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첨단연성물질 연구단
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Spontaneous chiral symmetry breaking in a random driven chemical system

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Title
Spontaneous chiral symmetry breaking in a random driven chemical system
Author(s)
William D. Piñeros; Tsvi Tlusty
Publication Date
2022-04
Journal
Nature Communications, v.13, no.1
Publisher
Nature Research
Abstract
© 2022, The Author(s).Living systems have evolved to efficiently consume available energy sources using an elaborate circuitry of chemical reactions which, puzzlingly, bear a strict restriction to asymmetric chiral configurations. While autocatalysis is known to promote such chiral symmetry breaking, whether a similar phenomenon may also be induced in a more general class of configurable chemical systems—via energy exploitation—is a sensible yet underappreciated possibility. This work examines this question within a model of randomly generated complex chemical networks. We show that chiral symmetry breaking may occur spontaneously and generically by harnessing energy sources from external environmental drives. Key to this transition are intrinsic fluctuations of achiral-to-chiral reactions and tight matching of system configurations to the environmental drives, which together amplify and sustain diverged enantiomer distributions. These asymmetric states emerge through steep energetic transitions from the corresponding symmetric states and sharply cluster as highly-dissipating states. The results thus demonstrate a generic mechanism in which energetic drives may give rise to homochirality in an otherwise totally symmetrical environment, and from an early-life perspective, might emerge as a competitive, energy-harvesting advantage.
URI
https://pr.ibs.re.kr/handle/8788114/11700
DOI
10.1038/s41467-022-29952-8
ISSN
2041-1723
Appears in Collections:
Center for Soft and Living Matter(첨단연성물질 연구단) > 1. Journal Papers (저널논문)
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