FIGURE 3.
Cap2_DAEA mutant retains a trimeric assembly in crystal structure. A, Cap2_DAEA mutant surprisingly exists as a trimer. Shown is a side view of the superimposed structures of WT hCap_CRD (green), zCap2_CRD (blue), and DAEA mutant (yellow). B and D, zoomed in view of the calcium-binding region of hCap2_CRD and Cap2_DAEA, respectively. The 2Fo − Fc density map is contoured at the 1.5 σ level. C and E, the superimposed structures of zCap2_CRD and Cap2_DAEA with that of wild-type hCap2_CRD.