Abiotic Emergence of Biological Homochirality

Ribo, J. M., Crusats, J., EL Hachemi, Z., Hocheberg, D., Moyano, A. 2017. Abiotic Emergence of Biological Homochirality. Avances in Asymmetric Autocatalysis and Related Topics, 299-316, DOI: 10.1016/B978-0-12-812824-4.00016-2

The different types of network leading to spontaneous mirror-symmetry breaking (SMSB) are briefly discussed, as well as the specific characteristics of the thermodynamic systems that allow the achievement of a final chiral stationary state. The recent SMSB model based in enantioselective autocatalysis coupled to enantioselective cross-catalysis aid (hypercyclic replicators) is specifically discussed. Such a model suggests that the RNA-world models could comprise simultaneous emergence of enantioslective replicators and SMSB. The selection of one of two final chiral signs in SMSB in abiotic scenarios is proposed as a primordial Darwinian selection.

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