Article
Phosphorylation of SOS3-LIKE CALCIUM BINDING PROTEIN8 by SOS2 protein kinase stabilizes their protein complex and regulates salt tolerance in Arabidopsis.
The Plant cell - 1 May 2009
Lin Huixin, Yang Yongqing, Quan Ruidang, Mendoza Imelda, Wu Yisheng, Du Wenming, Zhao Shuangshuang, Schumaker Karen S, Pardo José M, Guo Yan
Abstract excerpt
The Salt Overly Sensitive (SOS) pathway plays an important role in the regulation of Na+/K+ ion homeostasis and salt tolerance in Arabidopsis thaliana. Previously, we reported that the calcium binding proteins SOS3 and SOS3-LIKE CALCIUM BINDING PROTEIN8 (SCaBP8) nonredundantly activate the protein kinase SOS2. Here, we show that SOS2 phosphorylates SCaBP8 at its C terminus but does not phosphorylate SOS3. In...
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