Article
Outer pore residues control the H(+) and K(+) sensitivity of the Arabidopsis potassium channel AKT3.
The Plant cell - 1 Aug 2002
Geiger Dietmar, Becker Dirk, Lacombe Benoit, Hedrich Rainer
Abstract excerpt
The Arabidopsis phloem channel AKT3 is the founder of a subfamily of shaker-like plant potassium channels characterized by weak rectification, Ca(2+) block, proton inhibition, and, as shown in this study, K(+) sensitivity. In contrast to inward-rectifying, acid-activated K(+) channels of the KAT1 family, extracellular acidification decreases AKT3 currents at the macroscopic and single-channel levels. Here, we...
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