Chiral encoding may provide a simple solution to the origin of life

Area of Science:

• Origin of Life Studies
• Prebiotic Chemistry
• Molecular Evolution

Background:

• The emergence of complex molecules from prebiotic conditions is a fundamental unsolved problem in science.
• While evolution explains much of life's development, it necessitates self-replicating molecules capable of information storage, which are difficult to achieve in simple chemical systems.
• The widely accepted RNA-first hypothesis for self-replication faces significant challenges in the context of prebiotic chemical chaos.

Purpose of the Study:

• To propose an alternative to the RNA-first hypothesis for the origin of self-replication.
• To explore undiscovered self-replication mechanisms in simpler chemical systems.
• To investigate information coding via stereochemical configurations and its implications for biological homochirality.

Main Methods:

• Theoretical exploration of alternative self-replication pathways.
• Analysis of information coding through stereochemical configurations in organic polymers.
• Investigation of how stereochemical coding could lead to enantiopurity.

Main Results:

• Identification of potential self-replication mechanisms beyond RNA.
• Demonstration of information coding through the stereochemical configurations of substituents in organic polymers.
• Evidence that this coding system naturally resolves the problem of biological homochirality.

Conclusions:

• Simpler self-replication mechanisms may exist in prebiotic chemistry.
• Stereochemical configurations offer a viable alternative for information coding and replication.
• This model provides a potential solution to the origin of biological homochirality.