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Trends Biochem Sci. 1999 Nov;24(11):452-6.

Phosphorelay signal transduction: the emerging family of plant response regulators.

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Dept of Biological Sciences, Laboratory for Molecular Biology, University of Illinois at Chicago, Chicago, IL 60607, USA.


Homologs of bacterial two-component signal transduction elements are emerging as key players in eukaryotic signaling systems. The recent identification of a large gene family in Arabidopsis that is similar to two-component response regulators emphasizes the importance of this signaling mechanism in plants. The understanding of the function of these response regulator genes is only rudimentary but the transcriptional induction of a subset by cytokinin suggests a role for some of these regulators in the response to this important plant hormone.

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