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Kawaguchi Shinichi
河口 真一
Kawaguchi Shinichi
河口 真一
Graduate School of Frontier Biosciences Department of Frontier Biosciences,Assistant Professor

Research History 9

  1. 2025/04 - Present
    The University of Osaka Graduate School of Frontier Biosciences

  2. 2014/10 - 2024/09
    Osaka University Graduate School of Frontier Biosciences

  3. 2005/07 - 2014/09
    テマセク生命科学研究所(シンガポール) リサーチフェロー

  4. 2004/04 - 2005/03
    NECソフト株式会社 主任研究員

  5. 2002/04 - 2004/03
    日本学術振興会 海外特別研究員

  6. 2000/09 - 2004/03
    カーネギー研究所(米国) ポスドク研究員

  7. 1998/10 - 2000/08
    理化学研究所(播磨) 基礎科学特別研究員

  8. 1998/04 - 1998/09
    理化学研究所(和光) 奨励研究員

  9. 1995/04 - 1998/03
    日本学術振興会 特別研究員(DC1)

Education 3

  1. Osaka University Graduate School of Science

    1995/04 - 1998/03

  2. Osaka University Graduate School of Science

    1993/04 - 1995/03

  3. Osaka University School of Science

    1989/04 - 1993/03

Professional Memberships 1

  1. 日本分子生物学会

Research Areas 3

  1. Life sciences / Developmental biology /

  2. Life sciences / Structural biochemistry /

  3. Life sciences / Molecular biology /

Papers 37

  1. Factories without walls: The molecular architecture and functions of non-membrane organelles in small RNA-guided genome protection

    Shinichi Kawaguchi, Wakana Isshiki, Toshie Kai

    Biochimica et Biophysica Acta (BBA) - General Subjects Vol. 1869 No. 7 p. 130811-130811 2025/06 Research paper (scientific journal)

    Publisher: Elsevier BV
  2. In silico screening by AlphaFold2 program revealed the potential binding partners of nuage-localizing proteins and piRNA-related proteins

    Kawaguchi Shinichi, Xu Xin, Soga Takashi, Yamaguchi Kenta, Kawasaki Ryuuya, Shimouchi Ryota, Date Susumu, Kai Toshie

    eLife 2025/04/22

    Publisher: eLife Sciences Publications, Ltd
  3. HemK2 functions for sufficient protein synthesis and RNA stability through eRF1 methylation during Drosophila oogenesis

    Fengmei Xu, Ritsuko Suyama, Toshifumi Inada, Shinichi Kawaguchi, Toshie Kai

    Development Vol. 151 No. 14 2024/07/15 Research paper (scientific journal)

    Publisher: The Company of Biologists
  4. Tejas functions as a core component in nuage assembly and precursor processing in Drosophila piRNA biogenesis.

    Yuxuan Lin, Ritsuko Suyama, Shinichi Kawaguchi, Taichiro Iki, Toshie Kai

    The Journal of cell biology Vol. 222 No. 10 2023/10/02 Research paper (scientific journal)

    Publisher: Cold Spring Harbor Laboratory
  5. A pathway to produce non-coding piRNAs from endogenous protein-coding regions supports Drosophila spermatogenesis

    Taichiro Iki, Shinichi Kawaguchi, Toshie Kai

    Science advances Vol. 9 No. 29 2022/10/03 Research paper (scientific journal)

  6. The Tudor Domain-Containing Protein, Kotsubu (CG9925), Localizes to the Nuage and Functions in piRNA Biogenesis in D. melanogaster.

    Lin-Xenia Lim, Wakana Isshiki, Taichiro Iki, Shinichi Kawaguchi, Toshie Kai

    Frontiers in molecular biosciences Vol. 9 p. 818302-818302 2022 Research paper (scientific journal)

  7. Drosophila MARF1 ensures proper oocyte maturation by regulating nanos expression.

    Shinichi Kawaguchi, Mizuki Ueki, Toshie Kai

    PloS one Vol. 15 No. 4 2020

  8. Cell biology. Sensing ER stress.

    Shinichi Kawaguchi, Davis T W Ng

    Science (New York, N.Y.) Vol. 333 No. 6051 p. 1830-1 2011/09/30 Research paper (scientific journal)

  9. Interplay of substrate retention and export signals in endoplasmic reticulum quality control.

    Shinichi Kawaguchi, Chia-Ling Hsu, Davis T W Ng

    PloS one Vol. 5 No. 11 2010/11/24 Research paper (scientific journal)

  10. SnapShot: ER-associated protein degradation pathways.

    Shinichi Kawaguchi, Davis T W Ng

    Cell Vol. 129 No. 6 p. 1230-1230 2007/06/15 Research paper (scientific journal)

  11. Characterization of a Drosophila centrosome protein CP309 that shares homology with Kendrin and CG-NAP.

    Shin-ichi Kawaguchi, Yixian Zheng

    Molecular biology of the cell Vol. 15 No. 1 p. 37-45 2004/01 Research paper (scientific journal)

  12. The crystal structure of the ttCsaA protein: an export-related chaperone from Thermus thermophilus.

    S Kawaguchi, J Müller, D Linde, S Kuramitsu, T Shibata, Y Inoue, D G Vassylyev, S Yokoyama

    The EMBO journal Vol. 20 No. 3 p. 562-9 2001/02/01 Research paper (scientific journal)

  13. Thermodynamics and molecular simulation analysis of hydrophobic substrate recognition by aminotransferases.

    S i Kawaguchi, S Kuramitsu

    The Journal of biological chemistry Vol. 273 No. 29 p. 18353-64 1998/07/17 Research paper (scientific journal)

  14. Enzyme flexibility: a new concept in recognition of hydrophobic substrates.

    S Kawaguchi, Y Nobe, J Yasuoka, T Wakamiya, S Kusumoto, S Kuramitsu

    Journal of biochemistry Vol. 122 No. 1 p. 55-63 1997/07 Research paper (scientific journal)

  15. Separation of heat-stable proteins from Thermus thermophilus HB8 by two-dimensional electrophoresis.

    S Kawaguchi, S Kuramitsu

    Electrophoresis Vol. 16 No. 6 p. 1060-6 1995/06 Research paper (scientific journal)

  16. Homologous ligation: a novel cloning method.

    S Kawaguchi, S Kuramitsu

    Trends in genetics : TIG Vol. 10 No. 12 p. 420-420 1994/12 Research paper (scientific journal)

  17. [Mechanism of enzyme reaction].

    S Kawaguchi, S Kuramitsu

    Tanpakushitsu kakusan koso. Protein, nucleic acid, enzyme Vol. 39 No. 7 p. 1083-90 1994/05 Research paper (scientific journal)

  18. Pathogenesis and potential therapeutic targets of trichorhinophalangeal syndrome; lessons obtained from animal studies.

    Naoya Saeki, Rinna Kanai, Sayuri Tatsuta, Shinichi Kawaguchi, Masatsune Itoh, Shinsuke Ohba, Makoto Abe

    Developmental dynamics : an official publication of the American Association of Anatomists 2025/09/25 Research paper (scientific journal)

  19. Structural comparison between the open and closed forms of citrate synthase from Thermus thermophilus HB8.

    Eiji Kanamori, Shin-Ichi Kawaguchi, Seiki Kuramitsu, Tsutomu Kouyama, Midori Murakami

    Biophysics and physicobiology Vol. 12 p. 47-56 2015 Research paper (scientific journal)

  20. Biosynthetic mode can determine the mechanism of protein quality control.

    Rupali Prasad, Shinichi Kawaguchi, Davis T W Ng

    Biochemical and biophysical research communications Vol. 425 No. 3 p. 689-95 2012/08/31 Research paper (scientific journal)

  21. A nucleus-based quality control mechanism for cytosolic proteins.

    Rupali Prasad, Shinichi Kawaguchi, Davis T W Ng

    Molecular biology of the cell Vol. 21 No. 13 p. 2117-27 2010/07/01 Research paper (scientific journal)

  22. Regulation of microtubule assembly and organization in mitosis by the AAA+ ATPase Pontin.

    Daniel Ducat, Shin-Ichi Kawaguchi, Hongbin Liu, John R Yates 3rd, Yixian Zheng

    Molecular biology of the cell Vol. 19 No. 7 p. 3097-110 2008/07 Research paper (scientific journal)

  23. The EDEM and Yos9p families of lectin-like ERAD factors.

    Kazue Kanehara, Shinichi Kawaguchi, Davis T W Ng

    Seminars in cell & developmental biology Vol. 18 No. 6 p. 743-50 2007/12 Research paper (scientific journal)

  24. Crystal structure of the conserved protein TTHA0727 from Thermus thermophilus HB8 at 1.9 A resolution: A CMD family member distinct from carboxymuconolactone decarboxylase (CMD) and AhpD.

    Kaori Ito, Ryoichi Arai, Emiko Fusatomi, Tomomi Kamo-Uchikubo, Shin-Ichi Kawaguchi, Ryogo Akasaka, Takaho Terada, Seiki Kuramitsu, Mikako Shirouzu, Shigeyuki Yokoyama

    Protein science : a publication of the Protein Society Vol. 15 No. 5 p. 1187-92 2006/05 Research paper (scientific journal)

  25. Expression and purification of recombinant human histones.

    Yoshinori Tanaka, Maki Tawaramoto-Sasanuma, Shinichi Kawaguchi, Tsutomu Ohta, Kinya Yoda, Hitoshi Kurumizaka, Shigeyuki Yokoyama

    Methods (San Diego, Calif.) Vol. 33 No. 1 p. 3-11 2004/05 Research paper (scientific journal)

  26. Crystal structure of the CENP-B protein-DNA complex: the DNA-binding domains of CENP-B induce kinks in the CENP-B box DNA

    Y Tanaka, O Nureki, H Kurumizaka, S Fukai, S Kawaguchi, M Ikuta, J Iwahara, T Okazaki, S Yokoyama

    EMBO JOURNAL Vol. 20 No. 23 p. 6612-6618 2001/12 Research paper (scientific journal)

  27. Substrate recognition mechanism of thermophilic dual-substrate enzyme.

    H Ura, T Nakai, S I Kawaguchi, I Miyahara, K Hirotsu, S Kuramitsu

    Journal of biochemistry Vol. 130 No. 1 p. 89-98 2001/07 Research paper (scientific journal)

  28. Structure of the EMAPII domain of human aminoacyl-tRNA synthetase complex reveals evolutionary dimer mimicry.

    L Renault, P Kerjan, S Pasqualato, J Ménétrey, J C Robinson, S Kawaguchi, D G Vassylyev, S Yokoyama, M Mirande, J Cherfils

    The EMBO journal Vol. 20 No. 3 p. 570-8 2001/02/01 Research paper (scientific journal)

  29. Crystal structure of citrate synthase closed form from Thermus thermophilus HB8

    Murakami M., Kanamori E., Kawaguchi S., Kuramitsu S., Yokoyama S., Kouyama T.

    Seibutsu Butsuri Vol. 41 2001

    Publisher: The Biophysical Society of Japan General Incorporated Association
  30. Free energy requirement for domain movement of an enzyme.

    J Ishijima, T Nakai, S Kawaguchi, K Hirotsu, S Kuramitsu

    The Journal of biological chemistry Vol. 275 No. 25 p. 18939-45 2000/06/23 Research paper (scientific journal)

  31. The molecular structure of hyperthermostable aromatic aminotransferase with novel substrate specificity from Pyrococcus horikoshii.

    I Matsui, E Matsui, Y Sakai, H Kikuchi, Y Kawarabayasi, H Ura, S Kawaguchi, S Kuramitsu, K Harata

    The Journal of biological chemistry Vol. 275 No. 7 p. 4871-9 2000/02/18 Research paper (scientific journal)

  32. Structural genomics projects in Japan.

    S Yokoyama, Y Matsuo, H Hirota, T Kigawa, M Shirouzu, Y Kuroda, H Kurumizaka, S Kawaguchi, Y Ito, T Shibata, M Kainosho, Y Nishimura, Y Inoue, S Kuramitsu

    Progress in biophysics and molecular biology Vol. 73 No. 5 p. 363-76 2000 Research paper (scientific journal)

  33. Structure of Thermus thermophilus HB8 aspartate aminotransferase and its complex with maleate.

    T Nakai, K Okada, S Akutsu, I Miyahara, S Kawaguchi, R Kato, S Kuramitsu, K Hirotsu

    Biochemistry Vol. 38 No. 8 p. 2413-24 1999/02/23 Research paper (scientific journal)

  34. The novel substrate recognition mechanism utilized by aspartate aminotransferase of the extreme thermophile Thermus thermophilus HB8.

    Y Nobe, S Kawaguchi, H Ura, T Nakai, K Hirotsu, R Kato, S Kuramitsu

    The Journal of biological chemistry Vol. 273 No. 45 p. 29554-64 1998/11/06 Research paper (scientific journal)

  35. Crystallization and preliminary X-ray characterization of aspartate aminotransferase from an extreme thermophile, Thermus thermophilus HB8.

    T Nakai, K Okada, S Kawaguchi, R Kato, S Kuramitsu, K Hirotsu

    Acta crystallographica. Section D, Biological crystallography Vol. 54 No. Pt 5 p. 1032-4 1998/09/01 Research paper (scientific journal)

  36. Cloning and characterization of the uvrD gene from an extremely thermophilic bacterium, Thermus thermophilus HB8.

    Y Hiramatsu, R Kato, S Kawaguchi, S Kuramitsu

    Gene Vol. 199 No. 1-2 p. 77-82 1997/10/15 Research paper (scientific journal)

  37. Construction of aminotransferase chimeras and analysis of their substrate specificity.

    K Miyazawa, S Kawaguchi, A Okamoto, R Kato, T Ogawa, S Kuramitsu

    Journal of biochemistry Vol. 115 No. 3 p. 568-77 1994/03 Research paper (scientific journal)

Misc. 10

  1. AlphaFold2を利用して、新規なタンパク質間相互作用ペアを発見する〜機能解析の新展開

    河口真一

    HPSC (High Performance Scientific Computing) News Vol. 16 2024/03 Article, review, commentary, editorial, etc. (bulletin of university, research institution)

  2. Structural-biological whole cell project

    KURAMITSU Seiki, KAWAGUCHI Shinichi

    Bioscience & industry Vol. 54 No. 9 p. 34-36 1996/09/01

    Publisher: バイオインダストリ-協会
  3. ENZYMES THAT RECOGNIZE 2 DIFFERENT KINDS OF SUBSTRATE

    S KURAMITSU, S KAWAGUCHI, A OKAMOTO

    PROTEIN ENGINEERING Vol. 7 No. 9 p. 1152-1153 1994/09 Research paper, summary (international conference)

  4. A thermophilic dual-substrate enzyme has a flexible substrate-binding site

    NAKAI Tadashi, MIYAHARA Ikuko, HIROTSU Ken, URA Hideaki, KAWAGUCHI Shin-ichi, KURAMITSU Seiki

    Vol. 21 p. 325-325 1998/12/01

  5. Dynamism of enzyme : Induced-fit by the hydrophobicity of the substrate.

    ISHIJIMA Jun, NAKAI Tadashi, KAWAGUCHI Shin-ichi, HIROTSU Ken, KURAMITSU Seiki

    Vol. 21 p. 324-324 1998/12/01

  6. Conformational change in extremely thermophilic bacterium aspartate aminotransferase.

    Nakai T., Okada K., Miyahara I., Hirotsu K., Kawaguchi S., Kuramitsu S.

    Biophysics Vol. 38 No. 2 1998/09/07

    Publisher: The Biophysical Society of Japan General Incorporated Association
  7. 根粒菌由来の常温菌型および好熱菌型アミノ基転移酵素

    河口 真一, 倉光 成紀

    日本分子生物学会年会プログラム・講演要旨集 Vol. 19 p. 129-129 1996/08

  8. 高度好熱菌Thermus thermophilus由来アスパラギン酸アミノ基転移酵素の疎水性基質認識機構の解析

    延 優子, 河口 真一, 加藤 龍一, 倉光 成紀

    日本分子生物学会年会プログラム・講演要旨集 Vol. 19 p. 129-129 1996/08

  9. 高度好熱菌のDNAヘリカーゼのクローニング

    平松 佳晃, 加藤 龍一, 河口 真一, 倉光 成紀

    日本分子生物学会年会プログラム・講演要旨集 Vol. 19 p. 772-772 1996/08/01

  10. Crystal structure of aspartate aminotransferase from Thermus thermophilus

    Nihon Kessho Gakkaishi Vol. 38 No. Supplement p. 112-112 1996 Research paper, summary (national, other academic conference)

    Publisher: The Crystallographic Society of Japan

Institutional Repository 6

Content Published in the University of Osaka Institutional Repository (OUKA)
  1. In silicoスクリーニングを用いて、毒性ウィルスタンパク質と宿主タンパク質との相互作用を予測する

    河口 真一

    High Performance Computer Journal Vol. 15 p. 13-16 2025/08

  2. Factories without walls: The molecular architecture and functions of non-membrane organelles in small RNA-guided genome protection

    Kawaguchi Shinichi, Isshiki Wakana, Kai Toshie

    Biochimica et Biophysica Acta - General Subjects Vol. 1869 No. 7 2025/05/03

  3. In silico screening by AlphaFold2 program revealed the potential binding partners of nuage-localizing proteins and piRNA-related proteins

    Kawaguchi Shinichi, Xu Xin, Soga Takashi, Yamaguchi Kenta, Kawasaki Ryuuya, Shimouchi Ryota, Date Susumu, Kai Toshie

    eLife Vol. 13 2025/04/22

  4. HemK2 functions for sufficient protein synthesis and RNA stability through eRF1 methylation during Drosophila oogenesis

    Xu Fengmei, Suyama Ritsuko, Inada Toshifumi, Kawaguchi Shinichi, Kai Toshie

    Development Vol. 151 No. 14 2024/07/16

  5. AIを用いたタンパク質間複合体予測から、機能未知遺伝子の機能を推察する

    河口 真一

    High Performance Computer Journal Vol. 14 p. 19-22 2024/07

  6. miRNA/siRNA-directed pathway to produce noncoding piRNAs from endogenous protein-coding regions ensures Drosophila spermatogenesis

    Iki Taichiro, Kawaguchi Shinichi, Kai Toshie

    Science Advances Vol. 9 No. 29 2023/07/21