Figure 2

BioBlender interface. The interface is structured in 9 panels: amino acids list - to select and highlight amino acids in the 3D viewport, chains list - to select different protein chains, proteins list - to select different proteins; select .pdb file - upload from user defined path, or access directly from PDB.org specifying the 4 letter code; import - at the import phase, it is possible to select various parameters, including covalent/Van der Waals radius, include/exclude Hydrogens and others; view - visualization in 3D working space, activation of Game Engine; MLP visualization - Parameters for MLP; EP visualization - parameters for EP; output - export of .pdb files and rendered frames. a: choice of formula and grid spacing; b: contrast and brightness control; c and d: calculation and representation, respectively.