Screenshots of GIANT consisting of the two parts: complex analyzer (A-E) and pattern viewer (F-I). (A) Query input box. (B) 3D structure viewer for a query protein–ligand complex. (C) List of interacting residues. (D) List of interacting ligand atoms. (E) List of interactions. (F) 3D viewer for spatial distribution of interaction patterns. The red contour is the interaction pattern that is specified in Complex Analyzer by users. (G) List of interaction patterns. The row shown in red corresponds to the red contour in the 3D viewer. (H) List of ligands recognized with a user-specified interaction pattern. (I) List of protein–ligand complexes using a user-specified interaction pattern.