Space Sciences

Emergent ribozyme behaviors in oxychlorine brines indicate a unique niche for molecular evolution on Mars

T. G. Hoog, M. R. Pawlak, et al.

This captivating study reveals how perchlorate brines on Mars could provide the perfect environment for RNA folding and catalysis, potentially supporting life in extreme conditions. Conducted by Tanner G. Hoog, Matthew R. Pawlak, Nathaniel J. Gauth, Gloria C. Baxter, Thomas A. Bethel, Katarzyna P. Adamala, and Aaron E. Engelhart, it emphasizes the unique suitability of nucleic acids to Martian environments, hinting at the possibilities of biomolecular evolution.

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Abstract

Mars is a potential host for life, with oxychlorine species, particularly perchlorate, being ubiquitous. Perchlorate's toxicity poses challenges, but its deliquescence forms brines potentially supporting life. This study demonstrates that perchlorate brines support RNA folding and catalysis while negatively affecting protein enzymes. Perchlorate and other oxychlorines enable ribozyme functions, including regulatory behavior and ribozyme-catalyzed chlorination. Nucleic acids appear uniquely suited to Martian environments, suggesting oxychlorine brines could provide a niche for biomolecular evolution.

Publisher

Nature Communications

Published On

May 20, 2024

Authors

Tanner G. Hoog, Matthew R. Pawlak, Nathaniel J. Gauth, Gloria C. Baxter, Thomas A. Bethel, Katarzyna P. Adamala, Aaron E. Engelhart

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