K
Kazuhisa Okamoto
Researcher at Nagoya University
Publications - 25
Citations - 766
Kazuhisa Okamoto is an academic researcher from Nagoya University. The author has contributed to research in topics: Gene & Circadian rhythm. The author has an hindex of 12, co-authored 25 publications receiving 715 citations.
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Journal ArticleDOI
Global Analysis of Circadian Expression in the Cyanobacterium Synechocystis sp. Strain PCC 6803
Ken-ichi Kucho,Kazuhisa Okamoto,Yuka Tsuchiya,Satoshi Nomura,Mamoru Nango,Minoru Kanehisa,Masahiro Ishiura +6 more
TL;DR: The expression of most cycling genes peaked around the time of transition from subjective day to night, suggesting that the main role of the circadian clock in Synechocystis is to adjust the physiological state of the cell to the upcoming night environment.
Journal ArticleDOI
Bacterial cryptochrome and photolyase: characterization of two photolyase-like genes of Synechocystis sp. PCC6803
Kenichi Hitomi,Kazuhisa Okamoto,Hiromi Daiyasu,Hiroshi Miyashita,Shigenori Iwai,Hiroyuki Toh,Masahiro Ishiura,Takeshi Todo +7 more
TL;DR: Phylogenetic analysis showed that sll1629 is more closely related to the cryptochromes than photolyases, and this is the first description of a bacterial cryptochrome.
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A systematic forward genetic analysis identified components of the Chlamydomonas circadian system
Takuya Matsuo,Kazuhisa Okamoto,Kiyoshi Onai,Yoshimi Niwa,Kosuke Shimogawara,Masahiro Ishiura +5 more
TL;DR: A large number of components of the circadian system in the eukaryotic unicellular alga Chlamydomonas reinhardtii are identified by a systematic forward genetic approach and it is revealed that various biological processes are involved in regulation of the chloroplast rhythms.
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Real-Time Monitoring of Chloroplast Gene Expression by a Luciferase Reporter: Evidence for Nuclear Regulation of Chloroplast Circadian Period
TL;DR: It is demonstrated that chloroplast gene expression rhythm is a bona fide circadian rhythm and that the nucleus-encoded circadian oscillator determines the period length of the chlorochloroplast rhythm.
Journal ArticleDOI
Large-scale screening of Arabidopsis circadian clock mutants by a high-throughput real-time bioluminescence monitoring system
Kiyoshi Onai,Kazuhisa Okamoto,Harumi Nishimoto,Chisato Morioka,Minako Hirano,Nobunori Kami-ike,Masahiro Ishiura +6 more
TL;DR: In this paper, a real-time bioluminescence monitoring system was used to detect arrhythmia in Arabidopsis thaliana mutants for extensively altered circadian rhythms.