Figure 3 - full size

Figure 3. FIGURE 3. Superimposition of different MthK RCK structures. A, superimposition of two P2[1] crystal structures with (red) and without (black) Ca^2+. B, superimposition of the gating ring-forming RCK (black) with the RCK from the P2[1] crystal (red). C, superimposition of the gating ring-forming RCK (black) with RCK from the R32 crystal (red).