Phy tunes: phosphorylation status and phytochrome-mediated signaling.
Phytochromes are photoreceptors that regulate various aspects of plant growth and development. In this issue of Cell, Ryu et al. (2005) show that PAPP5, a type 5 protein phosphatase, acts on a biologically active phytochrome, increasing its stability and affinity for a downstream signal transducer and thus enhancing plant photoresponses.
Rubio
Vicente
V
Department of Molecular, Cellular, and Developmental Biology, Yale University, New Haven, Connecticut 06520, USA.
Deng
Xing Wang
XW
D029681:Arabidopsis Proteins / Q000378:metabolism; D010749:Phosphoprotein Phosphatases / Q000378:metabolism*; D010766:Phosphorylation / Q000528:radiation effects; D010788:Photosynthesis / Q000502:physiology* / Q000528:radiation effects; D010834:Phytochrome / Q000096:biosynthesis*; D010944:Plants / Q000378:metabolism* / Q000528:radiation effects; D015398:Signal Transduction / Q000502:physiology* / Q000528:radiation effects
D029681:Arabidopsis Proteins; D010834:Phytochrome; C472138:FyPP protein, Arabidopsis; D010749:Phosphoprotein Phosphatases