Structure of the 14-3-3ζ/phospho-β2 complex. (A) Overall structure of the 14-3-3ζ dimer and 2 peptides. The protein is shown as a surface representation colored according to surface charge as implemented in PyMOL. (B) The difference electron density map (F_o − F_c) of the β2 phosphopeptide calculated from the final model without the peptide, shown at σ = 2. The α-helices E and H of 14-3-3 are located below and above the peptide, respectively, and shown as a ribbon diagram. (C) Same as panel B, but the final model of the peptide is also shown. (D) The same as panel C, but shown from above.