Details of the Researcher

PHOTO

Takaaki Fujiwara
Section
Institute of Multidisciplinary Research for Advanced Materials
Job title
Assistant Professor
Degree
  • 博士(生命科学)(北海道大学)

  • 修士(生命科学)北海道大学

Research History 5

  • 2020/10 - Present
    Tohoku University Institute of Multidisciplinary Research for Advanced Materials Division of Organic- and Bio-materials Research Research Associate

  • 2018/07 - 2020/09
    シミックファーマサイエンス株式会社 CMC事業部 研究員

  • 2017/04 - 2018/06
    National Agriculture and Food Research Organization Advanced Analysis Center, NARO Contract Researcher

  • 2014/04 - 2017/03
    京都大学大学院 医学研究科 特定研究員

  • 2013/04 - 2014/03
    北海道大学大学院 先端生命科学研究院 博士研究員

Education 2

  • 北海道大学大学院 生命科学院 生命科学専攻(博士後期過程)

    2010/04 - 2013/03

  • 北海道大学大学院 生命科学院 生命科学専攻(博士前期過程)

    2008/04 - 2010/03

Committee Memberships 2

  • SPRUC放射光構造生物学研究会 幹事

    2022/06 - Present

  • 日本生物物理学会 分野別専門委員(糖結合タンパク質)

    2021/01 - Present

Professional Memberships 5

  • 日本農芸化学会

  • 日本生物物理学会

  • THE JAPANESE SOCIETY OF APPLIED GLYCOSCIENCE

  • PROTEIN SCIENCE SOCIETY OF JAPAN

  • THE CRYSTALLOGRAPHIC SOCIETY OF JAPAN

Research Interests 4

  • 糖質関連酵素

  • シリアルフェムト秒結晶構造解析

  • X線結晶構造解析

  • G-protein coupled receptor

Research Areas 1

  • Life sciences / Structural biochemistry /

Awards 2

  1. Young Scientist Award

    2024/06 Structural analysis of diterpene cyclase CotB2 at ambient temperature

  2. 平成25年度日本応用糖質科学会北海道支部 支部奨励賞

    2014/01 セロビオース 2-エピメラーゼの構造解析による異性化反応機構解明

Papers 16

  1. Rapid and reversible fluorescent probe enables repeated snapshot imaging of AMPA receptors during synaptic plasticity Peer-reviewed

    Kyohei Soga, Takaaki Fujiwara, Mayu Nakagawa, Akihiro Shibata, Hansel Adriel, Kenji Yatsuzuka, Wataru Kakegawa, Michisuke Yuzaki, Itaru Hamachi, Eriko Nango, Shigeki Kiyonaka

    Science Advances 11 (23) 2025/06/06

    DOI: 10.1126/sciadv.adt6683  

  2. Structural basis for the minimal bifunctional alginate epimerase AlgE3 from Azotobacter chroococcum Peer-reviewed

    Takaaki Fujiwara, Eriko Mano, Eriko Nango

    FEBS Letters 598 (11) 1422-1437 2024/06

    DOI: 10.1002/1873-3468.14886  

  3. Juglone, a Plant-Derived 1,4-Naphthoquinone, Binds to Hydroxylamine Oxidoreductase and Inhibits the Electron Transfer to Cytochrome c554 Peer-reviewed

    Yukie Akutsu, Takaaki Fujiwara, Rintaro Suzuki, Yuki Nishigaya, Toshimasa Yamazaki

    Applied and Enviromental Microbiology e0129123 2023/11

  4. Serial Femtosecond Crystallography Reveals that Photoactivation in a Fluorescent Protein Proceeds via the Hula Twist Mechanism Peer-reviewed

    Alisia Fadini, Christopher D.M. Hutchison, Dmitry Morozov, Jeffrey Chang, Karim Maghlaoui, Samuel Perrett, Fangjia Luo, Jeslyn C.X. Kho, Matthew G. Romei, R. Marc L. Morgan, Christian M. Orr, Violeta Cordon-Preciado, Takaaki Fujiwara, Nipawan Nuemket, Takehiko Tosha, Rie Tanaka, Shigeki Owada, Kensuke Tono, So Iwata, Steven G. Boxer, Gerrit Groenhof, Eriko Nango, Jasper J. van Thor

    Journal of the American Chemical Society 145 (29) 15796-15808 2023/07/07

    Publisher: American Chemical Society (ACS)

    DOI: 10.1021/jacs.3c02313  

    ISSN: 0002-7863

    eISSN: 1520-5126

  5. Structural snapshot of glycoside hydrolase family 8 endo-beta-1,4-glucanase capturing the state after cleavage of the scissile bond Peer-reviewed

    Takaaki Fujiwara, Ayumi Fujishima, Yui Nakamura, Kenji Tajima, Min Yao

    Acta Crystallographica Section D 78 (2) 228-237 2022/02

    Publisher: International Union of Crystallography (IUCr)

    DOI: 10.1107/s2059798321012882  

    ISSN: 2059-7983

    More details Close

    Bacterial cellulose (BC), which is produced by bacteria, is a biodegradable and biocompatible natural resource. Because of its remarkable physicochemical properties, BC has attracted attention for the development and manufacture of biomedical and industrial materials. In the BC production system, the enzyme endo-β-1,4-glucanase, which belongs to glycoside hydrolase family 8 (GH8), acts as a cleaner by trimming disordered cellulose fibers to produce high-quality BC. Understanding the molecular mechanism of the endo-β-1,4-glucanase would help in developing a reasonable biosynthesis of BC. Nevertheless, all of the steps in the reaction of this endo-β-1,4-glucanase are not clear. This study confirms the BC hydrolytic activity of the endo-β-1,4-glucanase from the BC-producing bacterium <italic>Enterobacter</italic> sp. CJF-002 (<italic>Eb</italic>BcsZ) and reports crystal structures of <italic>Eb</italic>BcsZ. Unlike in previously reported GH8 endo-β-1,4-glucanase structures, here the base catalyst was mutated (D242A) and the structure of this mutant bound to cellooligosaccharide [<italic>Eb</italic>BcsZ(D242A)CPT] was analyzed. The <italic>Eb</italic>BcsZ(D242A)CPT structure showed two cellooligosaccharides individually bound to the plus and minus subsites of <italic>Eb</italic>BcsZ. The glucosyl unit in subsite −1 presented a distorted 5 <italic>S</italic> 1 conformation, a novel snapshot of a state immediately after scissile-bond cleavage. In combination with previous studies, the reaction process of endo-β-1,4-glucanase is described and the β-1,4-glucan-trimming mechanism of <italic>Eb</italic>BcsZ is proposed. The <italic>Eb</italic>BcsZ(D242A)CPT structure also showed an additional β-1,4-glucan binding site on the <italic>Eb</italic>BcsZ surface, which may help to accept the substrate.

  6. Time-resolved serial femtosecond crystallography reveals early structural changes in channelrhodopsin International-journal Peer-reviewed

    Kazumasa Oda, Takashi Nomura, Takanori Nakane, Keitaro Yamashita, Keiichi Inoue, Shota Ito, Johannes Vierock, Kunio Hirata, Andrés D Maturana, Kota Katayama, Tatsuya Ikuta, Itsuki Ishigami, Tamaki Izume, Rie Umeda, Ryuun Eguma, Satomi Oishi, Go Kasuya, Takafumi Kato, Tsukasa Kusakizako, Wataru Shihoya, Hiroto Shimada, Tomoyuki Takatsuji, Mizuki Takemoto, Reiya Taniguchi, Atsuhiro Tomita, Ryoki Nakamura, Masahiro Fukuda, Hirotake Miyauchi, Yongchan Lee, Eriko Nango, Rie Tanaka, Tomoyuki Tanaka, Michihiro Sugahara, Tetsunari Kimura, Tatsuro Shimamura, Takaaki Fujiwara, Yasuaki Yamanaka, Shigeki Owada, Yasumasa Joti, Kensuke Tono, Ryuichiro Ishitani, Shigehiko Hayashi, Hideki Kandori, Peter Hegemann, So Iwata, Minoru Kubo, Tomohiro Nishizawa, Osamu Nureki

    eLife 10 2021/03/23

    Publisher: eLife Sciences Publications, Ltd

    DOI: 10.7554/elife.62389  

    eISSN: 2050-084X

    More details Close

    Channelrhodopsins (ChRs) are microbial light-gated ion channels utilized in optogenetics to control neural activity with light . Light absorption causes retinal chromophore isomerization and subsequent protein conformational changes visualized as optically distinguished intermediates, coupled with channel opening and closing. However, the detailed molecular events underlying channel gating remain unknown. We performed time-resolved serial femtosecond crystallographic analyses of ChR by using an X-ray free electron laser, which revealed conformational changes following photoactivation. The isomerized retinal adopts a twisted conformation and shifts toward the putative internal proton donor residues, consequently inducing an outward shift of TM3, as well as a local deformation in TM7. These early conformational changes in the pore-forming helices should be the triggers that lead to opening of the ion conducting pore.

  7. Structure of the dopamine D2 receptor in complex with the antipsychotic drug spiperone Peer-reviewed

    Dohyun Im, Asuka Inoue, Takaaki Fujiwara, Takanori Nakane, Yasuaki Yamanaka, Tomoko Uemura, Chihiro Mori, Yuki Shiimura, Kanako Terakado Kimura, Hidetsugu Asada, Norimichi Nomura, Tomoyuki Tanaka, Ayumi Yamashita, Eriko Nango, Kensuke Tono, Francois Marie Ngako Kadji, Junken Aoki, So Iwata, Tatsuro Shimamura

    Nature Communications 11 (1) 2020/12

    Publisher: Springer Science and Business Media LLC

    DOI: 10.1038/s41467-020-20221-0  

    eISSN: 2041-1723

    More details Close

    <title>Abstract</title>In addition to the serotonin 5-HT2A receptor (5-HT2AR), the dopamine D2 receptor (D2R) is a key therapeutic target of antipsychotics for the treatment of schizophrenia. The inactive state structures of D2R have been described in complex with the inverse agonists risperidone (D2Rris) and haloperidol (D2Rhal). Here we describe the structure of human D2R in complex with spiperone (D2Rspi). In D2Rspi, the conformation of the extracellular loop (ECL) 2, which composes the ligand-binding pocket, was substantially different from those in D2Rris and D2Rhal, demonstrating that ECL2 in D2R is highly dynamic. Moreover, D2Rspi exhibited an extended binding pocket to accommodate spiperone’s phenyl ring, which probably contributes to the selectivity of spiperone to D2R and 5-HT2AR. Together with D2Rris and D2Rhal, the structural information of D2Rspi should be of value for designing novel antipsychotics with improved safety and efficacy.

  8. High-viscosity sample-injection device for serial femtosecond crystallography at atmospheric pressure International-journal Peer-reviewed

    Yoshiaki Shimazu, Kensuke Tono, Tomoyuki Tanaka, Yasuaki Yamanaka, Takanori Nakane, Chihiro Mori, Kanako Terakado Kimura, Takaaki Fujiwara, Michihiro Sugahara, Rie Tanaka, R. Bruce Doak, Tatsuro Shimamura, So Iwata, Eriko Nango, Makina Yabashi

    Journal of Applied Crystallography 52 (6) 1280-1288 2019/12/01

    Publisher: International Union of Crystallography (IUCr)

    DOI: 10.1107/s1600576719012846  

    eISSN: 1600-5767

    More details Close

    A sample-injection device has been developed at SPring-8 Angstrom Compact Free-Electron Laser (SACLA) for serial femtosecond crystallography (SFX) at atmospheric pressure. Microcrystals embedded in a highly viscous carrier are stably delivered from a capillary nozzle with the aid of a coaxial gas flow and a suction device. The cartridge-type sample reservoir is easily replaceable and facilitates sample reloading or exchange. The reservoir is positioned in a cooling jacket with a temperature-regulated water flow, which is useful to prevent drastic changes in the sample temperature during data collection. This work demonstrates that the injector successfully worked in SFX of the human A2A adenosine receptor complexed with an antagonist, ZM241385, in lipidic cubic phase and for hen egg-white lysozyme microcrystals in a grease carrier. The injection device has also been applied to many kinds of proteins, not only for static structural analyses but also for dynamics studies using pump–probe techniques.

  9. Crystal Structures of Human Orexin 2 Receptor Bound to the Subtype-Selective Antagonist EMPA Peer-reviewed

    Ryoji Suno, Kanako Terakado Kimura, Takanori Nakane, Keitaro Yamashita, Junmei Wang, Takaaki Fujiwara, Yasuaki Yamanaka, Dohyun Im, Shoichiro Horita, Hirokazu Tsujimoto, Maki S. Tawaramoto, Takatsugu Hirokawa, Eriko Nango, Kensuke Tono, Takashi Kameshima, Takaki Hatsui, Yasumasa Joti, Makina Yabashi, Keiko Shimamoto, Masaki Yamamoto, Daniel M. Rosenbaum, So Iwata, Tatsuro Shimamura, Takuya Kobayashi

    Structure 26 (1) 7-19.e5 2018/01

    Publisher: Elsevier BV

    DOI: 10.1016/j.str.2017.11.005  

    ISSN: 0969-2126

  10. A three-dimensional movie of structural changes in bacteriorhodopsin Peer-reviewed

    Eriko Nango, Antoine Royant, Minoru Kubo, Takanori Nakane, Cecilia Wickstrand, Tetsunari Kimura, Tomoyuki Tanaka, Kensuke Tono, Changyong Song, Rie Tanaka, Toshi Arima, Ayumi Yamashita, Jun Kobayashi, Toshiaki Hosaka, Eiichi Mizohata, Przemyslaw Nogly, Michihiro Sugahara, Daewoong Nam, Takashi Nomura, Tatsuro Shimamura, Dohyun Im, Takaaki Fujiwara, Yasuaki Yamanaka, Byeonghyun Jeon, Tomohiro Nishizawa, Kazumasa Oda, Masahiro Fukuda, Rebecka Andersson, Petra Bath, Robert Dods, Jan Davidsson, Shigeru Matsuoka, Satoshi Kawatake, Michio Murata, Osamu Nureki, Shigeki Owada, Takashi Kameshima, Takaki Hatsui, Yasumasa Joti, Gebhard Schertler, Makina Yabashi, Ana-Nicoleta Bondar, Jorg Standfuss, Richard Neutze, So Iwata

    SCIENCE 354 (6319) 1552-1557 2016/12

    DOI: 10.1126/science.aah3497  

    ISSN: 0036-8075

    eISSN: 1095-9203

  11. Structural Insights into the Epimerization of beta-1,4-Linked Oligosaccharides Catalyzed by Cellobiose 2-Epimerase, the Sole Enzyme Epimerizing Non-anomeric Hydroxyl Groups of Unmodified Sugars Peer-reviewed

    Takaaki Fujiwara, Wataru Saburi, Hirokazu Matsui, Haruhide Mori, Min Yao

    JOURNAL OF BIOLOGICAL CHEMISTRY 289 (6) 3405-3415 2014/02

    DOI: 10.1074/jbc.M113.531251  

    ISSN: 0021-9258

    eISSN: 1083-351X

  12. Cellulose complementing factor (Ccp) is a new member of the cellulose synthase complex (terminal complex) in Acetobacter xylinum Peer-reviewed

    Naoki Sunagawa, Takaaki Fujiwara, Takanori Yoda, Shin Kawano, Yasuharu Satoh, Min Yao, Kenji Tajima, Tohru Dairi

    JOURNAL OF BIOSCIENCE AND BIOENGINEERING 115 (6) 607-612 2013/06

    DOI: 10.1016/j.jbiosc.2012.12.021  

    ISSN: 1389-1723

  13. Crystal structure of Ruminococcus albus cellobiose 2-epimerase: Structural insights into epimerization of unmodified sugar Peer-reviewed

    Takaaki Fujiwara, Wataru Saburi, Sota Inoue, Haruhide Mori, Hirokazu Matsui, Isao Tanaka, Min Yao

    FEBS LETTERS 587 (7) 840-846 2013/04

    DOI: 10.1016/j.febslet.2013.02.007  

    ISSN: 0014-5793

  14. The c-di-GMP recognition mechanism of the PilZ domain of bacterial cellulose synthase subunit A Peer-reviewed

    Takaaki Fujiwara, Keisuke Komoda, Naofumi Sakurai, Kenji Tajima, Isao Tanaka, Min Yao

    BIOCHEMICAL AND BIOPHYSICAL RESEARCH COMMUNICATIONS 431 (4) 802-807 2013/02

    DOI: 10.1016/j.bbrc.2012.12.103  

    ISSN: 0006-291X

    eISSN: 1090-2104

  15. Structure of bacterial cellulose synthase subunit D octamer with four inner passageways Peer-reviewed

    Song-Qing Hu, Yong-Gui Gao, Kenji Tajima, Naoki Sunagawa, Yong Zhou, Shin Kawano, Takaaki Fujiwara, Takanori Yoda, Daisuke Shimura, Yasuharu Satoh, Masanobu Munekata, Isao Tanaka, Min Yao

    PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA 107 (42) 17957-17961 2010/10

    DOI: 10.1073/pnas.1000601107  

    ISSN: 0027-8424

  16. Crystallization and preliminary X-ray studies of azoreductases from Bacillus sp B29 Peer-reviewed

    Daiki Ogata, Toshihiko Ooi, Takaaki Fujiwara, Seiichi Taguchi, Isao Tanaka, Min Yao

    ACTA CRYSTALLOGRAPHICA SECTION F-STRUCTURAL BIOLOGY AND CRYSTALLIZATION COMMUNICATIONS 66 (Pt 5) 503-505 2010/05

    DOI: 10.1107/S1744309110007785  

    ISSN: 1744-3091

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Misc. 22

  1. Molecular Movies using X-ray Free Electron Lasers: Recent Advances and Future Prospects Peer-reviewed

    Eriko Nango, Takaaki Fujiwara, Luo Fangila, So Iwata

    Journal of the crystallographic society of Japan 64 (4) 290-293 2022/12

  2. 光解離性化合物結合型AMPA受容体細胞外ドメインのシリアルフェムト秒結晶構造解析

    藤原孝彰, Hansel Adriel, 曽我恭平, 清中茂樹, 南後恵理子

    令和4年(2022年)度日本結晶学会年会要旨集 2022/11

  3. アルギン酸分解・変換酵素AlgEの立体構造解析

    藤原 孝彰, 南後 恵理子

    日本応用糖質科学会 2022年度大会要旨集 2022/08

  4. Science with X-rays in the 2050s

    2022/03

  5. GH8に属するエンドグルカナーゼBcsZの構造機能解析

    藤原孝彰, 藤島あゆみ, 中村結衣, 田島健二, 姚閔

    令和3年(2021年)度日本結晶学会年会要旨集 2021 2021/11

  6. Toward the development of time-resolved experimental system combined with the temperature jump technique

    Takaaki Fujiwara, Shigeki Owada, Eriko Nango

    2021/10

  7. バクテリアセルロース分解酵素BcsZの反応機構解明

    藤原孝彰, 藤島あゆみ, 中村結衣, 姚閔

    日本応用糖質科学会 2021年度大会要旨集 2021/08

  8. Nitrification inhibitor targeting for hydroxylamine oxidoreductase

    Yuki Nishigaya, Wataru Tsuchiya, Zui Fujimoto, Takaaki Fujiwara, Rintaro Suzuki, Hajime Tamaki, Toshimasa Yamazaki

    2020/09

  9. アルドース‐ケトース間の異性化反応を利用したセロビオース2‐エピメラーゼの反応機構の解析

    武藤洋彦, 佐分利亘, 藤原孝彰, 加藤公児, YAO Min, 森春英

    日本農芸化学会大会講演要旨集(Web) 2017 ROMBUNNO.3J33p07 (WEB ONLY) 2017/03/05

    ISSN: 2186-7976

  10. ヒスタミンH1受容体による抗ヒスタミン薬の認識機構

    藤原孝彰, 森本志保, 山中保明, 中根崇智, 平田邦生, 山下恵太郎, 岩田想, 岩田想, 島村達郎

    日本結晶学会年会講演要旨集 2016 86 2016/11/17

  11. Rhodothermus marinus JCM9785由来セロビオース2‐エピメラーゼの基質結合部位周辺アミノ酸残基の機能解析

    武藤洋彦, 佐分利亘, 藤原孝彰, YAO Min, 森春英

    日本農芸化学会大会講演要旨集(Web) 2015 2E32A08 (WEB ONLY) 2015/03/05

    ISSN: 2186-7976

  12. バクテリアセルロース合成細菌由来セルラーゼCeSZの構造・機能解析

    藤島あゆみ, 藤原孝彰, 加藤公児, 田島健次, 姚閔

    物構研サイエンスフェスタ要旨集 3rd 77 2015

  13. 自由電子レーザーを用いた膜蛋白質の系統的構造解析

    岩田想, 木村香菜子, 島村達郎, 南後恵理子, 田中智之, 西澤知宏, 濡木理, 田中里枝, 鈴木守, 桝田哲哉, 菅原道泰, 登野健介, 城地保昌, 亀島敬, SONG Changyong, 初井宇記, 矢橋牧名, 山下恵太郎, 保坂俊彰, 田辺弘明, 羽藤正勝, 有馬登志, 染谷友美, 白水美香子, 潘東青, 中津亨, 加藤博章, 溝端栄一, 北郷悠, 高木淳一, 山中保明, 藤原孝彰, 山下鮎美, 小林淳

    日本分子生物学会年会プログラム・要旨集(Web) 37th 2S15-6 (WEB ONLY) 2014

  14. 対称性を利用した結晶化促進タグの開発

    薦田圭介, 桜井直文, 藤原孝彰, 于健, 傅鵬宇, 田中良和, 田中勲, 姚閔

    日本結晶学会年会講演要旨集 2013 71 2013/10/12

  15. セロビオース2‐エピメラーゼの異性化反応機構の解明

    藤原孝彰, 佐分利亘, 松井博和, 森春英, 田中勲, 姚閔

    応用糖質科学 3 (3) 30 2013/08/20

    Publisher: 日本応用糖質科学会

    ISSN: 2185-6427

  16. PilZによるc‐di‐GMPの認識機構に関する構造学的研究

    藤原孝彰, 薦田圭介, 桜井直文, 田島健次, 田中勳, 姚閔

    日本結晶学会年会講演要旨集 2012 99 2012/10/25

  17. Ruminococcus albus由来セロビオース 2‐エピメラーゼ(RaCE)のX線結晶構造解析

    藤原孝彰, 佐分利亘, 井上聡太, 森春英, 松井博和, 姚閔, 田中勲

    応用糖質科学 2 (3) (53) 2012/08/20

    Publisher: 日本応用糖質科学会

    ISSN: 2185-6427

  18. 嫌気性ルーメン細菌Ruminococcus albus由来セロビオース 2‐エピメラーゼの立体構造解析

    藤原孝彰, 佐分利亘, 松井博和, 姚閔, 田中勲

    PFシンポジウム要旨集 29th 30 2012

  19. 酢酸菌セルロース合成におけるAxCesD N末端の機能解析

    砂川直輝, 藤原孝彰, 田島健次, YAO Min, 佐藤康治, 棟方正信, 田中勲, 大利徹

    セルロース学会年次大会講演要旨集 17th 110 2010/07/01

  20. 酢酸菌由来CesDとCcpAxの相互作用解析

    藤原孝彰, 尾瀬農之, 姚閔, 田島健次, 田中勲

    日本蛋白質科学会年会プログラム・要旨集 10th 144 2010/05/15

  21. Bacillus sp.B29由来アゾ還元酵素基質複合体の結晶構造解析

    OGATA DAIKI, TAGUCHI SEIICHI, MATSUMOTO KEN'ICHIRO, FUJIWARA TAKAAKI, TANAKA ISAO, YAO MIN, OI TOSHIHIKO

    日本生物工学会大会講演要旨集 61st 62-62 2009/08/25

    Publisher: 日本生物工学会

  22. 酢酸菌由来セルロース合成関連タンパク質の調製

    藤原孝彰, 尾瀬農之, 田島健次, 田中勲, YAO Min

    セルロース学会年次大会講演要旨集 16th 151-152 2009/06/20

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Presentations 30

  1. 難結晶性タンパク質に対する結晶化の検討

    藤原孝彰

    【潜在空間分子設計】第3回公開シンポジウム 2025/05/30

  2. Reaction intermediate structure of diterpene cyclase CotB2 captured under non-cryogenic condition

    Takaaki Fujiwara, Atika Nur Rochmah, Masahiko Taguchi, Takanori nakane, Shigeki Owada, Jungmin Kang, Luo Fangjia, Nipawan Nuemke, Chisato Higuchi, Eriko nango

    2024/12/16

  3. ジャスモン酸シグナル伝達関連因子の結晶構造解析に向けた取り組み

    藤原孝彰

    【潜在空間分子設計】第2回公開シンポジウム 2024/06/13

  4. Structure analysis of diterpene cyclase CotB2 at ambient temperature

    Takaaki Fujiwara

    The 24th Annual Meeting of the Protein Science Society of Japan 2024/06/12

  5. Pump-probe time-resolved experiments of microbial rhodopsin Invited

    Takaaki Fujiwara

    2024/03/12

  6. テルペン環化酵素CotB2の反応中間体構造の決定 Invited

    藤原孝彰

    新学術領域「高速分子動画」第6回若手オンラインセミナー 2024/01/18

  7. テルペン環化酵素CotB2の室温結晶構造解析

    藤原 孝彰

    新学術領域「高速分子動画」国際シンポジウム2023 2023/11/30

  8. アルギン酸分解・変換酵素ALgEの酵素特性解析

    藤原 孝彰, 間野 絵梨子, 南後恵理子

    日本応用糖質科学会2023年度大会 2023/09/13

  9. 光解離性化合物結合型AMPA受容体細胞外ドメインのシリアルフェムト秒結晶構造解析

    藤原 孝彰, Hansel Adriel, 曽我 恭平, 清中 茂樹, 南後 恵理子

    令和4年(2022年)度日本結晶学会年会 2022/11/27

  10. アルギン酸分解・変換酵素AlgEの立体構造解析

    藤原 孝彰, 南後 恵理子

    日本応用糖質科学会2022年度大会 2022/08/31

  11. Science with X-rays in the 2050s Invited

    Takaaki Fujiwara

    2022/03

  12. GH8に属するエンドグルカナーゼBcsZの構造機能解析

    藤原孝彰, 藤島あゆみ, 中村結衣, 田島健二, 姚閔

    令和3年(2021年)度日本結晶学会年会要旨集 2021/11

  13. Toward the development of time-resolved experimental system combined with the temperature jump technique

    Takaaki Fujiwara, Shigeki Owada, Eriko Nango

    2021/10

  14. バクテリアセルロース分解酵素BcsZの反応機構解明

    藤原孝彰, 藤島あゆみ, 中村結衣, 姚閔

    日本応用糖質科学会 2021年度大会要旨集 2021/08

  15. Nitrification inhibitor targeting for hydroxylamine oxidoreductase

    Yuki Nishigaya, Wataru Tsuchiya, Zui Fujimoto, Takaaki Fujiwara, Rintaro Suzuki, Hajime Tamaki, Toshimasa Yamazaki

    2020/09

  16. アルドース‐ケトース間の異性化反応を利用したセロビオース2‐エピメラーゼの反応機構の解析

    武藤洋彦, 佐分利亘, 藤原孝彰, 加藤公児, YAO Min, 森春英

    日本農芸化学会大会講演要旨集(Web) 2017/03/05

  17. ヒスタミンH1受容体による抗ヒスタミン薬の認識機構

    藤原孝彰, 森本志保, 山中保明, 中根崇智, 平田邦生, 山下恵太郎, 岩田想, 岩田想, 島村達郎

    日本結晶学会年会講演要旨集 2016/11/17

  18. Rhodothermus marinus JCM9785由来セロビオース2‐エピメラーゼの基質結合部位周辺アミノ酸残基の機能解析

    武藤洋彦, 佐分利亘, 藤原孝彰, YAO Min, 森春英

    日本農芸化学会大会講演要旨集(Web) 2015/03/05

  19. バクテリアセルロース合成細菌由来セルラーゼCeSZの構造・機能解析

    藤島あゆみ, 藤原孝彰, 加藤公児, 田島健次, 姚閔

    物構研サイエンスフェスタ要旨集 2015

  20. 自由電子レーザーを用いた膜蛋白質の系統的構造解析

    岩田想, 木村香菜子, 島村達郎, 南後恵理子, 田中智之, 西澤知宏, 濡木理, 田中里枝, 鈴木守, 桝田哲哉, 菅原道泰, 登野健介, 城地保昌, 亀島敬, SONG Changyong, 初井宇記, 矢橋牧名, 山下恵太郎, 保坂俊彰, 田辺弘明, 羽藤正勝, 有馬登志, 染谷友美, 白水美香子, 潘東青, 中津亨, 加藤博章, 溝端栄一, 北郷悠, 高木淳一, 山中保明, 藤原孝彰, 山下鮎美, 小林淳

    日本分子生物学会年会プログラム・要旨集(Web) 2014

  21. 対称性を利用した結晶化促進タグの開発

    薦田圭介, 桜井直文, 藤原孝彰, 于健, 傅鵬宇, 田中良和, 田中勲, 姚閔

    日本結晶学会年会講演要旨集 2013/10/12

  22. セロビオース2‐エピメラーゼの異性化反応機構の解明

    藤原孝彰, 佐分利亘, 松井博和, 森春英, 田中勲, 姚閔

    応用糖質科学 2013/08/20

  23. PilZによるc‐di‐GMPの認識機構に関する構造学的研究

    藤原孝彰, 薦田圭介, 桜井直文, 田島健次, 田中勳, 姚閔

    日本結晶学会年会講演要旨集 2012/10/25

  24. Ruminococcus albus由来セロビオース 2‐エピメラーゼ(RaCE)のX線結晶構造解析

    藤原孝彰, 佐分利亘, 井上聡太, 森春英, 松井博和, 姚閔, 田中勲

    応用糖質科学 2012/08/20

  25. 嫌気性ルーメン細菌Ruminococcus albus由来セロビオース 2‐エピメラーゼの立体構造解析

    藤原孝彰, 佐分利亘, 松井博和, 姚閔, 田中勲

    PFシンポジウム要旨集 2012

  26. 酢酸菌セルロース合成におけるAxCesD N末端の機能解析

    砂川直輝, 藤原孝彰, 田島健次, YAO Min, 佐藤康治, 棟方正信, 田中勲, 大利徹

    セルロース学会年次大会講演要旨集 2010/07/01

  27. 酢酸菌由来CesDとCcpAxの相互作用解析

    藤原孝彰, 尾瀬農之, 姚閔, 田島健次, 田中勲

    日本蛋白質科学会年会プログラム・要旨集 2010/05/15

  28. Bacillus sp.B29由来アゾ還元酵素基質複合体の結晶構造解析

    OGATA DAIKI, TAGUCHI SEIICHI, MATSUMOTO KEN'ICHIRO, FUJIWARA TAKAAKI, TANAKA ISAO, YAO MIN, OI TOSHIHIKO

    日本生物工学会大会講演要旨集 2009/08/25

  29. 酢酸菌由来セルロース合成関連タンパク質の調製

    藤原孝彰, 尾瀬農之, 田島健次, 田中勲, YAO Min

    セルロース学会年次大会講演要旨集 2009/06/20

  30. Structure analysis of diterpene cyclase CotB2 at ambient temperature

    2024/08/07

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Research Projects 7

  1. 化合物潜在空間のための天然物核内受容体リガンドライブラリーの構築

    上田 実, 藤原 孝彰

    Offer Organization: 日本学術振興会

    System: 科学研究費助成事業

    Category: 学術変革領域研究(A)

    2023/04 - 2028/03

  2. 時分割構造解析によるテルペン環化酵素の精密反応過程の追跡

    藤原 孝彰

    Offer Organization: 日本学術振興会

    System: 科学研究費助成事業

    Category: 基盤研究(C)

    Institution: 東北大学多元物質科学研究所

    2024/04 - 2027/03

  3. 糖加水分解酵素の動的構造解析による立体反転型機構の解明

    藤原 孝彰

    Offer Organization: 日本学術振興会

    System: 科学研究費助成事業

    Category: 基盤研究(C)

    Institution: 東北大学

    2021/04 - 2024/03

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    天然のハイドロゲルとして知られるバクテリアセルロース(BC)は,植物由来セルロースを凌駕する強度・保水力や,人工合成高分子ゲルでは見られない生体適合性や生分解性などの優れた物理化学的性質を兼ね備えている.これらのユニークな特徴を有するBCは人工血管や火傷被覆材等の医用材料としての利用が期待されており,実用化に向けて生産性を改善することが切望される.糖加水分解酵素CeSZはBCの生産性に関わることが知られており,CeSZの構造情報を得ることは,合理的なBC生産プロセス構築のために意義がある.そこで本研究では,X線自由電子レーザー(XFEL)を用いたシリアルフェムト秒結晶構造解析(SFX)により,CeSZの動的構造情報を取得し,その加水分解反応の分子メカニズムを明らかにすることを目的とする.令和3年度は,SFX測定に利用可能な微小結晶試料の調製方法を検討した.結晶化溶液の組成を検討することで,数十マイクロメートル角の微小結晶を調製することに成功した.また,バッチ法により結晶化させることで,数百マイクロリットルの微小結晶懸濁液試料を調製した.また,SFX測定に使用する微小結晶を用いた回折測定を実施し,微小結晶が良好な分解能を与えることを確認した.さらに,変異体CeSZとセロオリゴ糖の複合体構造を基に,加水分解反応機構の一端を明らかにした.

  4. Control of polymer structure by enzyme: structure-function relationship of cellulose synthase

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research

    Category: Grant-in-Aid for Scientific Research (A)

    Institution: Kyoto University

    2019/04 - 2023/03

  5. 選択的アゴニストによる植物の防御応答の分子メカニズム解明

    藤原 孝彰, 加治 拓哉

    Offer Organization: 東北大学多元物質科学研究所

    System: 令和3年度多元研プロジェクト

    2021/04 - 2022/03

  6. Trial for determining the structure of CXCR7

    Shimamura Tatsuro, SUGA Hiroaki, YAMANAKA Yasuaki, NOMURA Norimichi, FUJIWARA Takaaki, IM Dohyun

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research

    Category: Grant-in-Aid for Scientific Research (B)

    Institution: Kyoto University

    2015/04 - 2018/03

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    Chemokine receptor CXCR7 is a member of G protein coupled receptors (GPCR) and a potential drug target. CXCR7 is highly expressed in cancer cells and mediates tumor metastasis. Uniquely, CXCR7 does not couple to G protein but to beta-arrestin. The aim of this project is to determine the 3D structure of CXCR7. Currently, we have not succeeded to obtain crystals of CXCR7.

  7. Structure and functional study of the agonist-bound dopamine D1 receptor for the development of antiparkinson

    Fujiwara Takaai

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research

    Category: Grant-in-Aid for Young Scientists (B)

    Institution: Kyoto University

    2015/04 - 2017/03

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    The dopamine D1 receptor is one of the drug target for neurodegenerative disorders including Parkinson's disease. The structural information of the D1 receptor provides insights into the ligand recognition, which leads to the development of the novel drug for the treatment of Parkinson's disease. The aim of this study is to reveal the structure of the D1 receptor bound to an agonist as a potential antiparkinson drug. We designed expression constructs of the D1 receptor with fusion proteins into the disordered loops of the receptor. Then, we solubilized engineered receptor constructs and purified them. Further investigation for improvement of the yield of the purified receptors allows to accomplish crystallization and the following structure determination of the D1 receptor hearafter. On the other hands, we successfully crystallized the histamine H1 receptor, and determined the structures of the H1 receptor bound to the ligand, which reveled the interaction manner of the ligand.

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Teaching Experience 3

  1. Life Science B Tohoku University

  2. Exercises in Physical Chemistry A Tohoku University

  3. 物理化学演習B 東北大学