Origins of Life and Evolution of Biospheres

, Volume 39, Issue 5, pp 479–493

Toward Homochiral Protocells in Noncatalytic Peptide Systems

Chirality

DOI: 10.1007/s11084-009-9166-5

Cite this article as:
Gleiser, M. & Walker, S.I. Orig Life Evol Biosph (2009) 39: 479. doi:10.1007/s11084-009-9166-5

Abstract

The activation-polymerization-epimerization-depolymerization (APED) model of Plasson et al. has recently been proposed as a mechanism for the evolution of homochirality on prebiotic Earth. The dynamics of the APED model in two-dimensional spatially-extended systems is investigated for various realistic reaction parameters. It is found that the APED system allows for the formation of isolated homochiral proto-domains surrounded by a racemate. A diffusive slowdown of the APED network induced, for example, through tidal motion or evaporating pools and lagoons leads to the stabilization of homochiral bounded structures as expected in the first self-assembled protocells.

Keywords

Homochirality Prebiotic chemistry Abiogenesis Protometabolism Proto-cells 

Copyright information

© Springer Science+Business Media B.V. 2009

Authors and Affiliations

  1. 1.Department of Physics and AstronomyDartmouth CollegeHanoverUSA

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