(a) Linear schematic of the human NaV1.7 channel topology showing the mutations S241T, V400M and F1449V. (b) Intra-membrane view of structural model of NaV1.7 channel transmembrane domains. Domain I, lightblue; Domain II, salmon; Domain III, cyan; Domain IV, lime. (c) Cyotsolic view of the structural model of NaV1.7 channel transmembrane domains. Boxed area containing S241, V400 and F1449 residues was enlarged in (e). (d) Close-up intra-membrane view of the area containing V400, S241 and F1449 residues. (e) Close-up cytosolic view of the boxed area of (c). V400, S241 and F1449 were shown as stick and colored red, black, and yellow, respectively.
Waxman