A cyanobacterial phytochrome two-component light sensory system.

K C Yeh; S H Wu; J T Murphy; J C Lagarias

doi:10.1126/science.277.5331.1505

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A cyanobacterial phytochrome two-component light sensory system.

K C Yeh·S H Wu·J T Murphy·J C Lagarias

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Abstract

The biliprotein phytochrome regulates plant growth and developmental responses to the ambient light environment through an unknown mechanism. Biochemical analyses demonstrate that phytochrome is an ancient molecule that evolved from a more compact light sensor in cyanobacteria. The cyanobacterial phytochrome Cph1 is a light-regulated histidine kinase that mediates red, far-red reversible phosphorylation of a small response regulator, Rcp1 (response regulator for cyanobacterial phytochrome), encoded by the adjacent gene, thus implicating protein phosphorylation-dephosphorylation in the initial step of light signal transduction by phytochrome.

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Amino Acid Sequence Bacterial Proteins Cloning, Molecular Cyanobacteria Genes, Bacterial Histidine Kinase Light Molecular Sequence Data Operon Phosphorylation Protein Kinases Proteins Recombinant Fusion Proteins Sequence Deletion Signal Transduction Journal Article Research Support, U.S. Gov't, Non-P.H.S.Research Support, U.S. Gov't, P.H.S.

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K C Yeh, S H Wu, J T Murphy, J C Lagarias. 1997-09-05. A cyanobacterial phytochrome two-component light sensory system.. https://doi.org/10.1126/science.277.5331.1505

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