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Updated: May 19, 2026
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Conducting Miller-Urey Experiments
Published on: January 21, 2014
Prebiotic organic microstructures
Marie-Paule Bassez1, Yoshinori Takano, Kensei Kobayashi
1Département Chimie, Université de Strasbourg, 72 route du Rhin, 67400 Illkirch, France. marie-paule.bassez@unistra.fr
Summary
Abiotic synthesis of prebiotic microstructures, including amino acids, occurred through proton irradiation of inorganic compounds. These findings suggest potential origins for early life during Earth's Archaean Eon.
Area of Science:
- Astrobiology
- Geochemistry
- Materials Science
Background:
- Early Earth conditions may have favored the abiotic synthesis of organic molecules.
- Serpentinization processes and cosmic radiation are potential sources of energy and precursors for prebiotic chemistry.
Purpose of the Study:
- To synthesize microstructures under simulated early Earth conditions.
- To investigate the abiotic formation of amino acids and their potential prebiotic significance.
Main Methods:
- Proton irradiation of inorganic compounds (CO, N2, H2O).
- Analysis of synthesized structures using Scanning Electron Microscopy (SEM) and Atomic Force Microscopy (AFM).
- Hydrolysis and enantiomer analysis (D,L-alanine) to confirm abiotic origin.
Main Results:
- Successful synthesis of micro- and sub-micrometer spheres, tubules, and fiber-filament structures.
- Production of diverse proteinaceous and non-proteinaceous amino acids.
- Confirmation of abiotic synthesis of amino acids, specifically D,L-alanine.
Conclusions:
- Laboratory-synthesized prebiotic microstructures resemble those potentially formed during Earth's Archaean Eon.
- Abiotic synthesis of organic molecules is plausible under early Earth conditions, potentially linked to serpentinization and cosmic radiation.
- Findings support hypotheses for the origin of life from inorganic precursors.
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