Differential regulation of calcium-activated plant kinases in Arabidopsis thaliana
The decoding of calcium signals by plant calcium-dependent kinases (CPKs) is not fully understood yet. Based on kinetic in vitro measurements of the activity of several CPK proteins, their individual activity profile was modeled and coupled to cytosolic calcium concentration changes from in vivo mea...
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| Main Authors: | , , , , , , , |
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| Format: | Article (Journal) |
| Language: | English |
| Published: |
September 2025
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| In: |
The plant journal
Year: 2025, Volume: 123, Issue: 5, Pages: 1-17 |
| ISSN: | 1365-313X |
| DOI: | 10.1111/tpj.70413 |
| Online Access: | Verlag, kostenfrei, Volltext: https://doi.org/10.1111/tpj.70413 Verlag, kostenfrei, Volltext: https://onlinelibrary.wiley.com/doi/abs/10.1111/tpj.70413 
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| Author Notes: | Martin Zauser, Anja Liese, Anna Feldman-Salit, Melanie Krebs, Karin Schumacher, Tina Romeis, Ursula Kummer and Jürgen Pahle |
| Summary: | The decoding of calcium signals by plant calcium-dependent kinases (CPKs) is not fully understood yet. Based on kinetic in vitro measurements of the activity of several CPK proteins, their individual activity profile was modeled and coupled to cytosolic calcium concentration changes from in vivo measurements of guard cells and epidermal leaf cells. In addition, computationally produced surrogate data were used. It was analyzed how individual activity profiles of CPKs will change in response to the different calcium time courses. In addition, the impact of modeling explicitly individual elementary reaction steps for binding and unbinding in comparison to using a heuristic Hill equation for the binding process was investigated. |
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| Item Description: | Online verfügbar: 05. September 2025 Gesehen am 23.01.2026 |
| Physical Description: | Online Resource |
| ISSN: | 1365-313X |
| DOI: | 10.1111/tpj.70413 |