Faculty Profiles - AOKI Setsuyuki

Papers - AOKI Setsuyuki

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Effects of the signaling molecule cyclic-di-GMP on cyanobacterial circadian rhythm in Synechococcus elongatus PCC 7942 Reviewed International coauthorship

Chihiro Yamaguchi, Robert Kanaly, Eri Nishizaki, Kei-ichi Yamashita, Koichiro Takatsuki, Yoshihiko Furuike, Mingxu Fang, Shuji Akiyama, Setsuyuki Aoki, Masaki Tsukamoto, Yoichi Nakahira, Susan Golden, and Shinsuke Kutsuna

Journal of Bacteriology 2026

CRISPR/Cas9-Induced Targeted Mutagenesis of the Moss Physcomitrium patens by Particle Bombardment-Mediated Transformation Reviewed Open Access

So Takenaka, Mamoru Sugita, Toshihisa Nomura and Setsuyuki Aoki

Bio-protocol Vol. 15 ( 18 ) page： e5452 2025.9

Light responses during early day phases of CIRCADIAN CLOCK ASSOCIATED 1 (CCA1) and PSEUDO-RESPONSE REGULATOR (PRR) homologous genes in the moss Physcomitrium patens Reviewed International coauthorship

Katsuhiro Chiso, Takafumi Yamashino, Ryo Suzuki, Tanja Gans, Silvia Trogu, Jon Hughes and Setsuyuki Aoki

Photochemistry and Photobiology Vol. 101 ( 3 ) page： 762 - 770 2025.5

Nuclear interactions between the Pseudo-Response Regulator clock proteins and the Multi-Step Phosphorelay mediator Histidine-containing phosphotransfers in the moss Physcomitrium patens Reviewed

Shu Anami, Takafumi Yamashino, Haruki Kikuchi, Ryo Suzuki, Setsuyuki Aoki

Biochemical and Biophysical Research Communications Vol. 733 page： 150734 2024.9

Diurnal control of intracellular distributions of PAS-Histidine Kinase 1 and its interactions with partner proteins in the moss Physcomitrium patens Reviewed Open Access

Haruki Kikuchi, Takafumi Yamashino, Shu Anami, Ryo Suzuki, Mamoru Sugita and Setsuyuki Aoki

Biochemical and Biophysical Research Communications Vol. 616 page： 1 - 7 2022.8

Quantification of cyanobacterial cyclic di-guanosine monophosphate (c-di-GMP) by liquid chromatography electrospray ionization tandem mass spectrometry Reviewed Open Access

Kameda M., Kanaly R.A., Harada M., Aoki S., Tukada H., Kutsuna S.

Journal of Microbiological Methods Vol. 196 page： 106468 2022.5

Language：Japanese Publishing type：Research paper (scientific journal) Publisher：Journal of Microbiological Methods

Cyclic di-guanosine monophosphate (c-di-GMP) is a second messenger found ubiquitously in bacteria. This signaling molecule regulates a variety of physiological activities such as phototaxis and flocculation in cyanobacteria and is critical for their environmental adaptation. Although genes encoding the enzymes for synthesis and/or degradation of c-di-GMP are found in the genomes of both multicellular and unicellular cyanobacteria, little is known about the biological functions of these enzymes in cyanobacterial cells. Here we have established a robust and highly sensitive liquid chromatography tandem mass spectrometry (LC-MS/MS)-based method for c-di-GMP quantification using a cost-effective solvent, methanol. Quantification methods were validated by measuring c-di-GMP in the cyanobacterium Synechococcus elongatus PCC 7942 through spiking and recovery assays after which the method was applied to examine short-term changes in cellular levels of c-di-GMP in response to a transition from light to dark or from dark to light in S. elongatus. Results showed that a transient increase in c-di-GMP upon transitioning from light to dark was occurring which resembled responses involving cyclic adenosine monophosphate and other second messengers in cyanobacteria. These findings demonstrated that our method enabled relatively specific and sensitive quantification of c-di-GMP in cyanobacteria at lower cost.

DOI： 10.1016/j.mimet.2022.106468

Scopus

PubMed

Physcomitrium patens pentatricopeptide repeat protein PpPPR_32 is involved in the accumulation of psaC mRNA encoding the iron sulfur protein of photosystem I Reviewed Open Access

Ryo Suzuki, Chieko Sugita, Setsuyuki Aoki and Mamoru Sugita

Genes to Cells 2022.2

Red light-regulated interaction of PAS histidine kinases with partner HPt proteins in Physcomitrium patens Reviewed

Shu Anami, Takafumi Yamashino, Ryo Suzuki, Kota Nakai, Kensuke Sato, Bowen Wu, Masashi Ryo, Mamoru Sugita and Setsuyuki Aoki

Genes to Cells Vol. 26 ( 9 ) page： 698 - 713 2021

Bioluminescence burst caused by a process in carbohydrate metabolism in a luciferase reporter strain of Escherichia coli. Reviewed

Aiba K, Kobayashi Y, Aoki S.

Biochemical and Biophysical Research Communications Vol. 532 ( 2 ) page： 185-189 2020.9

PAS-histidine kinases PHK1 and PHK2 exert oxygen-dependent dual and opposite effects on gametophore formation in the moss Physcomitrella patens Reviewed

Masashi Ryo, Takafumi Yamashino, Hisanori Yamakawa, Yuichi Fujita, Setsuyuki Aoki

Biochemical and Biophysical Research Communications Vol. 503 ( 4 ) page： 2861-2865 2018.8

Light-regulated PAS-containing histidine kinases delay gametophore formation in the moss Physcomitrella patens Reviewed Open Access

Masashi Ryo, Takafumi Yamashino, Yuji Nomoto, Yuki Goto, Mizuho Ichinose, Kensuke Sato, Mamoru Sugita, Setsuyuki Aoki

Journal of Experimental Botany Vol. 69 ( 20 ) page： 4839-4851 2018.7

Diversity of plant circadian clocks: insights from studies of Chlamydomonas reinhardtii and Physcomitrella patens. Reviewed Open Access

Masashi Ryo, Takuya Matsuo, Takafumi Yamashino, Mizuho Ichinose, Mamoru Sugita and Setsuyuki Aoki

Plant Signaling & Behavior Vol. 11 ( 1 ) page： e1116661 2016.1

Posttranslationally caused bioluminescence burst of the Escherichia coli luciferase reporter strain Reviewed

Yamato ideguchi, Yuta Oshikoshi, Masashi Ryo, Shogo Motoki, Takashi Kuwano, Takafumi Tezuka and Setsuyuki Aoki

Archives of Microbiology Vol. 198 ( 1 ) page： 35-41 2016.1

Visual discrimination learning in the small octopus Octopus ocellatus Reviewed

Mitsuru Tomita and Setsuyuki Aoki

Ethology Vol. 120 ( 9 ) page： 863-672 2014.9

Authorship：Lead author Language：English Publishing type：Research paper (scientific journal)

Octopus ocellatus is a small benthic species of octopus that is easy to rear and spawns large eggs during a short life cycle. These and other features of O. ocellatus may make it an advantageous subject for a broad range of behavioral studies, including those involving various types of learning. However, no type of learning has been studied in O. ocellatus. In a successive visual discrimination task, in which a `positive' or `negative' stimulus (white or black rectangle) was presented to a subject octopus and appropriate rewards or punishments were given to the subject, the rate of `correct' responses (i.e., touches to the positive stimulus or refraining from the negative stimulus) gradually increased. Moreover, `observer' octopuses that observed another octopus performing a visual discrimination task in which reward was also given to the `incorrect' responses (touches to the negative stimulus) showed a higher ratio of incorrect responses in their test sessions. These results, coupled with the physical characteristics of O. ocellatus, indicate that this species is potentially suitable for neurogenetic and neuroembryological studies of learning.

DOI： 10.1136/bjophthalmol-2016-310069

Cyclic bis(3'-5')diadenylic acid (c-di-AMP) analogs promote the activities of photosynthesis and respiration of Chlamydomonas reinhardtii Invited Reviewed

Takafumi Tezuka, Hiroshi Shirouzu, Keigo Ishida, Noritaka Suzuki, Takuya Matsuo, Kin-ichi Oyama, Setsuyuki Aoki and Masaki Tsukamoto

American Journal of Plant Sciences Vol. 5 ( 1 ) page： 24-28 2014.1

Firefly luciferase as the reporter for transcriptional response to the environment in Escherichia coli Reviewed

Masashi Ryo, Yuta Oshikoshi, Shosei Doi, Shogo Motoki, Atsuko Niimi and Setsuyuki Aoki

Analytical Biochemistry Vol. 443 ( 2 ) page： 211-213 2013.9

Synthesis of 2'-modified cyclic bis(3'-5')diadenylic acids (c-di-AMPs) and their promotion of cell division in a freshwater green alga Reviewed

Takafumi Tezuka, Noritaka Suzuki, Keigo Ishida, Kin-ichi Oyama, Setsuyuki Aoki and Masaki Tsukamoto

Chemistry Letters Vol. 41 ( 12 ) page： 1723-1725 2012.12

Heterologous expression and functional characterization of a Physcomitrella Pseudo Response Regulator homolog, PpPRR2, in Arabidopsis Reviewed Open Access

Santosh B. Satbhai, Takashi Yamashino, Takeshi Mizuno and Setsuyuki Aoki

Bioscience, Biotechnolgy, and Biochemistry Vol. 75 ( 4 ) page： 786-789 2011.5

Pseudo-Response Regulator (PRR) homologs of the moss Physcomitrella patens: Insights into the evolution of the PRR family in land plants. Reviewed

Santosh B. Satbhai, Takafumi Yamashino, Ryo Okada, Yuji Nomoto, Takeshi Mizuno, Yuki Tezuka, Tomonori Itoh, Mitsuru Tomita, Susumu Otsuki and Setsuyuki Aoki

DNA Research Vol. 18 ( 1 ) page： 39-52 2011

*Functional characterization of CCA1/LHY homolog genes, PpCCA1a and PpCCA1b, in the moss Physcomitrella patens Reviewed Open Access

Ryo Okada, Sayo Kondo, Santosh B. Satbhai, Nobutoshi Yamaguchi, Masashi Tsukuda and Setsuyuki Aoki

Plant Journal Vol. 60 ( 3 ) page： 551-563 2009

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Papers - AOKI Setsuyuki