Dear Norbert Volkmar ,

Not sure about the most recent developments and possibilities in these type of approaches but the following papers are nice examples of the so-called lipid transfer method:

Kusters, R., Dowhan, W., & De Kruijff, B. (1991). Negatively charged phospholipids restore prePhoE translocation across phosphatidylglycerol-depleted Escherichia coli inner membranes. Journal of Biological Chemistry, 266(14), 8659-8662.

And

Kusters, R., Breukink, E., Gallusser, A., Kuhn, A., & De Kruijff, B. (1994). A dual role for phosphatidylglycerol in protein translocation across the Escherichia coli inner membrane. Journal of biological chemistry, 269(2), 1560-1563.

Hope this helps you a bit further.

Best regards.