Extended Data Figure 3. Cryo-EM reconstruction of aplysia Slo1 gating ring in the EDTA state.
a, Cryo-EM density map of Slo1 gating ring in the EDTA state from the full channel reconstruction and following focused refinement. The mask used for focused refinement is shown as a grey transparent surface. b, Fourier shell correlation curves for focused refinement of the Slo1 gating ring with overall resolution estimated to be 3.46 Å on the basis of the FSC = 0.143 (dashed line) cut-off criterion.