The aptamer-protein-A-complexes docked before and after GROMACS simulations. a. The original pre-GROMACS complex (OrigD1). b. The mutated pre-GROMACS complex (MutD1). c. The original post-GROMACS complex (OrigD2). d. The mutated post-GROMACS complex (MutD2) (KiNG, version 2.24).