A specific two-pore domain potassium channel blocker defines the structure of the TASK-1 open pore. by Streit, A, Netter, M, Kempf, F, Walecki, M, Rinné, S, Bollepalli, M, Preisig-Müller, R, Renigunta, V, Daut, J, Baukrowitz, T, Sansom, MS, Stansfeld, P, Decher, N