Phytochromes are Pr-ipatetic kinases.
A series of new studies reveal how the red/far-red light photoreceptors called phytochromes act. Phytochrome A and phytochrome B each move to the nucleus when activated by light, and phytochrome A is a kinase. Phytochrome-interacting proteins provide candidate signal transduction components and a recent physiological study suggests how phyA may mediate responses to far-red light. Regulation of phytochrome nuclear localization and kinase activities creates multiple phytochrome species, which may each have different regulatory activities.
Reed
J W
JW
University of North Carolina, Department of Biology, CB #3280, Coker Hall, Chapel Hill, NC 27599-3280, USA. jreed@email.unc.edu
D002467:Cell Nucleus / Q000502:physiology; D008027:Light; D008956:Models, Chemical; D010770:Phosphotransferases / Q000378:metabolism; D010786:Photoreceptor Cells; D045322:Photosynthetic Reaction Center Complex Proteins / Q000378:metabolism; D010834:Phytochrome / Q000378:metabolism*; D051942:Phytochrome A; D051939:Phytochrome B; D010944:Plants / Q000378:metabolism*; D015398:Signal Transduction; D014157:Transcription Factors
D045322:Photosynthetic Reaction Center Complex Proteins; D051942:Phytochrome A; D014157:Transcription Factors; D010834:Phytochrome; D051939:Phytochrome B; D010770:Phosphotransferases