AHP2 functions as a two-component phosphorelay mediator between cytokinin sensor histidine kinases and response regulators (B-type ARRs). It plays a critical role in propagating cytokinin signal transduction through the multistep His-to-Asp phosphorelay.
Gene References Into Functions
AHP2 is localized in both the nucleus and cytoplasm, and is involved in light-induced stomata opening. The AHP2 gene is expressed in guard cells. PMID: 24758561
The three-dimensional structure of AHP2 has been determined. PMID: 23385758
Arabidopsis AHP2, AHP3, and AHP5 histidine phosphotransfer proteins function as redundant negative regulators of drought stress response. PMID: 23487796
Research findings indicate that the presence of Ahp2 protein is essential for alignment stabilization and synapsis of most chromosome regions but is not required for the initial close juxtaposition of homologous chromosomes. PMID: 20358378