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Proposed model for the interactions in the homodimeric antiparallel coiled coil of peptide B. Attractive and repulsive electrostatic interactions are represented by green and red arrows, respectively. Hydrophobic interactions are represented by blue arrows. Dashed arrows represent the new interactions added to the original model of Fig. 1 b. The italic letters indicate the position of each amino acid in the heptad, and the small capital letters represent the name of the residue.
