Experimental challenges in ion channel research: uncovering basic principles of permeation and gating in potassium channels oleh Joao Luis Carvalho-de-Souza, Andrea Saponaro, C. A. Z. Bassetto, Oliver Rauh, Indra Schroeder, Fabio Franciolini, Luigi Catacuzzeno, Francisco Bezanilla, Gerhard Thiel, Anna Moroni