2007 Fiscal Year Final Research Report Summary
Molecular mechanism of the clock molecular machinery
Project/Area Number |
17207001
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Research Category |
Grant-in-Aid for Scientific Research (A)
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Allocation Type | Single-year Grants |
Section | 一般 |
Research Field |
Genetics/Genome dynamics
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Research Institution | Nagoya University |
Principal Investigator |
ISHIURA Masahiro Nagoya University, Cenhr for Gene Reseamh, Professor (20132730)
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Co-Investigator(Kenkyū-buntansha) |
IHARA Kunio Nagoya University, Center for Gene Reseamh.Reseamh, Assistant Professor (90223297)
ITO Sigeru Nagoya University, Graduate Schoolof Science, Professor (40108634)
NAMBA Keiichi Osaka University, Graduate SclnolofFrontierFrience, Professor, 教授 (30346142)
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Project Period (FY) |
2005 – 2007
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Keywords | Biological clock / Clock gene / KaiB / KaiC / ATPase / Pex / Cyanobacteria / Chlamydomonas |
Research Abstract |
We developed two kinds of automated bioluminescence-monitoring apparatuses and the bioluminescence rhythm-analyzing program RAP. In cyanobacteria, we established the followings : 1)The N-terminal domain of clock protein KaiC is involved in the hexamerization of KaiC, and the C-terminal domain is involved in the inter-subunit phosphorylation of kaiC.2)KaiC has extremely weak ATPase activity, and the activity is enhanced by KaiA and is repressed by the phosphorylation of KaiC. Both the N-terminal and C-terminal domain proteins of KaiC have ATPase activity. KaiC ATPase activity is temperature-compensated, but the lack of phosphorylation sites in KaiC results in the loss of the temperature compensation.3)We determined the crystal structure of KaiB. Based on the atomic structure, we predicted important substructures and functional residues of KaiB that are involved in the clock oscillation of the clock machinery and confirmed their importance.4)We also determined the crystal structure of Pex, which is one of major components of the circadian input pathway of light. Based on the atomic structure, we predicted the functional residues of Pex that are involved in the interaction with DNA and confirmed their importance.5)Using DNA microarrays, we identified circadian-regulated genes and clarified their expression patterns. In Chlamydomonas, we developed a bioluminescence-rhythm-monitoring system of chloroplasts, isolated various types of rhythm mutants, and then identified clock genes and clock-related genes. Some of the clock genes share common motifs with higher plant clock genes, and others are specific to Chlamydomonas. In Arabidopsis, we cloned "a true clock gene" in the higher plant, PHYTOCLOCK 1.
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Research Products
(115 results)
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[Journal Article] A systematic forward genetic analysis identified components of the Chlamydomonas circadian system2008
Author(s)
Matsuo, T, Okamoto, K, Onai, K, Niwa, Y, Shimogawara, K, Ishiura, M
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Journal Title
Genes Dev 22
Pages: 918-930
Description
「研究成果報告書概要(欧文)」より
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[Journal Article] ATPase activity and its temperature compensation of the cyanobacterial clock protein KaiC2008
Author(s)
Murakami, R, Miyake, A, Iwase, R, Hayashi, F, Uzumaki, T, Ishium, M
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Journal Title
Genes Cells 13
Pages: 387-395
Description
「研究成果報告書概要(欧文)」より
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[Journal Article] The circadian clock-related gene pex regulates a negative cis element in the kaiA promoter region2007
Author(s)
Kutsuna, S, Kondo, T, Ikegami, H, Uzumaki, T, Katayama, M, Ishiura, M
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Journal Title
J Bacteriol 189
Pages: 7690-7696
Description
「研究成果報告書概要(欧文)」より
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[Journal Article] Real-time monitoring of chloroplast gene expression by aluciferase reporter: evidence for nuclear regulation of chloroplast circadian period.2006
Author(s)
Matsuo, T., Onai, K., Okamoto, K., Ito, G., Minagawa, J, Ishiura, M
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Journal Title
Mol. Cell. Biol. 26
Pages: 863-870
Description
「研究成果報告書概要(和文)」より
Peer Reviewed
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[Journal Article] Real-time monitoring of chloroplast gene expression by a luciferase reporter : evidence for nuclear regulation of chloroplast circadian period2006
Author(s)
Matsuo, T., Onai, K., Okamoto, K., Ito, G., Minagawa, J, Ishium, M
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Journal Title
Mol Cell Biol 26
Pages: 863-870
Description
「研究成果報告書概要(欧文)」より
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[Journal Article] Functionally important substructures of circadian clock protein KaiB in unique tetramer complex.2005
Author(s)
Iwase, R., Imada, K., Hayashi, F., Uzumaki, T., Morishita, M., Onai, K., Furukawa, Y., Namba, K., Ishiura, M.
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Journal Title
J. Bio. Chem. 280
Pages: 43141-43149
Description
「研究成果報告書概要(和文)」より
Peer Reviewed
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[Journal Article] Global Analysis of Circadian Expression in the cvanobacterium Synechocystis sp. strain PCC 68032005
Author(s)
Kucho, K, Okamoto, K, Tsuchiya, Y, Nomura, S, Nango, M, Kanehisa, M, Ishiura, M
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Journal Title
J Bacteriol 187
Pages: 2190-2199
Description
「研究成果報告書概要(欧文)」より
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[Journal Article] Functionally important substructures of circadian clock protein KaiB in unique tetramer complex2005
Author(s)
Iwase, R., Imada, K., Hayashi, F., Uzumaki, T., Morishita, M., Onai, K., Furukawa, Y., Namba, K., Ishium. M
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Journal Title
J Biol Chem 280
Pages: 43141-43149
Description
「研究成果報告書概要(欧文)」より
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[Presentation] SDSL-ESR study of the cyanobacterial clock protein2008
Author(s)
Kentaro, Ishii, Reiko, Murakami, Risa, Mutoh, Masahiro, Ishiura, Toshiaki, Arata
Organizer
The GCOE Young Scientist Symposium of Nagoya University
Place of Presentation
Noyori Conference Fall, Nagoya University, Nagoya, Poster
Year and Date
2008-03-05
Description
「研究成果報告書概要(欧文)」より
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[Presentation] The ATPase activity of the cyanobacterial clock protein KaiC2007
Author(s)
Reiko, Murakami, Ayumi, Miyake, Ryo, Iwase, Fumio, Hayashi, Tatsuya, Uzumaki, Masahiro, Ishiura
Organizer
The 45th Annual Meeting of the Biophysical Society of Japan
Place of Presentation
Pacifico Yokohama, Yokohama, Poster
Year and Date
20071221-23
Description
「研究成果報告書概要(欧文)」より
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[Presentation] Biochemical and structural analysis of the cyanobacterial clock-related protein SasA2007
Author(s)
Jonathan, Valencia, Kyouhei, Bitou, Reiko, Murakami, Katsumi, Imada, Masahiro, Ishiura
Organizer
The 45th Annual Meeting of the Biophysical Society of Japan
Place of Presentation
Pacifico Yokohama, Yokohama, Poster
Year and Date
20071221-23
Description
「研究成果報告書概要(欧文)」より
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[Presentation] SDSL-ESR study of the cyanobacterial clock protein2007
Author(s)
Kentaro, Ishii, Reiko, Murakami, Risa, Mutoh, Masahiro, Ishiura, Toshiaki, Arata
Organizer
The 45th Annual Meeting of the Biophysical Society of Japan
Place of Presentation
Pacifico Yokohama, Yokohama. Poster
Year and Date
20071221-23
Description
「研究成果報告書概要(欧文)」より
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[Presentation] Crystalization of KaiA-KaiC complexes for structure analysis2006
Author(s)
Kyouhei, Bitou, Ryo, Iwase, Seiji, Sakaguchi, Reiko, Murakami, Katsumi, Imada, Keiichi, Namba, Masahiro, Isium
Organizer
EABS & BSJ 2006
Place of Presentation
Okinawa Convention Center, Okinawa, Japan, Poster
Year and Date
20061112-16
Description
「研究成果報告書概要(欧文)」より
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[Presentation] The Biochemical function of the cyanobacterial circadian clock protein KaiB2006
Author(s)
Risa, Mulch, Reiko, Murakami, Ryo, Iwase, Masahiro, Ishiura
Organizer
EABS & BSJ 2006
Place of Presentation
Okinawa Convention Center, Okinawa, Japan, Poster
Year and Date
20061112-16
Description
「研究成果報告書概要(欧文)」より
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[Presentation] Real-time monitoring of chloroplast gene expression by a luciferase reporter2006
Author(s)
Takuya, Matsuo, Kiyoshi, Onai, Kazuhisa, Okamoto, Jun, Minagawa, Masahiro, Ishiura
Organizer
evidence for nuclear regulation of chloroplast circadian period, The 12th Intemational Conference on the Cell and Molecular Biology of Chlamydomonas
Place of Presentation
Lloyd center, Portland, Oregon, Poster
Year and Date
20060509-14
Description
「研究成果報告書概要(欧文)」より
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[Presentation] 時計タンパク質の構造と機能2006
Author(s)
石浦正寛
Organizer
平成18年度「タンパク質の一生」班会議
Place of Presentation
宮城蔵王ロイヤルホテル
Year and Date
2006-12-18
Description
「研究成果報告書概要(和文)」より
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[Presentation] 植物時計2006
Author(s)
石浦正寛
Organizer
2006年度名古屋大学大学説明会施設見学
Place of Presentation
名古屋大学遺伝子実験施設
Year and Date
2006-08-10
Description
「研究成果報告書概要(和文)」より
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[Presentation] Structural analysis of mutants of cyanobacterial circadian clock protein KaiB2005
Author(s)
Ryo, Iwase, Katsumi, Imada, Fumio, Hayashi, Tatsuya, Uzumaki, Keiichi, Namba, Masahiro, Ishiura
Organizer
International Symposium on Life of Proteins- Maturation, Translation and Quality Control in the Cell
Place of Presentation
Awaji-Yumebutai, Awaji, Poster
Year and Date
2005-10-30
Description
「研究成果報告書概要(欧文)」より
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[Presentation] Kinetics of the ATPase and phosphorylation activities of circadian clock protein KaiC from Thermosynechococcus elongatus2005
Author(s)
Ayumi, Miyake, Fumio, Hayashi, Ryo, Iwase, Masahiro, Ishiura
Organizer
Interational Symposium on Life of Proteins- Maturation, Translation and Quality Control in the Cell
Place of Presentation
Awaji-Yumebutai, Awaji, Poster
Year and Date
2005-10-30
Description
「研究成果報告書概要(欧文)」より
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[Presentation] 藍色細菌の凍結保存法2005
Author(s)
小内清、森下めぐみ、石浦正寛
Organizer
日本遺伝学会第77回大会
Place of Presentation
国立オリンピック記念青少年総合センター
Year and Date
2005-09-29
Description
「研究成果報告書概要(和文)」より
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