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Dissecting a protein unfolding process into individual steps can provide valuable information on the forces that maintain the integrity of the folded structure. Solvation of the protein core determines stability, but it is not clear when such solvation occurs during unfolding. In this study, far-UV circular dichroism measurements suggest a simplistic two-state view of the unfolding of barstar, but...
Though polyethylenimine (PEI) is one of the most efficient nonviral vectors, one concern is the significant cytotoxicity of free PEI that represents about 80% of the PEI molecules in PEI/DNA mixtures used for transfection. In this respect, the aim of this work was to further investigate the intracellular fate of PEI during transfection of L929 fibroblasts. To this end, we analyzed by fluorescence...
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