Description | Protein involved in the cytokinin signaling pathway (i.e. transport or signal transduction). Cytokinins (i.e. kinetin and zeatin) are defined more by their biological activity (e.g. inducing cell division in tissue culture) rather than by structure. These phytohormones are synthesized in the root apical meristem and transported through the plant in the xylem sap. Cytokinins are involved in several physiological processes such as promoting cell division and chloroplast maturation, regulating cell growth and differentiation, and monitoring nutrient uptake and senescence. Together with auxin, they also regulate the cell cycle and tissue morphogenesis |