Figure 1From: Reduction of the secondary structure topological space through direct estimation of the contact energy formed by the secondary structuresProtein density map and the detected helix skeletons. The density map simulated using protein 1AGW (PDB Id) to 10 Å resolution using EMAN [31, 32]. The helix skeletons (sticks) were detected using Helix Tracer [13].Back to article page