PoreWalker: A Novel Tool for the Identification and Characterization of Channels in Transmembrane Proteins from Their Three-Dimensional Structure
Figure 8
Superpositions of the selectivity filter 3D-structures of the low-K+ (green/red/blue colour scheme) and high-K+ (white/orange/blue colour scheme) KcsA channels.
(A) the whole filter (C-alpha RMSD = 0.38Å, all atom RMSD = 0.58Å), (B) G77s only, top view (all atom RMSD = 0.33Å), (C) V76s only, top view (all atom RMSD = 0.58Å), (D) T75s only, top view (all atom RMSD = 0.99Å).