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Structural comparison of p53 and p73. (a) Superposition of the p53 (PDB 2OCJ) and p73 structures in the absence of DNA colored by Cα RMSD. Residues where the RMSD is higher than the scale maximum are colored white. (b) Comparison of the electrostatic surface potentials of the two proteins as calculated using PyMOL and APBS.28 The H1 helix and R268 are labeled for orientation.
