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Award ID contains: 2137154

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  1. ; ; ; ; ; ; ; ; ; ; et al (, Biochimica et Biophysica Acta (BBA) - Biomembranes)
    Cell membranes are responsible for a range of biological processes that require interactions between lipids and proteins. While the effects of lipids on proteins are becoming better understood, our knowledge of how protein conformational changes influence membrane dynamics remains rudimentary. Here, we performed experiments and computer simulations to study the dynamic response of a lipid membrane to changes in the conformational state of pH-low insertion peptide (pHLIP), which transitions from a surface-associated (SA) state at neutral or basic pH to a transmembrane (TM) α-helix under acidic conditions. Our results show that TM-pHLIP significantly slows down membrane thickness fluctuations due to an increase in effective membrane viscosity. Our findings suggest a possible membrane regulatory mechanism, where the TM helix affects lipid chain conformations, and subsequently alters membrane fluctuations and viscosity. 
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  2. ; ; ; ; (, Advances in experimental medicine and biology)
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  3. ; ; ; (, Biophysical Journal)
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  4. ; ; ; (, The Journal of Membrane Biology)
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  5. ; ; ; ; (, Biophysical Journal)
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