Electrostatic interactions at charged lipid membranes. Electrostatically induced tilt
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Conformational changes occurring upon membrane binding and subsequent insertion of staphylococcal alpha-toxin were studied using complementary spectroscopic techniques. Experimental conditions were established where binding could be uncoupled from membrane ...
For the first time, the std. free energy change, DG Deg, of a membrane-inserting protein with a leader sequence has been detd. exptl., using M13 procoat protein as an example. The partition coeff. for the distribution of the procoat protein between the aq. ...
Membrane proteins fulfill many central functions in the biological membrane. The insertion process of these proteins and their structure, which are intimately linked to their function, are not yet well understood. As a model we studied three proteins recon ...
A new method is presented for measuring sensitively the interactions between ligands and their membrane-bound receptors in situ by using integrated optics, thus avoiding the need for addnl. labels. Phospholipid bilayers were attached covalently to waveguid ...
The secondary structure of alamethicin in lipid membranes below and above the lipid phase transition temp. Tt is detd. by Raman spectroscopy and CD measurements. In both cases structural data are obtained by fitting the exptl. spectra by a superposition of ...
The effect of melittin on lipid order in dimyristoylphosphatidylcholine bilayers was investigated by Raman spectroscopy and fluorescence anisotropy with diphenylhexatriene as fluorescent probe. In the fluid lipid phase, the Raman results indicated a slight ...
Raman spectroscopy and x-ray diffraction are used to investigate the influence of surface charges on the structure of ionizable lipid membranes of dimyristoylmethylphosphatidic acid. The membrane surface charge d. is regulated by varying the pH of the aq. ...
The conformations of melittin, porin, and lactose permease reconstituted in liposomal membranes were investigated by Raman spectroscopy, and the folding of membrane domains was predicted. These data resulted in consistent models for the insertion of the pr ...
In a recent paper, a new class of synthetic lipids, which self-assemble to form monolayers on gold surfaces, was introduced. The addn. of a monolayer of phospholipids to these layers results in robust supported lipid bilayers designed to reconstitute trans ...
CD and fluorescence were used to study the interaction of the model peptide melittin with dimyristoylphosphatidylcholine (DMPC) bilayer liposomes. Melittin binds tightly to the lipid membrane and undergoes a conformational change from a random to an .apprx ...