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Three-dimensional structure of peptide C8 and its inactive Ala analogue C8W→A776. Shown are the superpositions of the best 20 structures of peptides C8 (a) and C8W→A776 (b) obtained from DYANA structure calculations and following minimization using the SANDER module of AMBER software (version 5.0). The backbones are displayed in violet for C8 and in blue for C8W→A776. The side chains of Trp residues are shown (green) as well as the side chains of the Ala-776 of C8W→A776.
