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  • Title: Cytochrome c dissolved in 1-allyl-3-methylimidazolium chloride type ionic liquid undergoes a quasi-reversible redox reaction up to 140°C.
    Author: Tamura K, Nakamura N, Ohno H.
    Journal: Biotechnol Bioeng; 2012 Mar; 109(3):729-35. PubMed ID: 22038699.
    Abstract:
    Solubility of cytochrome c, a typical heme protein, in a various ionic liquids has been analyzed. The solubility has been discussed with polarity parameters of the ionic liquids. Both hydrogen bond basicity and dipolarity/polarizability of the ionic liquids were confirmed to be influential factors to control the solubilization of cytochrome c. Polar ionic liquids such as 1-butyl-3-methylimidazolium chloride and 1-allyl-3-methylimidazolium chloride solubilized cytochrome c at 80°C, and the dissolved cytochrome c was found to keep its redox activity in these ionic liquids. The redox response of the dissolved cytochrome c was detected in 1-allyl-3-methylimidazolium chloride up to 140°C.
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