EINS study of a model protomembrane sub-ns dynamics under high temperature and pressure
A novel membrane architecture is proposed as a model for the first forms of life. The model consists on a bilayer made of short single chain amphiphiles with an intercalating alkane in the membrane midplane. Such model, which takes into account the limitations in molecular complexity in the early Earth environment, could also explain how the first protocells survived to the extreme environmental conditions. The hydrocarbon molecules, in fact, should allow changing the physico-chemical properties of the membrane, allowing to keep the biological functionality at higher temperature and pressure values. SANS studies gave positive results about the model structural characterization, showing that the alkanes intercalate in the membrane and affect its structure. We propose here to focus on the amphiphilic hydrogen dynamics using IN13, to study how this is affected by the alkane inserption. The experiment will allow a more general overview by exploring the combined effects of temperature and pressure on the model membrane.
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MISURACA Loreto; DEME Bruno; LORICCO Josephine; Phil Oger and PETERS Judith. (2020). EINS study of a model protomembrane sub-ns dynamics under high temperature and pressure. Institut Laue-Langevin (ILL) doi:10.5291/ILL-DATA.9-13-828
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