Competition, cooperation, and mutation: improving a synthetic replicator by light irradiation

Area of Science:

• Molecular biology
• Synthetic chemistry
• Evolutionary systems

Background:

• Evolution requires replication and mutation.
• Self-replicating molecules (replicators) are key to understanding molecular evolution.
• Synthetic structures offer a platform to study these phenomena.

Purpose of the Study:

• To investigate molecular evolution using synthetic replicators.
• To demonstrate selection and evolution at the molecular level.
• To create synthetic molecules that compete and exhibit inheritable change.

Main Methods:

• Synthesized two molecules with mutual catalytic activity.
• Designed one replicator with a photochemically active group.
• Irradiated the photoreactive replicator to induce change.

Main Results:

• Observed competition and inheritable change in synthetic molecules.
• Photochemical cleavage enhanced the replication efficiency of one molecule.
• The modified replicator outcompeted the original, consuming system resources.

Conclusions:

• Synthetic molecules can exhibit key evolutionary dynamics like selection and competition.
• Photochemical modification can drive adaptation and dominance in replicator systems.
• This work provides a model for studying the fundamental principles of molecular evolution.