Zhuravlev Yu. N., Tuzinkevich A. V., Frisman E. Ya.
В журнале Biophysics (Russian Federation)
Год: 2011 Том: 56 Номер: 1 Страницы: 119-124
An approach to describe the emergence of dynamics of polymerization/depolymerization of some spatially distributed prebiological structures has been analyzed, and two phases of the development of the system have been identified. In the first phase, polymerization of organic monomers occurs under the influence of external factors, and in the second one depolymerization takes place. Both processes are accompanied by "diffusive mixing" of reaction products. The dynamic equations of the system are presented. Numerical examination of the space nonuniform solution of model equations has shown that, in conditions of low stability of uniform space distribution, these solutions resolve into a number of discrete peaks of nonzero density, which are isolated from each other by free space. Such nonuniform distributions are stable when close to the bifurcation point; yet in other conditions, they can lose their stability, which entails a more pronounced nonuniformity of space dynamics. Thus, interaction of polymerization/depolymerization processes results in chaotic self-organization and leads to origination of complex and inhomogeneous (patchy) spatial structures. These structures in physical space can reflect the emergence of the spatial nonuniformity in prebiological associations, while in the distributive space of characters they can correspond to the initial steps of emergence of the first discrete domains fixed in biological evolution.
