Figure 5From: Calcium adsorption and displacement: characterization of lipid monolayers and their interaction with membrane-active peptides/proteinsCalcium adsorption to lipid monolayers. The saturation values of calcium adsorption traces of lipid monolayers made of LPS or phospholipids are plotted versus the net charge of the respective lipid molecules. Calcium adsorption was measured in a buffer solution containing 5 mM HEPES at pH 7. The net charges were calculated from mass spectrometric data.Back to article page