Figure 3
From: PocketPicker: analysis of ligand binding-sites with shape descriptors
Placement of spheres for a two-dimensional molecule in PASS. A: The entire surface of the molecule is coated with virtual spheres and an initial layer of spheres residing in buried parts of the protein is specified (blue shaded circles). B: Additional layers are attached onto the initial layer in an iterative process and active site points (red disks) are exposed for potential binding pockets.