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Gene Review

CIPK23  -  CBL-interacting serine/threonine-protein...

Arabidopsis thaliana

Synonyms: ATCIPK23, CBL-interacting protein kinase 23, F12P21.6, F12P21_6, LKS1, ...
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High impact information on CIPK23

  • Earlier genetic analyses revealed three genes encoding two Ca(2+) sensors (CBL1 and CBL9) and their target protein kinase (CIPK23) to be critical for plant growth on low-K media and for stomatal regulation, indicating that these calcium signaling components participate in the low-K response and turgor regulation [1].
  • In this study, we show that the protein kinase CIPK23 interacted with, and phosphorylated, a voltage-gated inward K(+) channel (AKT1) required for K(+) acquisition in Arabidopsis [1].

Physical interactions of CIPK23

  • In support of the conclusion that CBL1 and CBL9 interact with and synergistically serve as upstream regulators of CIPK23, the cbl1 cbl9 double mutant, but not the cbl1 or cbl9 single mutants, exhibit altered phenotypes for stomatal responses and low-potassium sensitivity [2].


  1. A Ca(2)+ signaling pathway regulates a K(+) channel for low-K response in Arabidopsis. Li, L., Kim, B.G., Cheong, Y.H., Pandey, G.K., Luan, S. Proc. Natl. Acad. Sci. U.S.A. (2006) [Pubmed]
  2. Two calcineurin B-like calcium sensors, interacting with protein kinase CIPK23, regulate leaf transpiration and root potassium uptake in Arabidopsis. Cheong, Y.H., Pandey, G.K., Grant, J.J., Batistic, O., Li, L., Kim, B.G., Lee, S.C., Kudla, J., Luan, S. Plant J. (2007) [Pubmed]
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