Protein interactions with lecithin and CEPHALIN (cas 1405-71-6) monolayers

Add time:09/29/2019    Source:sciencedirect.com

A surface trough has been used to study protein/lipid interactions by a development of the Schulman-Rideal injection technique. From the adsorption isotherms obtained the structure of the complexes has been determined. The lipids used—distearin, dipalmitoyl CEPHALIN (cas 1405-71-6), and distearoyl lecithin—were synthetic materials, and the proteins were bovine plasma albumin and sheep insulin. The results indicated that the first sublayer of adsorbed protein combined with distearin and cephalin through the peptide bonds, probably by means of hydrogen bonding or ion-dipole association. With lecithin, however, the interaction appeared to be ionic. In all cases the indications were that a second layer of native protein was adsorbed.

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