SnRK1-triggered switch of bZIP63 dimerization mediates the low-energy response in plants. Mair, A., Pedrotti, L., Wurzinger, B., Anrather, D., Simeunovic, A., Weiste, C., Valerio, C., Dietrich, K., Kirchler, T., Nagele, T., Vicente Carbajosa, J., Hanson, J., Baena-Gonzalez, E., Chaban, C., Weckwerth, W., Droge-Laser, W., & Teige, M. Elife, 4:e05828, August, 2015. Edition: 2015/08/12![SnRK1-triggered switch of bZIP63 dimerization mediates the low-energy response in plants [link]](https://bibbase.org/img/filetypes/link.svg "link")
Paper doi abstract bibtex Metabolic adjustment to changing environmental conditions, particularly balancing of growth and defense responses, is crucial for all organisms to survive. The evolutionary conserved AMPK/Snf1/SnRK1 kinases are well-known metabolic master regulators in the low-energy response in animals, yeast and plants. They act at two different levels: by modulating the activity of key metabolic enzymes, and by massive transcriptional reprogramming. While the first part is well established, the latter function is only partially understood in animals and not at all in plants. Here we identified the Arabidopsis transcription factor bZIP63 as key regulator of the starvation response and direct target of the SnRK1 kinase. Phosphorylation of bZIP63 by SnRK1 changed its dimerization preference, thereby affecting target gene expression and ultimately primary metabolism. A bzip63 knock-out mutant exhibited starvation-related phenotypes, which could be functionally complemented by wild type bZIP63, but not by a version harboring point mutations in the identified SnRK1 target sites.
@article{mair_snrk1-triggered_2015,
title = {{SnRK1}-triggered switch of {bZIP63} dimerization mediates the low-energy response in plants},
volume = {4},
issn = {2050-084X (Electronic) 2050-084X (Linking)},
url = {https://www.ncbi.nlm.nih.gov/pubmed/26263501},
doi = {10.7554/eLife.05828},
abstract = {Metabolic adjustment to changing environmental conditions, particularly balancing of growth and defense responses, is crucial for all organisms to survive. The evolutionary conserved AMPK/Snf1/SnRK1 kinases are well-known metabolic master regulators in the low-energy response in animals, yeast and plants. They act at two different levels: by modulating the activity of key metabolic enzymes, and by massive transcriptional reprogramming. While the first part is well established, the latter function is only partially understood in animals and not at all in plants. Here we identified the Arabidopsis transcription factor bZIP63 as key regulator of the starvation response and direct target of the SnRK1 kinase. Phosphorylation of bZIP63 by SnRK1 changed its dimerization preference, thereby affecting target gene expression and ultimately primary metabolism. A bzip63 knock-out mutant exhibited starvation-related phenotypes, which could be functionally complemented by wild type bZIP63, but not by a version harboring point mutations in the identified SnRK1 target sites.},
language = {en},
urldate = {2021-06-07},
journal = {Elife},
author = {Mair, A. and Pedrotti, L. and Wurzinger, B. and Anrather, D. and Simeunovic, A. and Weiste, C. and Valerio, C. and Dietrich, K. and Kirchler, T. and Nagele, T. and Vicente Carbajosa, J. and Hanson, J. and Baena-Gonzalez, E. and Chaban, C. and Weckwerth, W. and Droge-Laser, W. and Teige, M.},
month = aug,
year = {2015},
note = {Edition: 2015/08/12},
keywords = {*Gene Expression Regulation, Plant, *Protein Multimerization, Adaptation, Physiological, Arabidopsis Proteins/*metabolism, Arabidopsis/*genetics/metabolism, Basic-Leucine Zipper Transcription Factors/deficiency/*metabolism, Gene Knockout Techniques, Genetic Complementation Test, Phosphorylation, Protein Processing, Post-Translational, Protein-Serine-Threonine Kinases/*metabolism, SnRK1 kinase, arabidopsis, bZIP transcription factor, cell biology, metabolic reprogramming, plant biology},
pages = {e05828},
}
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