- 2019/04 - 現在 Waseda University Graduate School of Science and Engineering Department of Integrative Bioscience and Biomedical Engineering
- 2019/07 - The University of Tokyo Professor Emeritus
- 2015/04 - 2019/03 The University of Tokyo Department of Computational Biology and Medical Sciences Professor
- 2004/04 - 2015/03 The University of Tokyo Department of Medical Genome Sciences, Graduate School of Frontier Sciences, Professor
- 2011/04 - 2013/03 The University of Tokyo Graduate School of Frontier Sciences Dean
- 1999/04 - 2004/03 The University of Tokyo Department of Integrated Biosciences, Graduate School of Frontier Sciences, Professor
- 1998/04 - 1999/03 The University of Tokyo Department of Integrated Biosciences, Graduate School of Frontier Sciences Associate Professor
- 1996/08 - 1998/03 The University of Tokyo Department of Chemistry and Biotechnology, Graduate School of Engineering Associate Professor
- 1994/08 - 1996/07 The University of Tokyo Department of Chemistry and Biotechnology, Graduate School of Engineering Lecturer
- 1992/06 - 1994/07 The University of Tokyo Department of Engineering, The Faculty of Engineering Assistant Professor
- 1989/08 - 1992/05 Tokyo Institute of Technology School of Bioscience and Biotechnology Assistant Professor
- 1988/05 - 1989/07 Tokyo Institute of Technology Department of Bioscience, Assistant Professor
- 1986/09 - 1988/04 Yokohama City University Assistant Professor
- 1984/05 - 1986/08 Max-Planck-Institut für experimentelle Medizin Abteilung Chemie
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THE BIOPHYSICAL SOCIETY OF JAPAN
, The RNA Society of Japan
, 無細胞生命科学研究会
, 農芸化学会
, 生化学会
, 分子生物学会