Aspects of fractal kinetics of enzymatic reactions by Monte Carlo simulations

Using Monte Carlo simulations in 3D media we investigate the effect of macromolecular crowding on biochemical reactions following a Michaelis-Menten kinetics. In the system substrate and product particles cannot overlap and the effect of crowders mobility and concentration are examined. The simulati...

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Bibliographic Details
Authors: Pitulice, Laura; Vilaseca i Font, Eudald; Isvoran, Adriana; Garcés, Josep Lluís; Mas i Pujadas, Francesc
Format: Article
Status:Published version
Publication date:2011
Country:España
Institution:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
Repository:Recercat. Dipósit de la Recerca de Catalunya
OAI Identifier:oai:recercat.cat:2445/158877
Online Access:https://hdl.handle.net/2445/158877
Access Level:Open access
Keyword:Mètode de Montecarlo
Mètodes de simulació
Cinètica enzimàtica
Monte Carlo method
Simulation methods
Enzyme kinetics
Description
Summary:Using Monte Carlo simulations in 3D media we investigate the effect of macromolecular crowding on biochemical reactions following a Michaelis-Menten kinetics. In the system substrate and product particles cannot overlap and the effect of crowders mobility and concentration are examined. The simulation data are analyzed in terms of parameters describing the time dependence of the rate coefficient. Our results indicate a fractal like kinetics with different degrees of fractality depending on crowders features. Even though small, when crowders mobility rises kinetics fractality decreases due to enhancement of diffusional movements of the reactants. Instead, increasing the crowders density in the system kinetics fractality presents a smooth growth as less free volume is available for reactants.