Figure 11: Overview of the processes controlled by SnRK1 in plants revealed by dynamic phosphoproteomics in the snrk1α1/α2 mutant versus the wild type plants in light and extended night conditions. | Scientific Reports

Figure 11: Overview of the processes controlled by SnRK1 in plants revealed by dynamic phosphoproteomics in the snrk1α1/α2 mutant versus the wild type plants in light and extended night conditions.

From: Quantitative phosphoproteomics reveals the role of the AMPK plant ortholog SnRK1 as a metabolic master regulator under energy deprivation

Figure 11

The most abundant effect in the snrk1α1/α2 mutant in a day-night time course inducing the LES was a hyperphosphorylation of RPS6 which indicated an activated TOR signalling pathway. Typically this pathway is shut down during LES as demonstrated in the wild type phosphoproteome during extended night. A proposed model for SnRK1 regulation of TOR signalling is via interaction and phosphorylation of RAPTOR. Further unexpected effects were observed for chloroplastic phosphoproteins and the crosstalk of cytosol and mitochondria. For detailed discussion see Results and Discussion.

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