Reproduction of a Protocell by Replication of Minority Molecule in Catalytic Reaction Network

Details Reproduction of a Protocell by Replication of Minority Molecule in Catalytic Reaction Network Reproduction of a Protocell by Replication of Minority Molecule in Catalytic Reaction Network

2010-05-07

arxiv.org/abs/1005.1142v1

Biology

Quantitative Biology

Cell Behavior

13 pages, 7 figures, submitted for publication

Scientific paper

For understanding the origin of life, it is essential to explain the development of a compartmentalized structure, which undergoes growth and division, from a set of chemical reactions. In this study, a hypercycle with two chemicals that mutually catalyze each other is considered in order to show that the reproduction of a protocell with a growth-division process naturally occurs when the replication speed of one chemical is considerably slower than that of the other chemical. It is observed that the protocell divides after a minority molecule is replicated at a slow synthesis rate, and thus, a synchrony between the reproduction of a cell and molecule replication is achieved. The robustness of such protocells against the invasion of parasitic molecules is also demonstrated.

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