Fig. 3

Ligands in the Protein Binding Pocket. A-C. The ABC transporter SBP (in green) binds the ligand allitol (in red) in its binding pocket. The ligand sorbitol (in blue) can be docked in the same binding pocket aligned with the six-carbon backbone of allitol. D. The ligand sorbitol (solid) visualized inside the binding pocket of the protein (translucent mesh) with atoms specified by color (red = Oxygen, blue = Nitrogen, green = Carbon, white = Hydrogen)