Article
The S1-S2 linker determines the distinct pH sensitivity between ZmK2.1 and KAT1.
The Plant journal : for cell and molecular biology - 1 Mar 2016
Wang Li, Yang Shun-Ying, Guo Man-Yuan, Huang Ya-Nan, Sentenac Hervé, Véry Anne-Aliénor, Su Yan-Hua
Abstract excerpt
Efficient stomatal opening requires activation of KAT-type K(+) channels, which mediate K(+) influx into guard cells. Most KAT-type channels are functionally facilitated by extracellular acidification. However, despite sequence and structural homologies, the maize counterpart of Arabidopsis KAT1 (ZmK2.1) is resistant to pH activation. To understand the structural determinant that results in the differential pH...
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