Autocatalytic cycles are rather widespread in nature and in several theoretical models of catalytic reaction networks their emergence is hypothesized to be inevitable when the network is or becomes sufficiently complex. Nevertheless, the emergence of autocatalytic cycles has been never observed in wet laboratory experiments. Here, we present a novel model of catalytic reaction networks with the explicit goal of filling the gap between theoretical predictions and experimental findings. The model is based on previous study of Kauffman, with new features in the introduction of a stochastic algorithm to describe the dynamics and in the possibility to increase the number of elements and reactions according to the dynamical evolution of the system. Furthermore, the introduction of a temporal threshold allows the detection of cycles even in our context of a stochastic model with asynchronous update. In this study, we describe the model and present results concerning the effect on the overall dynamics of varying (a) the average residence time of the elements in the reactor, (b) both the composition of the firing disk and the concentration of the molecules belonging to it, (c) the composition of the incoming flux. © Springer-Verlag 2011.

Filisetti, A., Graudenzi, A., Serra, R., Villani, M., Füchslin, R., Packard, N., et al. (2012). A stochastic model of autocatalytic reaction networks. THEORY IN BIOSCIENCES, 131(2), 85-93 [10.1007/s12064-011-0136-x].

A stochastic model of autocatalytic reaction networks

GRAUDENZI, ALEX
Secondo
;
2012

Abstract

Autocatalytic cycles are rather widespread in nature and in several theoretical models of catalytic reaction networks their emergence is hypothesized to be inevitable when the network is or becomes sufficiently complex. Nevertheless, the emergence of autocatalytic cycles has been never observed in wet laboratory experiments. Here, we present a novel model of catalytic reaction networks with the explicit goal of filling the gap between theoretical predictions and experimental findings. The model is based on previous study of Kauffman, with new features in the introduction of a stochastic algorithm to describe the dynamics and in the possibility to increase the number of elements and reactions according to the dynamical evolution of the system. Furthermore, the introduction of a temporal threshold allows the detection of cycles even in our context of a stochastic model with asynchronous update. In this study, we describe the model and present results concerning the effect on the overall dynamics of varying (a) the average residence time of the elements in the reactor, (b) both the composition of the firing disk and the concentration of the molecules belonging to it, (c) the composition of the incoming flux. © Springer-Verlag 2011.
Articolo in rivista - Articolo scientifico
Autocatalytic sets of molecules; Catalytic reaction networks; Complex systems biology; Origin of life; Catalysis; Computer Simulation; Polymers; Models, Biological; Stochastic Processes; Ecology, Evolution, Behavior and Systematics; Applied Mathematics; Statistics and Probability
English
2012
131
2
85
93
none
Filisetti, A., Graudenzi, A., Serra, R., Villani, M., Füchslin, R., Packard, N., et al. (2012). A stochastic model of autocatalytic reaction networks. THEORY IN BIOSCIENCES, 131(2), 85-93 [10.1007/s12064-011-0136-x].
File in questo prodotto:
Non ci sono file associati a questo prodotto.

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/60606
Citazioni
  • Scopus 27
  • ???jsp.display-item.citation.isi??? 15
Social impact