Extended Data Fig. 5: Electron density maps for bound guanidinium and methylguanidinium ions.
From: Structural basis for gating pore current in periodic paralysis
a, 2mFo−DFc electron density map (blue mesh) of residues around the methylguanidinium binding site at 1σ. b, Overlay of guanidinium binding site (green) and methylguanidinium binding site (orange). c–d, Simulated annealing map (Fo−Fc) contoured at 3σ for methylguanidinium and guanidinium, respectively.
