Population (in %) of intramolecular (upper) and intermolecular salt bridges formed in Aβ42 WT and S8C dimers. The salt-bridge distances are calculated between atoms CG (in Asp1, Asp7, or Asp23) or CD (in Glu3, Glu11, or Glu22) and atoms NH2 (in Arg5) or NZ (in Lys16 or Lys28). The notation (ni − pj) or (pi − nj) (i,j = 1,2) stands for the salt bridges between negative charged residues (Asp1, Glu3, Asp7, Glu11, Glu22, and Asp23) and positive charged residues (Arg5, Lys16, and Lys28) or vice versa. The error bars are at most of 3% using three independent time windows.