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A dramatic change in the interaction of Cu(II) with bio-peptides promoted by SDS--a model for complex formation on a
W Bal1, H Kozlowski, M Lisowski
1Institute of Chemistry, University of Wroclaw, Poland.
Journal of Inorganic Biochemistry
|July 1, 1994
Abstract:
The extent of complex formation between Cu(II) and many biologically active oligopeptides has been shown to change significantly in the presence of SDS micelles, a recognized model for cell lipid membranes. Protonation constants of peptides can be increased by up to 2 log unit, especially when they contain hydrophobic side chains. Metal complex formation is generally less extensive and the conformations of peptides can be altered dramatically when compared to those in simple aqueous solution.