Characterization of supported lipid bilayers incorporating the phosphoinositides phosphatidylinositol 4,5-biphosphate and phosphoinositol-3,4,5-triphosphate by complementary techniques
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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. ...
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 ...
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. ...
Monomolecular layers of lipid extracts of microsomal, mitochondrial outer and inner membranes, and pure lipid species have been used to measure their interaction with apo- and holocytochrome c. Large differences were observed both with respect to the natur ...
American Society for Biochemistry and Molecular Biology1989
A new strategy for the reversible formation of supported lipid bilayers is introduced. It uses an extension of immobilized metal ion affinity chromatog. technol., which depends on the reversible formation of complexes between metal ion binding chelator gro ...
Time-resolved fluorescence anisotropy of the single tryptophan (Trp) residue of melittin was measured to assess the orientational fluctuations of the protein in lipid membranes above and below the lipid phase transition temp. (Tt). In phospholipid vesicles ...
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 ...
Rhodopsin-transducin coupling was used as an assay to investigate a laterally patterned membrane reconstituted with a receptor and its G protein. It served as a model system to show the feasibility to immobilize G protein-coupled receptors on solid support ...
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 ...
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 ...
