Updated on 2021/11/04

写真a

 
YOKOYAMA, Yasunori
 
Organization
Graduate School of Engineering Applied Physics 2 Assistant Professor
Graduate School
Graduate School of Engineering
Undergraduate School
School of Engineering Physical Science and Engineering
Title
Assistant Professor
Contact information
メールアドレス

Degree 1

  1. 博士(工学) ( 東京農工大学 ) 

Research Areas 3

  1. Others / Others  / Biophysics

  2. Others / Others  / Protein Science

  3. Others / Others  / Photobiology

Professional Memberships 3

  1. Protein Science Society of Japan

  2. The Biophysical Society of Japan

  3. 日本物理学会

 

Papers 31

  1. Pore size distributions related with spontaneous purple membrane stacking in porous hydrogels Reviewed

    Morise Karasawa, Yasunori Yokoyama, Kingo Takiguchi, Hiroshi Takahashi, Takashi Kikukawa, Masashi Sonoyama, and Koshi Takenaka

    Journal of Physical Society of Japan   Vol. 90 ( 10 ) page: 103801-1 - 103801-5   2021.10

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

  2. Comparison of functionality and structural stability of bacteriorhodopsin reconstituted in partially fluorinated dimyristoylphosphatidylcholine liposomes with different perfluoroalkyl chain lengths Reviewed

    Hashimoto Mami, Murai Yuka, Morita Kohei, Kikukawa Takashi, Takagi Toshiyuki, Takahashi Hiroshi, Yokoyama Yasunori, Amii Hideki, Sonoyama Masashi

    BIOCHIMICA ET BIOPHYSICA ACTA-BIOMEMBRANES   Vol. 1863 ( 10 )   2021.10

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    Language:Japanese   Publishing type:Research paper (scientific journal)  

    DOI: 10.1016/j.bbamem.2021.183686

    Web of Science

  3. Giant negative thermal expansion of polycrystalline Ti2O3 induced by microstructural effects Reviewed

    Yoshifumi Kadowaki, Ryota Kasugai, Yasunori Yokoyama, Naoyuki Katayama, Yoshihiko Okamoto, and Koshi Takenaka

    Applied Physics Letters   Vol. 119 ( 17 ) page: 171901-01 - 171901-05   2021.10

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    Language:English   Publishing type:Research paper (scientific journal)  

  4. Effects of salt and gel network structures on purple membrane stacking in hydrogels immobilized with poly(vinyl alcohol) Reviewed

    Yokoyama Yasunori, Yano Shunsuke, Kurita Riku, Karasawa Morise, Tanaka Hikaru, Takahashi Hiroshi, Kikukawa Takashi, Sonoyama Masashi, Takenaka Koshi

    JOURNAL OF APPLIED PHYSICS   Vol. 129 ( 1 )   2021.1

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    Language:Japanese   Publishing type:Research paper (scientific journal)  

    DOI: 10.1063/5.0032546

    Web of Science

  5. Structural phase transition and giant negative thermal expansion in pyrophosphate Zn2-xMgxP2O7 Reviewed

    Yoshifumi Kadowaki, Ryota Kasugai, Yasunori Yokoyama, Naoyuki Katayama, Yoshihiko Okamoto, and Koshi Takenaka

    Applied Physics Letters     2021

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    Language:English   Publishing type:Research paper (scientific journal)  

  6. Annealing effects on negative thermal expansion properties of ball-milled beta-Cu1.8Zn0.2V2O7 fine particles Reviewed

    Warne-Lang V, Sato M., Ozeki M., Kadowaki Y., Yokoyama Y., Katayama N., Okamoto Y., Takenaka K.

    CERAMICS INTERNATIONAL   Vol. 46 ( 17 ) page: 27655 - 27659   2020.12

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    Language:Japanese   Publishing type:Research paper (scientific journal)  

    DOI: 10.1016/j.ceramint.2020.07.261

    Web of Science

  7. Regular-triangle trimer and charge order preserving the Anderson condition in the pyrochlore structure of CsW2O6 Reviewed

    Okamoto Yoshihiko, Amano Haruki, Katayama Naoyuki, Sawa Hiroshi, Niki Kenta, Mitoka Rikuto, Harima Hisatomo, Hasegawa Takumi, Ogita Norio, Tanaka Yu, Takigawa Masashi, Yokoyama Yasunori, Takehana Kanji, Imanaka Yasutaka, Nakamura Yuto, Kishida Hideo, Takenaka Koshi

    NATURE COMMUNICATIONS   Vol. 11 ( 1 )   2020.6

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    Language:Japanese   Publishing type:Research paper (scientific journal)  

    DOI: 10.1038/s41467-020-16873-7

    Web of Science

  8. Spray-dry synthesis of beta-Cu1.8Zn0.2V2O7 ceramic fine particles showing giant negative thermal expansion Reviewed

    Takenaka Koshi, Sato Miku, Mitamura Masaya, Yokoyama Yasunori, Katayama Naoyuki, Okamoto Yoshihiko

    JOURNAL OF THE AMERICAN CERAMIC SOCIETY   Vol. 103 ( 4 ) page: 2757 - 2763   2020.4

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    Language:Japanese   Publishing type:Research paper (scientific journal)  

    DOI: 10.1111/jace.16931

    Web of Science

  9. Negative Thermal Expansion of beta-Cu1.8Zn0.2V2O7 Ceramic Fine Particles Synthesized by a Spray-Drying Method Reviewed

    Takenaka Koshi, Sato Miku, Nishikawa Tomohiro, Omura Takuya, Yamada Nobuya, Yokoyama Yasunori, Katayama Naoyuki, Okamoto Yoshihiko

    JOURNAL OF THE JAPAN INSTITUTE OF METALS AND MATERIALS   Vol. 84 ( 5 ) page: 161 - 166   2020

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    Language:Japanese   Publishing type:Research paper (scientific journal)  

    DOI: 10.2320/jinstmet.J2019053

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  10. Effects of Y substitution on the electronic structure and charge dynamics of SmS Reviewed

    Yokoyama Y., Hasegawa H., Mizuno Y., Asai D., Okamoto Y., Suzuki H. S., Takehana K., Imanaka Y., Takenaka K.

    PHYSICAL REVIEW B   Vol. 100 ( 24 )   2019.12

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    Language:Japanese   Publishing type:Research paper (scientific journal)  

    DOI: 10.1103/PhysRevB.100.245143

    Web of Science

  11. Valence fluctuations and giant isotropic negative thermal expansion in Sm1-xRxS (R= Y, La, Ce, Pr, Nd) Reviewed

    Asai D., Mizuno Y., Hasegawa H., Yokoyama Y., Okamoto Y., Katayama N., Suzuki H. S., Imanaka Y., Takenaka K.

    APPLIED PHYSICS LETTERS   Vol. 114 ( 14 )   2019.4

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    Language:Japanese   Publishing type:Research paper (scientific journal)  

    DOI: 10.1063/1.5090546

    Web of Science

  12. Stability of the two-dimensional lattice of bacteriorhodopsin reconstituted in partially fluorinated phosphatidylcholine bilayers Reviewed

    Takahashi Hiroshi, Yoshino Masaru, Morita Kohei, Takagi Toshiyuki, Yokoyama Yasunori, Kikukawa Takashi, Amii Hideki, Kanamori Toshiyuki, Sonoyama Masashi

    BIOCHIMICA ET BIOPHYSICA ACTA-BIOMEMBRANES   Vol. 1861 ( 3 ) page: 631-642   2019.3

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1016/j.bbamem.2018.12.015

    Web of Science

  13. Giant isotropic negative thermal expansion in Y-doped samarium monosulfides by intra-atomic charge transfer Reviewed

    Takenaka Koshi, Asai Daigo, Kaizu Ryoichi, Mizuno Yosuke, Yokoyama Yasunori, Okamoto Yoshihiko, Katayama Naoyuki, Suzuki Hiroyuki S., Imanaka Yasutaka

    SCIENTIFIC REPORTS   Vol. 9   2019.1

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1038/s41598-018-36568-w

    Web of Science

  14. Microstructural effects on negative thermal expansion extending over a wide temperature range in beta-Cu1.8Zn0.2V2O7 Reviewed

    Katayama N., Otsuka A. K., Mitamura M., Yokoyama Y., Okamoto Y., Takenaka K.

    APPLIED PHYSICS LETTERS   Vol. 113 ( 18 )   2018.10

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1063/1.5055304

    Web of Science

  15. Spontaneous stacking of purple membranes during immobilization with physical cross-linked poly(vinyl alcohol) hydrogel with retaining native-like functionality of bacteriorhodopsin Reviewed

    Yasunori Yokoyama, Hikaru Tanaka, Shunsuke Yano, Hiroshi Takahashi, Takashi Kikukawa, Masashi Sonoyama, and Koshi Takenaka

    Journal of Applied Physics   Vol. 121 ( 20 ) page: 204701   2017.5

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

  16. Photoluminescence of poly(3,4-ethylenedioxythiophene)/poly(styrenesulfonate) in the visible region Reviewed

    Takeshi Koyama, Taiki Matsuno, Yasunori Yokoyama, and Hideo Kishida

    Journal of Materials Chemistry C     2015

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1039/C5TC01531F

  17. Dependence of Purple Membrane Bump Curvature on pH and Ionic Strength Analyzed Using Atomic Force Microscopy Combined with Solvent Exchange Reviewed

    Yasunori Yokoyama, Kosuke Yamada, Yosuke Higashi, Satoshi Ozaki, Haorang Wang, Naoki Koito, Naoya Watanabe, Masashi Sonoyama, and Shigeki Mitaku

    Journal of Physical Chemistry B   Vol. 118   page: 9322-9328   2014.8

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

  18. Physicochemical Studies of Bacteriorhodopsin Reconstituted in Partially Fluorinated Phosphatidylcholine Bilayers. Reviewed

    Masaru Yoshino, Takashi Kikukawa, Hiroshi Takahashi, Toshiyuki Takagi, Yasunori Yokoyama, Hideki Amii, Teruhiko Baba, Toshiyuki Kanamori, and Masashi Sonoyama

    Journal of Physical Chemistry B   Vol. 117   page: 5422-5429   2013

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    Language:English   Publishing type:Research paper (scientific journal)  

  19. Multiple Membrane Interactions and Versatile Vesicle Deformations Elicited by Melittin. Invited Reviewed

    Tomoyoshi Takahashi, Fumimasa Nomura, Yasunori Yokoyama, Yohko Tanaka-Takiguchi, Michio Homma, and Kingo Takiguchi

    Toxins   Vol. 5   page: 637-664   2013

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    Language:English   Publishing type:Research paper (scientific journal)  

  20. Effect of Lipid Phase Transition on Molecular Assembly and Structural Stability of Bacteriorhodopsin Reconstituted into Phosphatidylcholine Liposomes with Different Acyl-chain Lengths Reviewed

    Yasunori Yokoyama, Lumi Negishi, Taku Kitoh, Masashi Sonoyama, Yasuo Asami, and Shigeki Mitaku

    Journal of Physical Chemistry B   Vol. 114   page: 15706-15711   2010.12

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

  21. Structural Changes in Bacteriorhodopsin in Purple Membranes Induced by Irreversible Photobleaching with Heterogeneous and Homogeneous Stability Reviewed

    Yasunori Yokoyama, Masashi Sonoyama, and Shigeki Mitaku

    Photochemistry and Photobiology   Vol. 86   page: 297-301   2010.3

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

  22. 膜タンパク質―その物理と進化 Invited Reviewed

    美宅成樹、澤田隆介、辻敏之、横山泰範

    膜   Vol. 35 ( 2 ) page: 42-49   2010

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    Language:Japanese  

  23. Effect of Molecular Assembly on Photocycle of Reconstituted Bacteriorhodopsin: Significant Blue Shift of the Late M Photointermediate in the Liquid Crystalline Phase Reviewed

    Masashi Sonoyama, Takashi Kikukawa, Yasunori Yokoyama, Makoto Demura, Naoki Kamo, and Shigeki Mitaku

    Chemistry Letters   Vol. 38 ( 12 ) page: 1134-1135   2009.12

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  24. Bisphenol A weakens calcium binding affinity of site III and IV in C-terminal domain of bovine brain calmodulin Reviewed

    Koichi Murayama, Masashi Sonoyama, Tomoyoshi Terada, Yasunori Yokoyama, Masayuki Nara, Mihoko Tomida, and Sadayuki Matsuda

    Chemistry Letters   Vol. 38 ( 11 ) page: 1062-1063   2009.11

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    Ca2+-binding affinity of sites III and IV in C-terminal domain of calmodulin in the presence and absence of BPA using intrinsic Tyr fluorescence is reported. The titration curves were lower shifted for Ca2+ affinity in the presence of BPA, and Gibbs energy of calcium binding to both sites decreased. These results suggest that BPA weakens the Ca2+ affinity of domains III and IV of calmodulin.

  25. Structural Change of Bacteriorhodopsin in the Purple Membrane above pH 10 Decreases Heterogeneity of the Irreversible Photobleaching Components Reviewed

    Yaunori Yokoyama, Masashi Sonoyama, Tatsuhiko Nakano and Shigeki Mitaku

    Journal of Biochemistry   Vol. 142   page: 325-333   2007

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

  26. Inhomogeneous Stability of Bacteriorhodopsin in Purple Membrane Against Photobleaching at High Temperature Reviewed

    Yasunori Yokoyama, Masashi Sonoyama, Shigeki Mitaku

    PROTEINS: Structure, Function, and Bioinformatics   Vol. 54   page: 442-454   2004

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

  27. Irreversible Photobleaching of Bacteriorhodopsin in a High-temperature Intermediate State Reviewed

    Yasunori Yokoyama, Masashi Sonoyama, Shigeki Mitaku

    Journal of Biochemistry   Vol. 131   page: 785-790   2002

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

  28. Structural stability of high-temperature state of bacteriorhodopsin: a model of multi-state membrane proteins Reviewed

    Shigeki Mitaku, Yasunori Yokoyama, Masashi Sonoyama

    Journal of Photoscience   Vol. 9   page: 118-121   2002

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    Language:English   Publishing type:Research paper (scientific journal)  

  29. Kinetic measurements of irreversible photobleaching of bacteriorhodopsin in a high temperature state Reviewed

    Yasunori Yokoyama, Masashi Sonoyama, Shigeki Mitaku

    Journal of Photoscience   Vol. 9   page: 296-298   2002

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

  30. Phospholipids stabilize the secondary structure of the sodium-coupled branched-chain amino acid carrier of Pseudomonas aeruginosa Reviewed

    Yosihiko Uratani, Mieko Kobayashi, Yasunori Yokoyama, Tadakazu Maeda, Shigeki Mitaku, Toshimitsu Hoshino

    Biochimica et Biophysica Acta   Vol. 1435   page: 71-83   1999

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    Language:English   Publishing type:Research paper (scientific journal)  

  31. Structural stability of bacteriorhodopsin at alkaline pH Reviewed

    Masashi Sonoyama, Yasunori Yokoyama, Kunihiro Taira, Shigeki Mitaku

    Journal of Biosciences   Vol. 24   page: 67   1999

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    Language:English  

▼display all

Presentations 65

  1. SmSの電場誘起価数転移と体積変化

    岸田海斗、渋谷隼矢、長谷川遥加、横山泰範、岡本佳比古、片山尚幸、竹端寛治、今中康貴、鈴木博之、竹中康司

    日本物理学会2021年秋季大会  2021.9.23  日本物理学会

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    Event date: 2021.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:オンライン開催  

  2. Cu2V2O7の構造相転移と電場誘起歪

    渋谷隼矢、岸田海斗、横山泰範、片山尚幸、岡本佳比古、竹中康司

    日本物理学会2021年秋季大会  2021.9.22  日本物理学会

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    Event date: 2021.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:オンライン開催  

  3. Zn2-xMgxP2O7の構造相転移と負熱膨張

    門脇義史、加納雅人、横山泰範、片山尚幸、岡本佳比古、竹中康司

    日本物理学会2021年秋季大会  2021.9.22  日本物理学会

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    Event date: 2021.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:オンライン開催  

  4. Cu2-xZnxV2-yPyO7の構造パラメータと負熱膨張

    加納雅人、門脇義史、横山泰範、片山尚幸、岡本佳比古、竹中康司

    日本物理学会2021年秋季大会  2021.9.20  日本物理学会

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    Event date: 2021.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:オンライン開催  

  5. ハイドロゲル固体試料中のバクテリオロドプシンの機能・構造特性

    栗田陸, 矢野俊介, 田中輝, 横山泰範, 竹中康司, 高橋浩, 菊川峰志, 園山正史

    日本物理学会2018年秋季大会 

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    Event date: 2018.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:同志社大学京田辺キャンパス   Country:Japan  

  6. Sm1-xRxS (R=Y, Ce, Nd) の負熱膨張特性

    浅井大悟, 水野陽介, 長谷川遥加, 横山泰範, 岡本佳比古, 片山尚幸, 竹中康司, 鈴木博之, 今中康貴

    日本物理学会2018年秋季大会 

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    Event date: 2018.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:同志社大学京田辺キャンパス   Country:Japan  

  7. Thermal Stability of the Hexagonal Lattice Packing Structure of Bacteriorhodopsin in Partially Fluorinated Phospholipid Bilayers International conference

    (17) Masaru Yoshino, Hiroshi Takahashi, Yasunori Yokoyama, Toshiyuki Takagi, Hideki Amii, Toshiyuki Kanamori, Takashi Kikukawa, Masashi Sonoyama

    59th International Conference on the Bioscience of Lipids 

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    Event date: 2018.9

    Language:English   Presentation type:Poster presentation  

    Venue:University of Helsinki   Country:Finland  

  8. ハイドロゲル固体試料中の紫膜積層とゲルネットワーク構造

    横山泰範, 矢野俊介, 栗田陸, 田中輝, 竹中康司, 高橋浩, 菊川峰志, 園山正史

    第45回生体分子科学討論会 

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    Event date: 2018.6

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:大阪市立大学 田中記念館   Country:Japan  

  9. ハイドロゲル固体試料中の紫膜積層に対する静電遮蔽の効果

    栗田陸, 矢野俊介, 横山泰範, 竹中康司, 高橋浩, 園山正史

    第45回生体分子科学討論会 

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    Event date: 2018.6

    Language:Japanese   Presentation type:Poster presentation  

    Venue:大阪市立大学 田中記念館   Country:Japan  

  10. 単結晶Sm1-xYxSの負熱膨張特性

    浅井大悟, 水野陽介, 横山泰範, 岡本佳比古, 片山尚幸, 竹中康司, 鈴木博之, 今中康貴

    日本物理学会 第73回年次大会(2018年) 

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    Event date: 2018.3

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:東京理科大学(野田キャンパス)   Country:Japan  

  11. Comparative Study in Purple Membrane Stacking and Bacteriorhodopsin Functionality in Immobilized Samples with Various Hydrogels

    Shunsuke Yano, Hikaru Tanaka, Yasunori Yokoyama, Hiroshi Takahashi, Masashi Sonoyama, Takashi Kikukawa, and Koshi Takenaka

    55the Annual Meeting of the Biophysical Society of Japan 

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    Event date: 2017.9

    Language:English   Presentation type:Poster presentation  

    Venue:Kumamoto University   Country:Japan  

  12. Effects of Immobilization of Bacteriorhodopsin with Poly(Vinyl Alcohol) Hydrogels on Its Structural and Functional Properties

    Hikaru Tanaka, Yasunori Yokoyama, Hiroshi Takahashi, Takashi Kikukawa, Masashi Sonoyama, Koshi Takenaka

    54the Annual Meeting of the Biophysical Society of Japan 

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    Event date: 2016.11

    Language:English   Presentation type:Poster presentation  

    Venue:Tsukuba International Congress Center   Country:Japan  

    We previously reported the correlation between light-induced bleaching of a photochromic protein bacteriorhodopsin (bR) and change in its 2D-crystalline state. Immobilization of bR with keeping its structure and function is necessary to apply this relation to a novel optical device. In this work, structural and functional properties of bR in purple membrane (PM) in poly(vinyl alcohol) (PVA) hydrogel were studied since it can possess abundant water in matrix. Visible circular dichroism and X-ray diffraction analysis showed native-like 2D-crystal as well as PM stacking during gelation. Transient absorption exhibited little influence on bR photocycle in immobilized PM/PVA samples. A model for PM stacking during gelation bR will be presented from these experimental results.

  13. Effects of Lipid Phase Transition on Chromophore Regeneration of Bleached Bacteriorhodopsin in Bilayer Vesicles by Blue Light Irradiation

    Shunsuke Yano, Kentarou Motegi, Hikaru Tanaka, Yasunori Yokoyama, Masashi Sonoyama, Koshi Takenaka

    54the Annual Meeting of the Biophysical Society of Japan 

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    Event date: 2016.11

    Language:English   Presentation type:Poster presentation  

    Venue:Tsukuba International Congress Center   Country:Japan  

    Bacteriorhodopsin (bR), a photochromic membrane protein, is one of candidate for industrial applications. We found out that reconstituted bR undergoes light-induced bleaching above lipid phase transition temperature where bR crystalline array is melt. Though complete regeneration of the bleached chromophore is preferred for the application, only ~70% regeneration by blue light irradiation was reported for bR in purple membrane. We elucidate the effects of lipid phase transition on the blue light regeneration of bR in proteoliposomes to improve the regeneration rate. The regeneration rate reached above 90% in the liquid crystalline phase, whereas it bottomed out at ~70% at gel phase at which bR forms native-like crystal. The cause of high regeneration rate is discussed.

  14. ハイドロゲル中に固定化された紫膜バクテリオロドプシンの機能・構造特性

    田中輝、横山泰範、高橋浩、園山正史、竹中康司

    第43回生体分子科学討論会 

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    Event date: 2016.6

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:名古屋大学   Country:Japan  

  15. Multiple Membrane Interactions and Vesicle Deformations Elicited by Melittin

    Tomoyoshi Takahashi, Fumimasa Nomura, Yasunori Yokoyama, Yohko Tanaka-Takiguchi, and Kingo Takiguchi

    52nd Annual Meeting of the Biophysical Society of Japan 

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    Event date: 2014.9

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  16. Dependence of Purple Membrane Bump Curvature on pH and Ionic Strength Analyzed by Atomic Force Microscopy Combined with Solvent Exchange

    Yasunori Yokoyama, Kosuke Yadama, Yosuke Higashi, Satoshi Ozaki, Haorang Wang, Naoki Koito, Masashi Sonoyama, and Shigeki Mitaku

    52nd Annual Meeting of the Biophysical Society of Japan 

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    Event date: 2014.9

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  17. Low Affinity of bacteriorhodopsin to partially fluorinated phosphatidylcholine in reconstituted membrane

    Masaru Yoshino, Kenji Kanayama, Takashi Kikukawa, Toshiyuki Takagi, Hiroshi Takahashi, Yasunori Yokoyama, Hideki Amii, Toshiyuki Kanamori, and Masashi Sonoyama

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    Event date: 2013.10

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  18. Curvature of Bump Structure on Purple Membrane Depending on pH and Ionic Strength Analyzed by Atomic Force Microscopy

    Yasunori Yokoyama, Kosuke Yamada, Yosuke Higashi, Satoshi Ozaki, Haorang Wang, Naoki Koito, Naoya Watanabe, Masashi Sonoyama, and Shigeki Mitaku

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    Event date: 2013.10

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  19. リン脂質リポソームに再構成したバクテリオロドプシンの構造・機能に対するアシル鎖部分フッ素化の影響

    吉野賢、菊川峰志、高橋浩、高木俊之、横山泰範、網井秀樹、金森敏幸、園山正史

    第64回コロイドおよび界面化学討論会 

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    Event date: 2013.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:名古屋工業大学   Country:Japan  

  20. PEDOT-PSS膜の可視光領域における発光スペクトル

    松野泰己、横山泰範、小山剛史、岸田英夫

    第74回応用物理学会秋季学術講演会 

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    Event date: 2013.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:同志社大学京田辺キャンパス   Country:Japan  

  21. 部分フッ素化リン脂質膜中に再構成したバクテリオロドプシンの光サイクルと二次元格子構造について

    高橋浩,吉野賢,菊川峰志,横山泰範,網井秀樹,馬場照彦,金森敏幸,園山正史

    物構研サイエンスフェスタ(第30回PFシンポジウム、第1回KENSシンポジウム、第1回MSLシンポジウム) 

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    Event date: 2013.3

    Language:Japanese   Presentation type:Poster presentation  

    Venue:つくば国際会議場エポカル   Country:Japan  

  22. Analysis of DNA-binding sites using novel amino acid index for molecular recognition (MR-index)

    Katsutoshi Hibino, Yasunori Yokoyama, Shigeki Mitaku

    The 50th Annual Meeting of the Biophysical Society of Japan 

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    Event date: 2012.9

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  23. Effects of archaeal lipids removal in purple membrane upon bump structure of membrane surface and bacteriorhodopsin conformations

    Kosuke Yamada, Yasunori Yokoyama, Shigeki Mitaku

    The 50th Annual Meeting of the Biophysical Society of Japan 

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    Event date: 2012.9

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  24. Physical characteristics of amino acid fragments around point mutation with disease susceptibility in apolipoproteins

    Ryota Masai, Yasunori Yokoyama, Shigeki Mitaku

    The 50th Annual Meeting of the Biophysical Society of Japan 

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    Event date: 2012.9

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  25. 紫膜表面の隆起形状ならびにバクテリオロドプシン分子構造へ及ぼす紫膜中の古細菌型脂質除去の影響

    山田浩輔, 横山泰範, 美宅成樹

    第12回日本蛋白質科学会年会 

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    Event date: 2012.6

    Language:Japanese   Presentation type:Poster presentation  

    Venue:名古屋国際会議場   Country:Japan  

  26. Reconstitution of bacteriorhodopsin into partially fluorinated phosphatidylcholine liposomes

    Masaru Yoshino, Takashi Kikukawa, Yasunori Yokoyama, Toshiyuki Takagi, Hiroshi Takahashi, Makoto Demura, Taruhiko Baba, Toshiyuki Kanamori, Masashi Sonoyama

    The 49th Annual Meeting of the Biophysical Society of Japan 

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    Event date: 2011.9

    Language:English   Presentation type:Oral presentation (general)  

    Country:Japan  

  27. Bumps on delipidated purple membrane analyzed by AFM

    Kosuke Yamada, Satoshi Ozaki, Yasunori Yokoyama, Shigeki Mitaku

    The 49th Annual Meeting of the Biophysical Society of Japan 

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    Event date: 2011.9

    Language:English   Presentation type:Oral presentation (general)  

    Country:Japan  

  28. Role of archaeal lipid in molecular assembly and stability of bacteriorhodopsin reconstituted into dipalmitoylphosphatidylcholine bilayer

    Yasunori Yokoyama, Taku Kitoh, Masashi Sonoyama, Shigeki Mitaku

    The 49th Annual Meeting of the Biophysical Society of Japan 

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    Event date: 2011.9

    Language:English   Presentation type:Oral presentation (general)  

    Country:Japan  

  29. Effect of archaeal lipid upon molecular assembly and stability of bacteriorhodopsin reconstituted into artificial phospholipid bilayers

    11th Annual Meeting of Protein Science Society of Japan 

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    Event date: 2011.6

    Language:Japanese   Presentation type:Poster presentation  

    Country:Japan  

  30. Effect of partial fluorination of hydrophobic chains in phosphatidylcholine on structure and function of bacteriorhodopsin reconstituted into artificial lipid vesicles

    The 4th International Symposium on Molecular Science of Fluctuations toward Biological Functions 

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    Event date: 2010.12

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  31. 新規部分フッ素化フォスファチジルコリン小胞への膜タンパク質バクテリオロドプシンの再構成

    吉野賢、菊川峰志、横山泰範、高木俊之、高橋浩、出村誠、馬場照彦、金森敏幸、園山 正史

    日本化学会関東支部群馬地区地域懇談会 

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    Event date: 2010.11

    Language:Japanese   Presentation type:Poster presentation  

    Country:Japan  

  32. Effect of molecular assembly upon structure and structural stability of bacteriorhodopsin reconstituted into phospholipid liposomes

    48th Annual Meeting of the Biophysical Society of Japan 

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    Event date: 2010.9

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

    Taku Kitoh, Yasunori Yokoyama, Rumi Negishi, Masashi Sonoyama, Yasuo Asami, Shigeki Mitaku

  33. Analysis of bumps structure of purple membrane by atomic force microscopy observation

    48th Annual Meeting of the Biophysical Society of Japan 

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    Event date: 2010.9

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

    Satoshi Ozaki, Yasunori Yokoyama, Shigeki Mitaku

  34. AFM single-molecule force spectroscopy of bacteriorhodopsin in delipidated purple membrane

    48th Annual Meeting of the Biophysical Society of Japan 

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    Event date: 2010.9

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

    Kosuke Yamada, Yosuke Higashi, Tatsuya Yamada, Satoshi Ozaki, Yasunori Yokoyama, Shigeki Mitaku

  35. Interaction between Calmodulin and Bisphenol A investigated by Isothermal Calorimetry

    48th Annual Meeting of the Biophysical Society of Japan 

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    Event date: 2010.9

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  36. Melittin structure that is taken place during liposomal lysis

    48th Annual Meeting of the Biophysical Society of Japan 

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    Event date: 2010.9

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  37. カルモデュリンのカルシウム結合能と構造におけるビスフェノールAの影響

    村山幸一、寺田知新、園山正史、横山泰範、奈良雅之、松田禎行

    第10回日本蛋白質科学会年会 

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    Event date: 2010.6

    Language:Japanese   Presentation type:Poster presentation  

    Country:Japan  

  38. アシル鎖長の異なる3種類の脂質膜リポソームに再構成されたバクテリオロドプシンにおける分子集合状態ならびに構造安定性に対する脂質膜相転移の影響

    鬼頭琢、横山泰範、根岸瑠美、麻見安雄、園山正史、美宅成樹

    第10回日本蛋白質科学会年会 

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    Event date: 2010.6

    Language:Japanese   Presentation type:Poster presentation  

    Country:Japan  

  39. Effect of lipid phase transition upon molecular assembly state and structural stability of bacteriorhodopsin reconstituted into three kinds of phospholipid liposomes with different acyl-chain length. International conference

    International Symposium on Fifty Years of Biophysics Research at Nagoya University 

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    Event date: 2010.3

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  40. 紫膜におけるタンパク質分子間相互作用の変化が及ぼす分子構造・構造安定性への影響

    横山泰範

    (財)新世代研究所バイオSPM研究会「Bio-Nano Mechanics 生体分子間相互作用の力学計測」 

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    Event date: 2009.11

    Language:Japanese   Presentation type:Oral presentation (invited, special)  

    Country:Japan  

  41. Bisphenol A weakens calcium binding affinity of calmodulin.

    47th Annual Meeting of the Biophysical Society of Japan 

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    Event date: 2009.10

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  42. Effect of protein-lipid interaction on irreversible photobleaching of bacteriorhodopsin in purple membrane.

    47th Annual Meeting of the Biophysical Society of Japan 

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    Event date: 2009.10

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  43. Identification of cytoplasmic and extracellular side of bacteriorhodopsin for force spectroscopy.

    47th Annual Meeting of the Biophysical Society of Japan 

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    Event date: 2009.10

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  44. Photobleaching of bacteriorhodopsin reconstituted in DMPC and DPPC bilayer.

    47th Annual Meeting of the Biophysical Society of Japan 

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    Event date: 2009.10

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  45. 紫膜の厚さおよび長距離構造の原子間力顕微鏡観測

    尾崎聡、東陽介、渡邉直哉、横山泰範、園山正史、美宅成樹

    第3回分子科学討論会 

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    Event date: 2009.9

    Language:Japanese   Presentation type:Poster presentation  

    Country:Japan  

  46. 紫膜バクテリオロドプシンの光退色現象におけるタンパク質―脂質間相互作用の影響

    成重太助、横山泰範、園山正史、美宅成樹

    第9回日本蛋白質科学会年会 

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    Event date: 2009.5

    Language:Japanese   Presentation type:Poster presentation  

    Country:Japan  

  47. 脂質二層膜に再構成されたバクテリオロドプシンの脂質膜相転移への影響

    鬼頭琢、根岸瑠美、横山泰範、園山正史、美宅成樹

    第9回日本蛋白質科学会年会 

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    Event date: 2009.5

    Language:Japanese   Presentation type:Poster presentation  

    Country:Japan  

  48. バクテリオロドプシンのアルカリ化に伴う二次元結晶構造の崩壊過程

    東陽介、尾崎聡、渡邉直哉、横山泰範、園山正史、美宅成樹

    第9回日本蛋白質科学会年会 

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    Event date: 2009.5

    Language:Japanese   Presentation type:Poster presentation  

    Country:Japan  

  49. 紫膜中のバクテリオロドプシンの光退色による構造変化

    横山泰範、園山正史、美宅成樹

    第46回日本生物物理学会年会 

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    Event date: 2008.12

    Language:Japanese   Presentation type:Poster presentation  

    Country:Japan  

  50. 脱脂質した紫膜の高温化における光退色現象に対する影響

    成重太助、横山泰範、園山正史、美宅成樹

    第46回日本生物物理学会年会 

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    Event date: 2008.12

    Language:Japanese   Presentation type:Poster presentation  

    Country:Japan  

  51. Structural changes of bacteriorhodopsin in purple membrane induced by irreversible photobleaching International conference

    13th International Conference of Retinal Proteins 

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    Event date: 2008.6

    Language:English   Presentation type:Poster presentation  

  52. Effect of molecular assembly on photointermediates of bR reconstituted into dimyristoylphosphatidylcholine vesicles International conference

    13th International Conference of Retinal Proteins 

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    Event date: 2008.6

    Language:English   Presentation type:Poster presentation  

  53. 合成脂質膜に再構成したバクテリオロドプシンの光機能中間体に対する脂質膜相挙動の影響

    園山正史、菊川峰志、横山泰範、美宅成樹

    第8回日本蛋白質科学会年会 

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    Event date: 2008.4

    Language:Japanese   Presentation type:Poster presentation  

    Country:Japan  

  54. 植物における葉緑体・ミトコンドリアタンパク質の局在予測

    崎山則征、兪子豊、横山泰範、園山正史、美宅成樹

    第8回日本蛋白質科学会年会 

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    Event date: 2008.4

    Language:Japanese   Presentation type:Poster presentation  

    Country:Japan  

  55. 合成脂質膜に再構成したバクテリオロドプシンの光サイクルに対する分子集合状態の影響

    園山正史、菊川峰志、横山泰範、美宅成樹

    第45回日本生物物理学会年会 

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    Event date: 2007.12

    Language:Japanese   Presentation type:Poster presentation  

    Country:Japan  

  56. 中性およびアルカリpH条件下における光退色が引き起こす紫膜中のバクテリオロドプシンの構造変化

    横山泰範、園山正史、美宅成樹

    第45回日本生物物理学会年会 

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    Event date: 2007.12

    Language:Japanese   Presentation type:Poster presentation  

    Country:Japan  

  57. Kinetic study for irreversible photobleaching of bacteriorhodopsin in purple membrane at alkaline pH. International conference

    5th East Asian Biophysics Symposium and 44th Annual Meeting of the Biophysical Society of Japan 

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    Event date: 2006.11

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  58. Structural properties and irreversible photobleaching behaviors of bacteriorhodopsin in purple membrane at alkaline pH. International conference

    12th ICRP Satellite Meeting in Nagoya 

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    Event date: 2006.6

    Language:English   Presentation type:Poster presentation  

  59. Relationship between changes in irreversible photobleaching behavior and molecular structure of bacteriorhodopsin in purple membrane above pH 10. International conference

    12th International Conference on Retinal Proteins 

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    Event date: 2006.6

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  60. アルカリ性領域における熱変性状態からのバクテリオロドプシン再生実験

    杉山浩之、横山泰範、ガンガ D. ギミリ、園山正史、美宅成樹

    第43回日本生物物理学会年会 

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    Event date: 2005.11

    Language:Japanese   Presentation type:Poster presentation  

    Country:Japan  

  61. バクテリオロドプシンのアルカリ化に伴う構造変化と光退色現象

    横山泰範、園山正史、美宅成樹

    第43回日本生物物理学会年会 

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    Event date: 2005.11

    Language:Japanese   Presentation type:Poster presentation  

    Country:Japan  

  62. アルカリpHにおけるバクテリオロドプシンの構造変化と不可逆な光退色現象

    横山泰範、中野辰彦、園山正史、美宅成樹

    第5回日本蛋白質科学会年会 

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    Event date: 2005.6

    Language:Japanese   Presentation type:Poster presentation  

    Country:Japan  

  63. バクテリオロドプシンの非天然状態の構造

    園山正史、横山泰範、中野辰彦、美宅成樹

    分子研研究会「ロドプシンの仲間・G蛋白質共役型レセプターの機能と構造」 

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    Event date: 2005.6

    Language:Japanese   Presentation type:Poster presentation  

    Country:Japan  

  64. アルカリpHにおけるバクテリオロドプシンの構造安定性

    横山泰範、園山正史、美宅成樹

    分子研研究会「ロドプシンの仲間・G蛋白質共役型レセプターの機能と構造」 

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    Event date: 2005.6

    Language:Japanese   Presentation type:Poster presentation  

    Country:Japan  

  65. アルカリ条件下における紫膜中のバクテリオロドプシン凝集状態の変化が及ぼすタンパク質構造およびレチナール異性化状態の変化

    横山泰範、中野辰彦、園山正史、美宅成樹

    日本化学会第85春季年会 

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    Event date: 2005.3

    Language:Japanese   Presentation type:Poster presentation  

    Country:Japan  

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KAKENHI (Grants-in-Aid for Scientific Research) 3

  1. Valence fluctuations and volumetric functions in samarium monosulfide SmS

    Grant number:20H00346  2020.4 - 2023.3

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    Authorship:Coinvestigator(s) 

  2. Development of methods in protein immobilization with artificial life environments for application of photo-receptor membrane protein bacteriorhodopsin to a new optical functional device

    Grant number:17K05931  2017.4 - 2020.3

    Yasunori Yokoyama

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    Authorship:Principal investigator 

    Grant amount:\4810000 ( Direct Cost: \3700000 、 Indirect Cost:\1110000 )

    To apply a photo-receptor membrane protein bacteriorhodopsin (bR) to a new optical functional device, we developed methods in protein immobilization with artificial life environments. The immobilization methods that bR can function as if in the solution environments was searched and the immobilized bR samples were made. The immobilization samples by hydrogels in which can retain huge water content showed that bR can keep its native functionality even in the solid samples, by an assessment by a time-resolved absorption spectroscopy. We studied about a mechanism for the purple membrane stacking in the hydrogel which was discovered in our previous research. We revealed that both the periodic structure of the purple membranes in solution emerged as a result of balance between electrostatic repulsive force and attractive depletion force and immobilization with a porous gel network structure.

  3. タンパク質のファミリー分布に注目したタンパク質ワールドの研究

    2008.4 - 2011.3

    科学研究費補助金  基盤研究(B)

    美宅成樹

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    Authorship:Coinvestigator(s)