Autocatalytic sets and chemical organizations: modeling self-sustaining reaction networks at the origin of life
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 ...
متن کاملAutocatalytic Sets and the Origin of Life
The origin of life is one of the most fundamental, but also one of the most difficult problems in science. Despite differences between various proposed scenarios, one common element seems to be the emergence of an autocatalytic set or cycle at some stage. However, there is still disagreement as to how likely it is that such self-sustaining sets could arise “spontaneously”. This disagreement is ...
متن کاملSelf-sustaining autocatalytic networks within open-ended reaction systems
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), ...
متن کاملTractable models of self-sustaining autocatalytic networks
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 ...
متن کاملLack of evolvability in self-sustaining autocatalytic networks constraints metabolism-first scenarios for the origin of life.
A basic property of life is its capacity to experience Darwinian evolution. The replicator concept is at the core of genetics-first theories of the origin of life, which suggest that self-replicating oligonucleotides or their similar ancestors may have been the first "living" systems and may have led to the evolution of an RNA world. But problems with the nonenzymatic synthesis of biopolymers a...
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ژورنال
عنوان ژورنال: New Journal of Physics
سال: 2018
ISSN: 1367-2630
DOI: 10.1088/1367-2630/aa9fcd