Fig. 3

Overall structure of the PcVps75 tetramer. a, b PcVps75∆C-SeMet tetrameric structure. Chain a (orange), chain b (yellow), chain c (green), and chain d (dark green) are shown. c Interior core structure of the PcVps75 tetrameric structure. β1–β3 (orange) and α2–α4 and α6–α8 (green) are shown. The exterior of the core is shown as a surface and colored white. d Dimers I and II are colored orange and green. “Ca” represents a calcium ion in the center of the PcVps75 tetramer