Report

PKS1, a Substrate Phosphorylated by Phytochrome That Modulates Light Signaling in Arabidopsis

Science  28 May 1999:
Vol. 284, Issue 5419, pp. 1539-1541
DOI: 10.1126/science.284.5419.1539

You are currently viewing the abstract.

View Full Text

Via your Institution

Log in through your institution

Log in through your institution


Abstract

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 signal by serine-threonine phosphorylation.

  • * Present address: Monsanto Company, 700 Chesterfield Parkway, North St. Louis, MO 63198, USA.

  • To whom correspondence should be addressed. E-mail: chory{at}salk.edu

View Full Text

Related Content