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Insertion and translocation of soluble proteins into and across biological membranes are involved in many physiological and pathological processes, but remain poorly understood. Here, we describe the pH-dependent membrane insertion of the diphtheria toxin T domain in lipid bilayers by specular neutron reflectometry and solid-state NMR spectroscopy. We gained unprecedented structural resolution using...
We describe the creation of cell adhesion mediated by cell surface engineering. The Flt3-ligand was fused to a membrane anchor made of the diphtheria toxin translocation domain. The fusion protein was attached to the surface of a cell by an acid pulse. Contact with another cell expressing the receptor Flt3 lead to its activation. This activity involved direct cell–cell contact. A mean force of 20nN...
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