PKS1, a substrate phosphorylated by phytochrome that modulates light signaling in Arabidopsis.

@article{Fankhauser1999PKS1AS,
  title={PKS1, a substrate phosphorylated by phytochrome that modulates light signaling in Arabidopsis.},
  author={Christian Fankhauser and Kevin C. Yeh and John Clark Lagarias and Haiwen Zhang and Tedd D. Elich and Joanne Chory},
  journal={Science},
  year={1999},
  volume={284 5419},
  pages={1539-41}
}
Plants constantly monitor their light environment in order to grow and develop optimally, in part through use of the phytochromes, which sense red/far-red light. A phytochrome binding protein, PKS1 (phytochrome kinase substrate 1), was identified that is a substrate for light-regulated phytochrome kinase activity in vitro. In vivo experiments suggest that PKS1 is phosphorylated in a phytochrome-dependent manner and negatively regulates phytochrome signaling. The data suggest that phytochromes… CONTINUE READING
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