Figure 2.

(A) Overview of the Kv channels subfamilies. (B) Schematic representation of the tetrameric organization of a Kv channel. A structural folding model of one of the four α subunits is shown on the right. Note that in contrast to the considerable homogeneity in the transmembranal core and the loops linking the transmembrane helices, large variations in the relative size and positioning of the amino and carboxy terminals are found in the different Kv channels. For more explanations, see text.