Fig. 7.

Ligand interaction map of the predicted binding mode of A) 32R-isomer protonated, B) 31R-isomer protonated, C) 31S-isomer deprotonated, D) 32S-isomer protonated, E) 33R-isomer protonated, F) BI-D1870 S-isomer protonated, G) BI-D1870 R-isomer protonated, H) 44 protonated/deprotonated, I) 28R-isomer protonated, and J) 28S-isomer protonated in the ATP-binding site of the RSK2 NTKD, where red residues are charged negative, purple residues are charged positive, green residues are hydrophobic, and blue residues are polar, magenta arrows indicate H-bonds, violet lines indicate slat bridges, and gray spheres represent areas of solvent exposure.