligomers -between 5000 and 1000 Da, and to assess the possibility of a more controlled depolymerisation, by improving the polydispersity index (PDI) from an acid and alkaline hydrolysis on previous studies. We worked with three kinds of enzymes, two of them commercially available -lipases and este