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A peptide representing a putative fusion domain of fertilin, a sperm surface protein involved in sperm-egg fusion was synthesized. Its interaction with model membranes was characterized and compared with that of a synthetic peptide representing the fusion peptide of HIV-2rod gp41. The fertilin fusion peptide interaction with lipid vesicles is dependent upon the presence of negatively charged lipids...
Entry of Shigella flexneri into epithelial cells and lysis of the phagosome involve the secreted IpaA–D proteins. A complex containing IpaC and IpaB is able to promote uptake of inert particles by epithelial cells. This suggested that Ipa proteins, either individually or as a complex, might interact with the cell membrane. We have purified IpaC and demonstrated its interaction with lipid vesicles...
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