Comparison of the conformation and orientation of alamethicin and melittin in lipid membranes
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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 ...
An ever more complete picture of the organization and function of the endocytic pathway is emerging. New mechanisms, and in particular lipid- based mechanisms that couple membrane dynamics and sorting, are being unraveled. But the final picture is still co ...
The alpha-toxin from Staphylococcus aureus undergoes several conformational changes from the time it is released from the bacterium to the moment it forms a channel in the plasma membrane of its target cell. It is initially a soluble monomer, which undergo ...
While the existence of cholesterol/sphingolipid (raft) membrane domains in the plasma membrane is now supported by strong experimental evidence, the structure of these domains, their size, their dynamics, and their molecular composition remain to be unders ...
The formation of supported lipid layers incorporating promastigote surface protease (PSP), a glycosylphosphatidylinositol-anchored protein, is investigated using surface plasmon resonance. Both hydrophilic and hydrophobic substrates are used for the format ...
The attachment of a tetradecyl chain to the ionophore 18-crown-6 leads to a stronger interaction with a supported lipid monolayer. Some C14-18-crown-6 mols. introduced in the aq. phase are incorporated in the phospholipid membrane. This process is used to ...
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 ...
Proteolytic activation, oligomerization, and membrane insertion are three steps that precede channel formation by the bacterial toxin aerolysin. Using attenuated total reflection Fourier transform infrared spectroscopy (ATR-FTIR) and hydrogen-deuterium exc ...
The F0F1 ATP synthase of chloroplasts was imaged using atomic force microscopy (AFM) in contact mode under physiological conditions. Chloroplast (CF0F1) ATP synthases were reconstituted into liposomes, Liposomes were adsorbed on a mica surface where they s ...
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. ...
