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Article
Sergiy Krasnokutskiy
Laboratory Astrophysics Group of the Max Planck Institute for Astronomy at the University of Jena
Corresponding Author
ORCiD: https://orcid.org/0000-0002-9816-3187
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This work is licensed under a CC BY 4.0 License. Read Full License
Until now, experiments demonstrated the possible formation of relatively small prebiotic molecules under typical space conditions. We demonstrated experimentally that condensation of atomic carbon on the surface of cold solid particles (cosmic dust) leads to the formation of monomeric fragments of polyglycine. These fragments polymerize effectively producing polypeptides. The chemistry involves three of the most common species (CO, C, and NH3) present in star-forming molecular clouds. It proceeds via a novel pathway that skips the stage of amino acids formation in protein synthesis and is effective even at low temperatures without irradiation or presence of water. Therefore, the amount of proteins formed in space through this process could be quite substantial. The delivery of proteins to rocky planets in the habitable zone might be an important element for the origin of life.
Keywords
Prebiotic Molecules, Space Conditions, Atomic Carbon Condensation, Monomeric Fragments of Polyglycine, Polypeptides, Origin of Life
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This is a preprint. It has not completed peer review.
Article
Sergiy Krasnokutskiy
Laboratory Astrophysics Group of the Max Planck Institute for Astronomy at the University of Jena
Corresponding Author
ORCiD: https://orcid.org/0000-0002-9816-3187
Badges
Prescreen
This manuscript passed our Prescreen assessment
Complete author information
Appropriate declaration statements
Potential risks to human health
Prescreen
History
CURRENT STATUS: Posted
Version 1
Posted 23 Feb, 2021
No community comments so far
Metrics
Comments: 0
PDF Downloads: ...
HTML Views: ...
License:
This work is licensed under a CC BY 4.0 License. Read Full License
Until now, experiments demonstrated the possible formation of relatively small prebiotic molecules under typical space conditions. We demonstrated experimentally that condensation of atomic carbon on the surface of cold solid particles (cosmic dust) leads to the formation of monomeric fragments of polyglycine. These fragments polymerize effectively producing polypeptides. The chemistry involves three of the most common species (CO, C, and NH3) present in star-forming molecular clouds. It proceeds via a novel pathway that skips the stage of amino acids formation in protein synthesis and is effective even at low temperatures without irradiation or presence of water. Therefore, the amount of proteins formed in space through this process could be quite substantial. The delivery of proteins to rocky planets in the habitable zone might be an important element for the origin of life.
Figure 1
Figure 2
Figure 3
Figure 4
Figure 5
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