Detecting autocatalytic, self-sustaining sets in chemical reaction systems
نویسندگان
چکیده
منابع مشابه
Detecting autocatalytic, self-sustaining sets in chemical reaction systems.
The ability of systems of molecular reactions to be simultaneously autocatalylic and sustained by some ambient 'food source' of simple molecules may have been an essential step in the origin of life. In this paper we first describe a polynomial-time algorithm that determines whether any given set of molecules, reactions and catalysations contains a subsystem that is both autocatalytic and able ...
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Given any finite and closed chemical reaction system, it is possible to efficiently determine whether or not it contains a ‘self-sustaining and collectively autocatalytic’ subset of reactions, and to find such subsets when they exist. However, for systems that are potentially open-ended (for example, when no prescribed upper bound is placed on the complexity or size/length of molecules types), ...
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The formation of a self-sustaining autocatalytic chemical network is a necessary but not sufficient condition for the origin of life. The question of whether such a network could form "by chance" within a sufficiently complex suite of molecules and reactions is one that we have investigated for a simple chemical reaction model based on polymer ligation and cleavage. In this paper, we extend thi...
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Self-sustaining autocatalytic networks play a central role in living systems, from metabolism at the origin of life, simple RNA networks, and the modern cell, to ecology and cognition. A collectively autocatalytic network that can be sustained from an ambient food set is also referred to more formally as a ‘Reflexively Autocatalytic F-generated’ (RAF) set. In this paper, we first investigate a ...
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Motivation and Background The origin of life (OoL) on earth is still in search of a satisfactory explanation. The field is dominated by many facets and partial explanations. Facets include frequency of planetary systems, climatology of early earth, chirality in naturally occurring compounds, abiotic production of molecules, etc. Partial explanations include the naturally occurring self-reproduc...
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ژورنال
عنوان ژورنال: Journal of Theoretical Biology
سال: 2004
ISSN: 0022-5193
DOI: 10.1016/j.jtbi.2003.11.020