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  • Title: In vitro interactions of opioid peptides with phospholipids. IV. Methionine enkephalin versus leucine enkephalin.
    Author: D'Alagni M, Gullá P, Roda LG, Roscetti G.
    Journal: Int J Pept Protein Res; 1990 Apr; 35(4):328-35. PubMed ID: 2345055.
    Abstract:
    The interaction of methionine and leucine enkephalin with phosphatidylserine and phosphatidylcholine was studied by optical spectroscopy techniques. The data reported indicate that with both peptides the binding is controlled by ionic parameters. They also indicate that the differences in the binding behavior of the two peptides induced by changing these parameters are minor. Non-ionic interactions are also important in the binding phenomena, but the above observations hold in this case as well. Finally, the tridimensional structure of both enkephalins appears to be modified in the presence of phospholipids. Moreover, the changes induced by these lipids appear to differ from one peptide to the other.
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