Synthetic peptide inhibition.

Inhibition by synthetic peptides Aα (192-204), Aα (196-204), and their analogs of binding of IF-123 to immunoaffinity-purified GE-D (A) and the Aα (192-204) peptide corresponding to peptide #19 (B). Synthetic peptides correspond to Aα (192-204) (○), Aα (196-204) (•), Aα (199-204) (□), Aα (196-203) lacking Leu 204 (▪), Aα (196-205) linked with Ile 205 (Δ) and Aα (196-206) linked with Ile 205-Lys 206 (▴).