Abstract
As an investigation into the feasibility of using enzymatic systems on Mars, the continued redox functionality of a model redox protein, horse heart cytochrome c was studied in a solvent-free matrix composed of a conductive form of polyaniline. Electrochemical Impedance Spectroscopy was used to study the system under simulated Martian conditions of -70 degrees Celsius, pressures under 800 microns, and a 95% carbon dioxide atmosphere, the most likely of the unavoidable Martian conditions to prove deleterious to protein functioning. Methods were found to insure continued electron transfer with the protein. Problems and solutions for working with protein systems under these conditions were discussed, as were recommendations for protecting other protein systems in the same or similar environments.
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