The interconversion of two secondary structure types (alpha-helix reversible beta-sheet) induced by external conditions such as pH, temperature, concentration, and solvent could be proved in a new class of amphiphilic peptides (switch peptides) in aqueous solution. The pH-dependent conformational changes were studied by CD spectroscopy. Special attention was given to the investigations of four newly synthesized peptides with similar sequences.
Anne-Florence Raphaëlle Bitbol, Damiano Sgarbossa, Umberto Lupo
Pierre Vandergheynst, Felix Naef, Cédric Gobet, Francesco Craighero, Mohan Vamsi Nallapareddy