Fig. 3

Crystal structure of Ch-CPN in the open state. a Overall structure of the ADP-bound Ch-CPN. Subunits are labeled as S1–S8 and shown in different colors. The conformation of an inter ring dimer (S1 and S1′) is depicted to calculate the molecular dimension (middle). b A contact area in the intra ring dimer is indicated by a dotted box. c Close-up view of the intra ring contact