Fig. 1.
X-ray co-crystal structure of TAK1-1 (yellow stick-cyan ribbon) (PDB 5J9L) overlaid with TAK1-2 (purple stick-green ribbon) (PDB 5J8I). (A) TAK1-2 covalently binds to Cys174 and (B) hydrogen bonds (blue dashes) extend between the anilinopyrimidine moiety of 1 or 2 and the hinge region of TAK1.