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Two-component signaling pathways involve histidine kinases, response regulators, and sometimes histidine-containing phosphotransfer proteins. Prevalent in prokaryotes, these signaling elements have also been co-opted to meet the needs of signal transduction in eukaryotes such as fungi and plants. Here we consider the evolution of such regulatory systems, with a particular emphasis on the roles they play in signaling by the plant hormones cytokinin and ethylene, in phytochrome-mediated perception of light, and as integral components of the circadian clock.

Original publication

DOI

10.1016/j.cub.2011.02.045

Type

Journal article

Journal

Curr Biol

Publication Date

10/05/2011

Volume

21

Pages

R320 - R330

Keywords

Biological Evolution, Circadian Clocks, Cytokinins, Ethylenes, Eukaryotic Cells, Histidine Kinase, Light Signal Transduction, Models, Biological, Plants, Prokaryotic Cells, Protein Kinases, Signal Transduction