Figure 3.

Contact maps highlighting the regions of interaction in the various instances of the longitudinal actin interface visualized in crystal structures and filament models. Interfaces from eight different models are shown, labeled A–H as in Tables 3 ▶ and 4 ▶. Regions of close contact are shown in red. Residues belonging to the top region of the lower monomer are indicated along the left side of each map, while residues belonging to the bottom region of the top monomer are indicated along the top. The six models from crystal structures (A–F) show especially strong similarities. The color map shown divides the range of contact distances between 4 and 12 Å into 11 bins, with a uniform spacing in the squared distance.