Figure 4. The transition state of the EIN-HPr complex. Helices 5 and 6 of EIN and helix 1 of HPr in the unphosphorylated complex is superimposed on the transition state. The change in conformation of His189 of EIN and His15 of HPr, as well as the lateral displacement of helices 5 and 6 of EIN is shown (from Garrett et al., 1999).
