Will the real LHC II kinase please step forward?
Many laboratories have searched for the protein kinase responsible for phosphorylation of the chloroplast light-harvesting complex of photosynthesis, LHC II. The LHC II kinase provides a vital link in a redox signaling pathway of ecological, developmental, and evolutionary significance. Various candidates for the LHC II kinase, some stronger than others, have come and gone. Recently, a family of three thylakoid-associated kinases (TAKs) has been identified and purified; they too catalyze in vitro phosphorylation of LHC II. The LHC II kinase is part of an integrated network of signal transduction to which input is provided by a number of environmental factors. The implications of understanding these processes stretch beyond the important, central question of how plants adapt their photosynthetic machinery to changing wavelengths of light.
Allen
John F
JF
Plant Biochemistry, Center for Chemistry and Chemical Engineering, Lund University, Box 124, SE-221 00 Lund, Sweden. john.allen@plantbio.lu.se
Race
Helen L
HL
D029681:Arabidopsis Proteins / Q000502:physiology; D045342:Light-Harvesting Protein Complexes; D008565:Membrane Proteins / Q000502:physiology; D010766:Phosphorylation; D045322:Photosynthetic Reaction Center Complex Proteins / Q000737:chemistry; D011494:Protein Kinases / Q000502:physiology*
D029681:Arabidopsis Proteins; D045342:Light-Harvesting Protein Complexes; D008565:Membrane Proteins; D045322:Photosynthetic Reaction Center Complex Proteins; D011494:Protein Kinases; C120337:light-harvesting complex II kinase