Search Results 1-20 of 3183

  • Structure of photosystem I-LHCI-LHCII from the green alga Chlamydomonas reinhardtii in State 2

    Huang Zihui , Shen Liangliang , Wang Wenda , Mao Zhiyuan , Yi Xiaohan , Kuang Tingyun , Shen Jian-Ren , Zhang Xing , Han Guangye

    … Photosystem I (PSI) and II (PSII) balance their light energy distribution absorbed by their light-harvesting complexes (LHCs) through state transition to maintain the maximum photosynthetic performance and to avoid photodamage. … In state 2, a part of LHCII moves to PSI, forming a PSI-LHCI-LHCII supercomplex. … Here we report the cryo-electron microscopy structure of a PSI-LHCI-LHCII supercomplex in state 2 from C. …

    Nature Communications 12(1), 1100, 2021-02-17

    IR 

  • Antenna arrangement and energy-transfer pathways of PSI-LHCI from the moss Physcomitrella patens

    Yan Qiujing , Zhao Liang , Wang Wenda , Pi Xiong , Han Guangye , Wang Jie , Cheng Lingpeng , He Yi-Kun , Kuang Tingyun , Qin Xiaochun , Sui Sen-Fang , Shen Jian-Ren

    … Plants harvest light energy utilized for photosynthesis by light-harvesting complex I and II (LHCI and LHCII) surrounding photosystem I and II (PSI and PSII), respectively. … Here, we report the structure of the PSI-LHCI supercomplex from the moss Physcomitrella patens (Pp) at 3.23 angstrom resolution solved by cryo-electron microscopy. … Our structure revealed that four Lhca subunits are associated with the PSI core in an order of Lhca1-Lhca5-Lhca2-Lhca3. …

    Cell Discovery 7(1), 10, 2021-02-16

    IR 

  • 2021-02-15

    Kurumaji Takashi , Nakajima Taro , Feoktystov Artem , Babcock Earl , Salhi Zahir , Ukleev Victor , Arima Taka-hisa , Kakurai Kazuhisa , Tokura Yoshinori

    Journal of the Physical Society of Japan 90(2), 024705-1-7, 2021-02

    DOI 

  • Effectiveness of the Parent-Child Social Skills Training Program for Children with Developmental Disorders: A quasi-experimental design

    Shibata Kimiko , Nishikata Hirokazu , Kawabata Sayoko , Miyadera Hiroko , Kuriki Yohei

    … Social skills were measured by self-evaluation (Social Skills Scale for Elementary School Children, Social Skills Self-Rating Scale for Adults: SS-A), information provider's evaluation (Vineland Adaptive Behavior Scales, Second Edition, Japanese version: VABS-II), and practitioner's evaluation (Role-Play Test for Children and Parents: RPT-CP), and parenting stress was measured with the Parenting Stress Index (PSI) before, immediately after, and at a 3-month follow-up after intervention. …

    Asian Journal of Occupational Therapy 17(1), 37-44, 2021

    J-STAGE 

  • Intrinsic Fluctuations in Transpiration Induce Photorespiration to Oxidize P700 in Photosystem I

    Furutani Riu , Makino Amane , Suzuki Yuij , Wada Shinya , Shimakawa Ginga , Miyake Chikahiro

    … Upon exposure to environmental stress, the primary electron donor in photosystem I (PSI), P700, is oxidized to suppress the production of reactive oxygen species that could oxidatively inactivate the function of PSI. …

    Plants 9(12), 1761, 2020-12

    IR 

  • Release and extraction of retained subfoveal perfluorocarbon liquid facilitated by subretinal BSS, vibration, and gravity: a case report

    Takahashi Kosuke , Kimura Shuhei , Hosokawa Mio Morizane , Shiode Yusuke , Doi Shinichiro , Matoba Ryo , Kanzaki Yuki , Yonekawa Yoshihiro , Morizane Yuki

    … To remove the retained PFCL, the internal limiting membrane overlying the subretinal injection site is first peeled to allow low-pressure (8 psi) transretinal BSS infusion, using a 41-gauge cannula, to slowly detach the macula. …

    BMC Ophthalmology 20(1), 427, 2020-10-23

    IR 

  • Privacy Preserving Data Integration Protocol  [in Japanese]

    長尾 佳高 , 宮地 充子

    コンピュータセキュリティシンポジウム2020論文集, 281-288, 2020-10-19

    IPSJ 

  • Structural basis for energy transfer in a huge diatom PSI-FCPI supercomplex

    Xu Caizhe , Pi Xiong , Huang Yawen , Han Guangye , Chen Xiaobo , Qin Xiaochun , Huang Guoqiang , Zhao Songhao , Yang Yanyan , Kuang Tingyun , Wang Wenda , Sui Sen-Fang , Shen Jian-Ren

    … Photosystem I (PSI) of diatoms is associated with a large number of fucoxanthin-chlorophyll a/c proteins (FCPIs). … We report the structure of PSI-FCPI from a diatom Chaetoceros gracilis at 2.38 Å resolution by single-particle cryo-electron microscopy. … PSI-FCPI is a monomeric supercomplex consisting of 12 core and 24 antenna subunits (FCPIs), and 326 chlorophylls a, 34 chlorophylls c, 102 fucoxanthins, 35 diadinoxanthins, 18 β-carotenes and some electron transfer cofactors. …

    Nature Communications 11(1), 5081, 2020-10-08

    IR 

  • Scientific Elucidation of Pyramid Power(1) (The 50th Symposium on Life information Science)

    高木 治 , 坂本 政道 , 世一 秀雄 , 河野 貴美子 , 山本 幹男

    Journal of International Society of Life Information Science 38(2), 130-160, 2020-09

  • Pressure Induced Topological Quantum Phase Transition in Weyl Semimetal Td-MoTe2

    Guguchia Zurab , dos Santos Antonio M. , von Rohr Fabian O. , Molaison Jamie J. , Banerjee Soham , Rhodes Daniel , Yin Jiaxin , Khasanov Rustem , Hone James , Uemura Yasutomo J. , Hasan M. Zahid , Luetkens Hubertus , Bozin Emil S. , Amato Alex

    Journal of the Physical Society of Japan 89(9), 094707-1-5, 2020-09

    DOI 

  • Structural basis for assembly and function of a diatom photosystem I-light-harvesting supercomplex

    Nagao Ryo , Kato Koji , Ifuku Kentaro , Suzuki Takehiro , Kumazawa Minoru , Uchiyama Ikuo , Kashino Yasuhiro , Dohmae Naoshi , Akimoto Seiji , Shen Jian-Ren , Miyazaki Naoyuki , Akita Fusamichi

    … Here, we report a 2.40-Å resolution structure of the diatom photosystem I (PSI)-FCPI supercomplex by cryo-electron microscopy. … The supercomplex is composed of 16 different FCPI subunits surrounding a monomeric PSI core. … Each FCPI subunit showed different protein structures with different pigment contents and binding sites, and they form a complicated pigment–protein network together with the PSI core to harvest and transfer the light energy efficiently. …

    Nature Communications 11(1), 2481, 2020-05-18

    IR 

  • Structural basis for assembly and function of a diatom photosystem I-light-harvesting supercomplex

    Nagao Ryo , Kato Koji , Ifuku Kentaro , Suzuki Takehiro , Kumazawa Minoru , Uchiyama Ikuo , Kashino Yasuhiro , Dohmae Naoshi , Akimoto Seiji , Shen Jian-Ren , Miyazaki Naoyuki , Akita Fusamichi

    … Here, we report a 2.40-angstrom resolution structure of the diatom photosystem I (PSI)-FCPI supercomplex by cryo-electron microscopy. … The supercomplex is composed of 16 different FCPI subunits surrounding a monomeric PSI core. … Each FCPI subunit showed different protein structures with different pigment contents and binding sites, and they form a complicated pigment-protein network together with the PSI core to harvest and transfer the light energy efficiently. …

    Nature Communications 11(1), 2020-05-18

    IR 

  • Structural basis for assembly and function of a diatom photosystem I-light-harvesting supercomplex

    Nagao Ryo , Kato Koji , Ifuku Kentaro , Suzuki Takehiro , Kumazawa Minoru , Uchiyama Ikuo , Kashino Yasuhiro , Dohmae Naoshi , Akimoto Seiji , Shen Jian-Ren , Miyazaki Naoyuki , Akita Fusamichi

    … Here, we report a 2.40-Å resolution structure of the diatom photosystem I (PSI)-FCPI supercomplex by cryo-electron microscopy. … The supercomplex is composed of 16 different FCPI subunits surrounding a monomeric PSI core. … Each FCPI subunit showed different protein structures with different pigment contents and binding sites, and they form a complicated pigment–protein network together with the PSI core to harvest and transfer the light energy efficiently. …

    Nature Communications (11), 2020-05-18

    IR 

  • Structure of a cyanobacterial photosystem I surrounded by octadecameric IsiA antenna proteins

    Akita Fusamichi , Nagao Ryo , Kato Koji , Nakajima Yoshiki , Yokono Makio , Ueno Yoshifumi , Suzuki Takehiro , Dohmae Naoshi , Shen Jian-Ren , Akimoto Seiji , Miyazaki Naoyuki

    … Iron-stress induced protein A (IsiA) is a chlorophyll-binding membrane-spanning protein in photosynthetic prokaryote cyanobacteria, and is associated with photosystem I (PSI) trimer cores, but its structural and functional significance in light harvesting remains unclear. … Here we report a 2.7-angstrom resolution cryo-electron microscopic structure of a supercomplex between PSI core trimer and IsiA from a thermophilic cyanobacterium Thermosynechococcus vulcanus. …

    Communications Biology 3(1), 232, 2020-05-11

    IR 

  • Structure of a cyanobacterial photosystem I surrounded by octadecameric IsiA antenna proteins

    Akita Fusamichi , Nagao Ryo , Kato Koji , Nakajima Yoshiki , Yokono Makio , Ueno Yoshifumi , Suzuki Takehiro , Dohmae Naoshi , Shen Jian-Ren , Akimoto Seiji , Miyazaki Naoyuki

    … Iron-stress induced protein A (IsiA) is a chlorophyll-binding membrane-spanning protein in photosynthetic prokaryote cyanobacteria, and is associated with photosystem I (PSI) trimer cores, but its structural and functional significance in light harvesting remains unclear. … Here we report a 2.7-angstrom resolution cryo-electron microscopic structure of a supercomplex between PSI core trimer and IsiA from a thermophilic cyanobacterium Thermosynechococcus vulcanus. …

    Communications Biology 3(1), 232, 2020-05-11

    IR 

  • DEVELOPMENT OF HIGH-YIELD FORMATION PROCESS OF COLLOIDAL Si NANOCRYSTAL PARTICLES FROM POROUS SILICON  [in Japanese]

    大坪 準

    … This thesis describes the development of novel high-yield formation process of colloidal Si-nc particles by laser- or thermally-induced fragmentation effect of porous silicon (PSi) in an organic solvent. … The maximum yield of Si-nc is ~25 mg from 50 mg of the raw PSi per experimental batch, and the formation efficiency from PSi to Si-nc is attained to be ~100% at an optimum experimental condition. …

    法政大学大学院紀要. 理工学・工学研究科編 (61), 1-3, 2020-03-24

    IR  DOI 

  • Photorespiration Enhances Acidification of the Thylakoid Lumen, Reduces the Plastoquinone Pool, and Contributes to the Oxidation of P700 at a Lower Partial Pressure of CO2 in Wheat Leaves

    Wada Shinya , Suzuki Yuji , Miyake Chikahiro

    … The oxidation of P700 in photosystem I (PSI) is a robust mechanism that suppresses the production of reactive oxygen species. … ΔpH across thylakoid membrane), indicating that cyclic electron flow around PSI did not contribute to H+ usage in photosynthesis/photorespiration. … These results indicate that the reduction-induced suppression of electron flow (RISE) suppresses the reduction of oxidized P700 in PSI under photorespiratory conditions. …

    Plants 9(3), 319, 2020-03

    IR 

  • Molecular Mechanism of Oxidation of P700 and Suppression of ROS Production in Photosystem I in Response to Electron-Sink Limitations in C3 Plants

    Miyake Chikahiro

    … The photosynthetic electron transport system absorbs photon energy to drive electron flow from Photosystem II (PSII) to Photosystem I (PSI). … That is, both PSII and PSI are full of electrons. … O2 is easily reduced to a superoxide radical (O2−) at the reducing side, i.e., the acceptor side, of PSI, which is the main production site of reactive oxygen species (ROS) in photosynthetic organisms. …

    Antioxidants 9(3), 230, 2020-03

    IR 

  • Excitonic Coupling on a Heliobacterial Symmetrical Type-I Reaction Center: Comparison with Photosystem I

    Kitoh-Nishioka Hirotaka , Shigeta Yasuteru , Itoh Shigeru , Kimura Akihiro

    … The excitonic couplings among 54 bacteriochlorophylls-g (BChl)-g, 4 BChl-g′, and 2 Chl-aF pigments were calculated in the type-I homodimeric reaction center (RC) of Heliobacterium modesticaldum (hRC) and compared with those in the photosystem I (PSI) type-I heterodimeric RC. …

    The Journal of Physical Chemistry B 124(2), 389-403, 2020-01-16

    IR 

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