Figure 3 - full size

Figure 3.
FIGURE 3. The binding interface of the PIASX-P·SUMO-1 complex. A, stereo view of a ribbon diagram of SUMO-1 (pink) in complex with the PIASX-P peptide (light blue). The side chains of the key interface residues (from which the intermolecular NOEs were observed) from SUMO-1 are shown in deep pink, and the side chains of residues of PIASX-P involved in the interaction are shown in blue. B, a similar view as that shown in A except that SUMO-1 is shown as a surface representation with hydrophobic and aromatic residues indicated in green. C, a similar view as in B with the surface of SUMO-1 color-coded according to the electrostatic potentials. Red to blue corresponds to negative to positive electrostatic potentials. The side chains of residues 1-8 of the peptide are shown with acidic side chains indicated in red, and basic side chains indicated in blue. The side chains of all others residues are indicated in green.