Streams and riverbeds are subject to considerable hydromorphological alterations due the interaction of their flow with natural or man-made structures found throughout them, i [...]

Small conductance calcium-gated potassium (SK) channels share an overall topology with voltage-gated potassium (K(v)) channels, but are distinct in that they are gated solely by calcium (Ca(2+)), not voltage. For K(v) channels there is strong evidence for an activation gate at the intracellular end of the pore, which was not revealed by substituted cysteine accessibility of the homologous regio...