Random autocatalytic networks

Elchanan Mossel; Mike Steel

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arXiv · q-bio/0406044

Random autocatalytic networks

Elchanan Mossel·Mike Steel

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Abstract

We determine conditions under which a random biochemical system is likely to contain a subsystem that is both autocatalytic and able to survive on some ambient `food' source. Such systems have previously been investigated for their relevance to origin-of-life models. In this paper we extend earlier work, by finding precisely the order of catalysation required for the emergence of such self-sustaining autocatalytic networks. This answers questions raised in earlier papers, yet also allows for a more general class of models. We also show that a recently-described polynomial time algorithm for determining whether a catalytic reaction system contains an autocatalytic, self-sustaining subsystem is unlikely to adapt to allow inhibitory catalysation - in this case we show that the associated decision problem is NP-complete.

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Elchanan Mossel, Mike Steel. 2004-10-22. Random autocatalytic networks. https://arxiv.org/abs/q-bio/0406044

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