Fig. 4. Comparison of N-MdmX and N-Mdm2 structures in complex with nutlin-3a.
a A representative crystal structure of N-Mdm2 in complex with nutlin-3a (red line). b The structure N-MdmX/nutlin-3a complexes (in purple) are superimposed on those of the N-Mdm2/nutline-3a complexes (in yellow). c Comparison of major side-chain configurations between the F19p53p subsites of N-MdmX and N-Mdm2. d A 2Fo-Fc map contoured at 1.5 σ of a section of the H72 side chain on N-Mdm2 revealing two configurations. e, f Comparison of major side chain configurations in the W23p53p and L26p53p subsites, respectively, between N-MdmX and N-Mdm2.