While phosphorylation of TOC1 protein stabilizes interactions with ZTL, it also increases TOC1's affinity for PRR3, which ultimately protects TOC1 from ZTL-mediated degradation and results in an enhanced amplitude of TOC1 cycling.
Phosphorylation of TOC1 protein stabilizes interactions with ZTL. It also increases TOC1's affinity for PRR3-mediated degradation and results in an enhanced amplitude of TOC1 cycling. TOC1's affinity for PRR3 ultimately protects TOC1 from ZTL.