Compilation and Characterization of Histidine-Containing Phosphotransmitters Implicated in His-to-Asp Phosphorelay in Plants: AHP Signal Transducers of Arabidopsis thaliana

Tomomi SUZUKI; Kensuke SAKURAI; Aya IMAMURA; Ayako NAKAMURA; Chiharu UEGUCHI; Takeshi MIZUNO

doi:10.1271/bbb.64.2486

Biochemistry & Molecular Biology Notes

Compilation and Characterization of Histidine-Containing Phosphotransmitters Implicated in His-to-Asp Phosphorelay in Plants: AHP Signal Transducers of Arabidopsis thaliana

Tomomi SUZUKI, Kensuke SAKURAI, Aya IMAMURA, Ayako NAKAMURA, Chiharu UEGUCHI, Takeshi MIZUNO

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Keywords: Arabidopsis thaliana, His-to-Asp phosphorelay, HPt signal transducers, response regulators, His-kinases

JOURNAL FREE ACCESS

2000 Volume 64 Issue 11 Pages 2486-2489

DOI https://doi.org/10.1271/bbb.64.2486

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Abstract

Histidine (His)-to-Aspartate (Asp) phosphorelay signal transduction systems are generally made up of a “sensor histidine (His)-kinase”, a “response regulator”, and a “histidine-containing phosphotransmitter (HPt)”. In the higher plant, Arabidopsis thaliana, results from recent intensive studies suggested that the His-to-Asp phosphorelay mechanism is at least partly responsible for propagation of environmental stimuli, such as phytohormones (e.g. ethylene and cytokinin). Here we compiled the members of the HPt family of phosphotransmitters in Arabidopsis thaliana (AHP- series, Arabidopsis HPt phosphotransmitters), based on both database and experimental analyses, in order to provide a comprehensive basis at the molecular level for understanding the function of the AHP phosphotransmitters that are implicated in the His-to-Asp phosphorelay of higher plants.

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