The docked ligands in the modeled {P,S}197 AHAS enzymes fit in the 6U9H structure inside the tunnel close to the 1 st monomer (containing amino acid 197). The binding in the approximation of one monomer instead of a total modeled dimer interface has only small corrections to the protein-ligand interaction if the interface is not thin. As in a box-like room, the modeled and docked CS ligands in the next sections are upon one wall and some distance from the other walls;