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Inducing Homochirality Through Intermediary Catalytic Species: A Stochastic Approach.

Osmel Martín¹, Yoelsy Leyva², José Suárez-Lezcano³

¹Laboratorio de Ciencia Planetaria. Universidad Central "Marta Abreu" de las Villas, Santa Clara, Cuba.

|August 31, 2023

Summary

This study proposes a novel chiral amplification mechanism using stochastic fluctuations in a semipermeable compartment. The process robustly generates a chiral state, offering insights into biochemical processes.

Keywords:

Chiral amplification Encapsulation Homochirality Origin of life Stochastic modeling

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Development of Heterogeneous Enantioselective Catalysts using Chiral Metal-Organic Frameworks MOFs

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Published on: January 17, 2020

Area of Science:

Chemistry
Biochemistry
Theoretical Chemistry

Background:

Chiral amplification is crucial for life's origins.
Existing models often lack stochasticity or compartment effects.
Understanding chiral symmetry breaking is a fundamental scientific challenge.

Purpose of the Study:

To propose and analyze a new chiral amplification mechanism.
To investigate the role of stochastic fluctuations and compartment dynamics.
To explore potential links to prebiotic chemistry and the origin of homochirality.

Main Methods:

Stochastic modeling of a five-species chemical system.
Simulation of a semipermeable compartment with diffusive coupling.
Analysis of chiral amplification under different environmental conditions (open/closed systems).

Main Results:

A robust chiral state can be achieved through stochastic fluctuations of intermediate species.
The mechanism is effective in both open and closed compartment systems.
Increased non-catalytic chiral species production negatively affects homochirality.

Conclusions:

The proposed stochastic chiral amplification mechanism offers a plausible pathway for homochirality.
Compartment effects and stochasticity are key factors in chiral symmetry breaking.
This model provides a framework for understanding the origin of chirality in biological systems.