Does Stochasticity Favour Complexity in a Prebiotic Peptide-Micelle System?
| العنوان: | Does Stochasticity Favour Complexity in a Prebiotic Peptide-Micelle System? |
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| المؤلفون: | John Brindley, Rowena Ball |
| المصدر: | Origins of Life and Evolution of Biospheres. 51:259-271 |
| بيانات النشر: | Springer Science and Business Media LLC, 2021. |
| سنة النشر: | 2021 |
| مصطلحات موضوعية: | chemistry.chemical_classification, 0303 health sciences, Chemistry, Substrate (chemistry), Peptide, General Medicine, 010402 general chemistry, Lipids, 01 natural sciences, Redox, Micelle, 0104 chemical sciences, Maxima and minima, 03 medical and health sciences, Prebiotics, Membrane, Space and Planetary Science, Chemical physics, Amphiphile, Peptides, Energy source, Micelles, Ecology, Evolution, Behavior and Systematics, 030304 developmental biology |
| الوصف: | A primordial environment that hosted complex pre- or proto-biochemical activity would have been subject to random fluctuations. A relevant question is then: What might be the optimum variance of such fluctuations, such that net progress could be made towards a living system? Since lipid-based membrane encapsulation was undoubtedly a key step in chemical evolution, we used a peptide-micelle system in simulated experiments where simple micelles and peptide-stabilized micelles compete for the same amphiphilic lipid substrate. As cyclic thermal driver and energy source we used a thermochemical redox oscillator, to which the micelle reactions are coupled thermally through the activation energies. The long-time series averages taken for increasing values of the fluctuation variance show two distinct minima for simple micelles, but are smoothly increasing for complex micelles. This result suggests that the fluctuation variance is an important parameter in developing and perpetuating complexity. We hypothesize that such an environment may be self-selecting for a complex, evolving chemical system to outcompete simple or parasitic molecular structures. |
| تدمد: | 1573-0875 0169-6149 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1aa15c7d350412c5d6f753deca15156b https://doi.org/10.1007/s11084-021-09614-3 |
| حقوق: | CLOSED |
| رقم الأكسشن: | edsair.doi.dedup.....1aa15c7d350412c5d6f753deca15156b |
| قاعدة البيانات: | OpenAIRE |
Find this article in full text from Springer Verlag. | تدمد: | 15730875 01696149 |
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