Article
Microbiology
Jihye Yang, Sohyeon Yun, Woojun Park
Summary: The presence or absence of BlsA protein in Acinetobacter species genomes has raised curiosity about its role in regulating bacterial lifestyle under light. Genetic and transcriptomic analyses revealed the loss of BlsA in several multidrug-resistant strains and the light-mediated induction of blsA. Furthermore, the study identified a potential interaction partner of BlsA, BipA, and confirmed their direct interactions under specific conditions.
Article
Microbiology
Yeqi Shan, Ge Liu, Ruining Cai, Rui Liu, Rikuan Zheng, Chaomin Sun
Summary: Light is an important energy source and environmental signal that affects the lifestyle of various microorganisms. The responses of deep-sea microbes to light remain largely unknown. In this study, a novel bacterial species, Spongiibacter nanhainus CSC3.9, was successfully cultured from deep-sea cold seep samples using a blue light induction approach. It was found that blue light significantly promoted the growth of strain CSC3.9 and this light sensing was mediated by the BLUF protein. Furthermore, BLUF was widely found in marine microorganisms, suggesting that the distribution of light utilization by nonphototrophic bacteria in the ocean is underestimated.
Article
Chemistry, Multidisciplinary
Kai-Meng Liu, Peng-Yu Wang, Zhen-Yan Guo, De-Cai Xiong, Xian-Jin Qin, Miao Liu, Meng Liu, Wan-Ying Xue, Xin-Shan Ye
Summary: We report a visible-light-promoted 2-deoxyglycosylation reaction of alcohols with glycals, which exhibits high efficiency, excellent stereoselectivity, and the capability to synthesize glycosylated compounds with different chain lengths.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Materials Science, Ceramics
Joao Victor Barbosa Moura, Antonio Amison Gomes de Souza, Paulo de Tarso Cavalcante Freire, Cleanio da Luz Lima, Thiago Mielle Brito Ferreira Oliveira
Summary: The study reported the structural, morphological, and optical characterization of sodium-cerium molybdate, highlighting its potential as a promising photoelectroactive material for water splitting. Experimental results showed significant photoelectroactivity of the material, with a remarkable increase in photocurrent density under irradiation. The material also exhibited high stability after on-off cycles, confirming its proper performance as a photoanode for water splitting.
INTERNATIONAL JOURNAL OF APPLIED CERAMIC TECHNOLOGY
(2021)
Review
Chemistry, Multidisciplinary
Andras Lukacs, Peter J. Tonge, Stephen R. Meech
Summary: Researchers used time-resolved infrared experiments to investigate the signaling mechanism of light activated proteins. They discovered that the photosensing mechanism of blue light using flavin (BLUF) domain proteins involves non-single-exponential relaxation and a sequential electron and double proton transfer. They also achieved control over the photoactivation process through mutagenesis and unnatural amino acid substitution, and observed real-time changes in protein structural dynamics.
ACCOUNTS OF CHEMICAL RESEARCH
(2022)
Article
Chemistry, Multidisciplinary
Shunrou Tokonami, Morihiko Onose, Yusuke Nakasone, Masahide Terazima
Summary: The study revealed slow reaction kinetics in milliseconds for all examined BLUF proteins, contrary to previous beliefs of nanosecond red shifts. The slower dynamics in the tau(2)-phase were found to be strongly influenced by the size and nature of the C-terminal region adjacent to the BLUF domain, indicating its importance for biological functions. These results highlight the significance of Trp in the BLUF domain and propose a reaction scheme for BLUF reaction.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2022)
Article
Chemistry, Multidisciplinary
Yingying Zheng, Mengyuan Li, Ninging Yu, Shengjie Wang, Lili Sun, Xiang An, Yamin Han, Jinyi Lin, Xuehua Ding, Wei Huang
Summary: This study confirms that the defect structure in organic optoelectronic materials is detrimental to the performance and stability of deep-blue OLEDs. It also reveals that unsaturated aromatic units are easily attacked by external influences to form organic radicals, leading to a decrease in LED efficiency. The suppression of organic radicals can improve the performance and stability of OLEDs.
MATERIALS CHEMISTRY FRONTIERS
(2023)
Article
Chemistry, Multidisciplinary
Austin D. Marchese, Andrew G. Durant, Cian M. Reid, Clara Jans, Ramon Arora, Mark Lautens
Summary: A Pd(0)/blue light catalyzed carboiodination reaction has been reported, which generates a variety of iodinated hetero- and carbocycles. The reaction system is simple and stable, and shows good tolerance towards sensitive functional groups, delivering products in high yields. Experimental evidence supports the reversible C-I bond formation via a single electron mechanism.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2022)
Article
Chemistry, Multidisciplinary
Hongyi Chen, Li Chen, Ze He, Qingle Zeng
Summary: A transition metal-free synthesis of N-(arylthio/seleno)ethyl sulfoxidmines was achieved via blue light-promoted radical sulfoximido-chalcogenization of aliphatic and aromatic alkenes. The sulfoximidation process exhibited high chemoselectivity and broad substrate scope, providing good yields in the sulfoximido-chalcogenization of alkenes.
Article
Chemistry, Multidisciplinary
Alexey A. Akulov, Mikhail V. Varaksin, Anton N. Tsmokalyuk, Valery N. Charushin, Oleg N. Chupakhin
Summary: An innovative approach was used to achieve the C(sp(2))-H azolation of cyclic aldonitrones mediated by Selectfluor(R). Through a metal-free, visible-light-promoted cross-dehydrogenative C-N coupling reaction, a series of novel azaheterocyclic derivatives were obtained with yields up to 94%. Mechanistic studies suggest that this coupling reaction likely proceeds via a nitroxide-involving radical pathway.
Article
Chemistry, Organic
Zhe Zhou, Zachary S. Sales, Daniel J. Pippel, Michael Qian, Connor L. Martin
Summary: We present a photocatalyst-free, diastereoselective decarboxylative alkylation method for (hetero)aryl sulfinimines using redox-active esters under blue light. This mild and efficient protocol demonstrates its utility as a versatile synthetic tool, especially for medicinal chemists.
JOURNAL OF ORGANIC CHEMISTRY
(2022)
Article
Chemistry, Multidisciplinary
Haoyuan Li, Sen Li, Huimin Hu, Runbo Sun, Meixia Liu, Anjun Ding, Xiaoyong Liu, Wenlin Luo, Zhengjiang Fu, Shengmei Guo, Hu Cai
Summary: A visible-light-induced radical/radical cross-coupling reaction of quaternary ammonium salts and Hantzschs via C-N and C-C bond cleavage is reported, leading to the formation of 1,2-diphenylethanes. The synthetic approach provides a moderate to good yield and offers a method for constructing C(sp(3))-C(sp(3)) bonds.
CHEMICAL COMMUNICATIONS
(2023)
Article
Chemistry, Multidisciplinary
Feng Pan, Haohu Li, Xiaohua Wang, Liwen Luo, Yanfei Lin, Qingkai Yu, Wenlin Xie, Lianpeng Zhang
Summary: A general and convenient protocol for the visible light-promoted radical-mediated cascade spiro-cyclization/Michael addition of N-arylpropiolamides with thiophenols was developed. This method employs commercially available hydrochloric acid as a cheap promoter and air as a sustainable oxidant. The reaction conditions are tolerant towards many functional groups and produce sulfur-containing benzo[b]pyrrolo[2,1-c][1,4]oxazine-3,9-diones.
Article
Nanoscience & Nanotechnology
Phung Dinh Hoat, Yeonghun Yun, ByungJin Park, Pham Tien Hung, Vu Xuan Hien, Joon-Hyung Lee, Sangwook Lee, Young-Woo Heo
Summary: A thin film of Cs2TeI6 perovskite was prepared on a glass substrate via a non-solution process, and its gas-sensing properties, especially the high selectivity and low detection limit for NO2 gas, were studied. The results show the potential application of this sensor for NO2 gas sensing at room temperature.
SCRIPTA MATERIALIA
(2022)
Article
Biochemistry & Molecular Biology
Shuang Zhai, Wei Cai, Zhi-Xin Xiang, Cai-Yan Chen, Ying-Tang Lu, Ting-Ting Yuan
Summary: Blue light induces adventitious root formation through PIN-FORMED3-mediated auxin transport, demonstrating that light signaling plays a crucial role in the regulation of adventitious rooting in plants.
Article
Chemistry, Physical
Hiroki Nagashima, Hiraku Kishimoto, Risa Mutoh, Naotaka Terashima, Hirozo Oh-oka, Genji Kurisu, Hiroyuki Mino
JOURNAL OF PHYSICAL CHEMISTRY B
(2017)
Article
Chemistry, Physical
Hiroki Nagashima, Hiroyuki Mino
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2017)
Article
Chemistry, Physical
Masashi Hasegawa, Hiroki Nagashima, Reina Minobe, Takashi Tachikawa, Hiroyuki Mino, Yasuhiro Kobori
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2017)
Article
Physics, Atomic, Molecular & Chemical
Hiroki Nagashima, Hiroyuki Mino
APPLIED MAGNETIC RESONANCE
(2018)
Article
Biochemistry & Molecular Biology
Mizue Asada, Taishi Nishimura, Kentaro Ifuku, Hiroyuki Mino
BIOCHIMICA ET BIOPHYSICA ACTA-BIOENERGETICS
(2018)
Article
Chemistry, Physical
Hiroyuki Tsukuno, Kohei Ozeld, Itsuki Kobayashi, Osamu Hisatomi, Hiroyuki Mino
JOURNAL OF PHYSICAL CHEMISTRY B
(2018)
Article
Chemistry, Physical
Hiroyuki Mino, Hiroki Nagashima
JOURNAL OF PHYSICAL CHEMISTRY B
(2020)
Article
Chemistry, Physical
Shota Taguchi, Takumi Noguchi, Hiroyuki Mino
JOURNAL OF PHYSICAL CHEMISTRY B
(2020)
Article
Chemistry, Physical
Shota Taguchi, Liangliang Shen, Guangye Han, Yasufumi Umena, Jian-Ren Shen, Takumi Noguchi, Hiroyuki Mino
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2020)
Article
Multidisciplinary Sciences
Mai Duy Luu Trinh, Daichi Miyazaki, Sumire Ono, Jiro Nomata, Masaru Kono, Hiroyuki Mino, Tatsuya Niwa, Yuki Okegawa, Ken Motohashi, Hideki Taguchi, Toru Hisabori, Shinji Masuda
Summary: The study identified a chloroplast protein named TCR, which is involved in electron flow downstream of PSI, contributing to P700 oxidation. Loss of TCR resulted in significant growth reduction in the Arabidopsis pgr5-tcr double mutant, with abnormal oxidation and reduction in the plastoquinone pool.
Article
Plant Sciences
Hiroyuki Mino, Mizue Asada
Summary: This study identified two Mn2+ sites in PSII using PELDOR, with one Mn2+ ion binding to apo-PSII during deactivation of the oxygen-evolving complex. The site between His332 and Glu189 in the D1 polypeptide was found to be in close proximity to the Mn1 site in mature PSII. Additionally, the position between Asp170 and Glu189 in the D1 polypeptide was suggested as a potential initial high-affinity site for photoactivation based on comparisons with electron microscope structures.
PHOTOSYNTHESIS RESEARCH
(2022)
Article
Plant Sciences
Hiroyuki Mino
Summary: The temperature dependence of the formation of the g similar to 5 S-2 state electron paramagnetic resonance (EPR) signal in photosystem II (PSII) was investigated. It was found that the g similar to 5 signal can be produced at an illumination above 200 K, and its formation is half inhibited at approximately 215 K. The study also estimated the activation energy, enthalpy, and entropy of the g similar to 5 state formation.
PHOTOSYNTHESIS RESEARCH
(2022)
Article
Biology
Takuro Toda, Mikako Ito, Jun-ichi Takeda, Akio Masuda, Hiroyuki Mino, Nobutaka Hattori, Kaneo Mohri, Kinji Ohno
Summary: Research found that extremely low-frequency pulses of faint magnetic field can have negative effects on mitochondria, including the reduction of mitochondrial mass, membrane potential, and electron transport chain activity, as well as the induction of mitophagy. This study suggests that extremely low-frequency weak magnetic fields may have potential applications in treating diseases associated with mitochondrial imbalance.
COMMUNICATIONS BIOLOGY
(2022)
Article
Chemistry, Physical
Shinya Kosaki, Hiroyuki Mino
Summary: The high-spin S-2 state of Mn4CaO5 photosyntheticoxygen-evolving cluster was investigated using Q-band pulsed EPR, which showed main and satellite peaks. The spin state was evaluated with a zero-field splitting of D=0.465 cm(-1) and E/D=0.245, corresponding to S=5/2. The temperature dependence of the T (1) relaxation time revealed a 28.7 cm(-1) higher excited-state energy compared to the S=5/2 ground state. By comparing quantum mechanical models, a closed-cubane structure was determined to be the most probable for the S=5/2 state. The three-pulse ESEEM detected a nuclear signal assigned to nitrogen ligated to the Mn1 ion.
JOURNAL OF PHYSICAL CHEMISTRY B
(2023)
Article
Biochemistry & Molecular Biology
Kohei Ozeki, Hiroyuki Tsukuno, Hiroki Nagashima, Osamu Hisatomi, Hiroyuki Mino