1999年9月
Biochemical characterization of a putative cytokinin-responsive his-kinase, CKI1, from Arabidopsis thaliana
BIOSCIENCE BIOTECHNOLOGY AND BIOCHEMISTRY
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- 巻
- 63
- 号
- 9
- 開始ページ
- 1627
- 終了ページ
- 1630
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1271/bbb.63.1627
- 出版者・発行元
- TAYLOR & FRANCIS LTD
His-Asp phosphorelays are evolutionary-conserved powerful biological tactics for intracellular signal transduction. Such a phosphorelay is generally made up of "sensor histidine (His)-kinases", "response regulators", and "histidine-containing (HPt) phosphotransmitters''. Results from recent intensive studies suggested that, in the higher plant Arabidopsis thaliana, His-Asp phosphorelays may be widely used for propagating environmental stimuli, such as phytohormones (e.g., ethylene and cytokinin). In this study, we characterized, in vitro, the putative cytokinin-responsive CKI1 His-kinase, in terms of His-Asp phosphorelays. It was demonstrated for the first time that the receiver domain in this sensor exhibits a strong phosphohistidine phosphatase activity toward some Arabidopsis HPt phosphotransmitters (AHP1 and AHP2), suggesting the functional importance of the receiver domain for a presumed interaction of the sensor His-kinase with other His-Asp phosphorelay components.
- リンク情報
- ID情報
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- DOI : 10.1271/bbb.63.1627
- ISSN : 0916-8451
- eISSN : 1347-6947
- CiNii Articles ID : 110002679725
- Web of Science ID : WOS:000082891300020