Five histidine kinases perceive osmotic stress and regulate distinct sets of genes in Synechocystis

Kalyanee Paithoonrangsarid, Maria A. Shoumskaya, Yu Kanesaki, Syusei Satoh, Satoshi Tabata, Dmitry A. Los, Vladislav V. Zinchenko, Hidenori Hayashi, Morakot Tanticharoen, Iwane Suzuki, Norio Murata

Research output: Contribution to journalArticlepeer-review

114 Scopus citations

Abstract

Microorganisms respond to hyperosniotic stress via changes in the levels of expression of large numbers of genes. Such responses are essential for acclimation to a new osmotic environment. To identify factors involved in the perception and transduction of signals caused by hyperosmotic stress, we examined the response of Synechocystis sp. PCC 6803, which has proven to be a particularly useful microorganism in similar analyses. We screened knockout libraries of histidine kinases (Hiks) and response regulators (Rres) in Synechocystis by DNA microarray and slot-blot hybridization analyses, and we identified several two-component systems, which we designated Hik-Rre systems, namely, Hik33-Rre31, Hik34-Rre1, and Hik10-Rre3, as well as Hik16-Hik41-Rre17, as the transducers of hyperosmotic stress. We also identified Hik2-Rre1 as a putative additional two-component system. Each individual two-component system regulated the transcription of a specific group of genes that were responsive to hyperosmotic stress.

Original languageEnglish
Pages (from-to)53078-53086
Number of pages9
JournalJournal of Biological Chemistry
Volume279
Issue number51
DOIs
StatePublished - 17 Dec 2004

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