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Updated: May 31, 2025

In vitro Assembly of Semi-artificial Molecular Machine and its Use for Detection of DNA Damage
Published on: January 11, 2012
Life sets off a cascade of machines
Tsvi Tlusty1, Albert Libchaber2
1Department of Physics, Ulsan National Institute of Science and Technology, Ulsan 44919, Korea.
This study introduces a new framework viewing life as a double cascade of machines building machines, from atomic scales to the biosphere. This model integrates micro and macro perspectives, meeting at the scale of microbial cells.
Area of Science:
- Theoretical Biology
- Systems Biology
- Origin of Life Studies
Background:
- Life exists across vast scales, from subatomic particles to the entire biosphere.
- Seventeenth-century insights into infinity inspired a new perspective on life's organization.
- Previous models have not fully integrated micro and macro scales of biological organization.
Purpose of the Study:
- To propose a novel language for describing life as an infinite double cascade of machines.
- To integrate micro-level (Leibnizian) and macro-level (biosphere) organizational scales.
- To explore the evolutionary emergence of this double cascade system.
Main Methods:
- Conceptual framework development based on machine-making-machine analogy.
- Analysis of micro-cascade (cell to atomic scale) and macro-cascade (cell to biosphere scale).
- Identification of critical scale convergence point (microbial cell size and timescale).
Main Results:
- Life is conceptualized as a dual cascade: a micro-cascade (sub-machines to cell) and a macro-cascade (cells to biosphere).
- These cascades converge at the scale of microbial cells (1 micron, 10^3 s).
- A speculative model for the evolution of this double cascade from a self-replicating machine is presented.
Conclusions:
- The proposed double cascade language offers a unified view of life's organization across scales.
- The convergence point at microbial cell scales is critical for integrating the micro and macro cascades.
- Understanding this framework may shed light on the fundamental principles of life's emergence and evolution.
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