- 1996 - 1998 ケースウエスタンリザーブ大学医学部 教授
- 1996 - 1998 Department of Physiology and Biophsics, Case Western Reserve University School of Medicine Professor
- 1989 - 1996 ケースウエスタンリザーブ大学医学部 準教授
- 1989 - 1996 Department of Physiology and Biophysics, Case Western Reserve University School of Medicine Associate Professor
- 1986 - 1989 ペンシルバニア大学医学部 準教授
- 1986 - 1989 Associate Professor, Department of Biochemistry and Biophysics, University of Pennsylvania School of Medicine Associate Professor
- 1981 - 1986 ペンシルバニア大学医学部 助教授
- 1981 - 1986 Department of Biochemistry and Biophysics, Univeristy of Pennsylvania School of Medicine Assistant Professor
- 1978 - 1981 ペンシルバニア大学医学部 研究員
- 1978 - 1981 Department of Biochemistry and Biophysics, University of Pennsylvania School of Medicine Research Associate
- Tohoku University Institute of Multidisciplinary Research for Advanced Materials, Division of Organic- and Bio-materials Research, Structural Biology and Bioinorganic Chemistry Professor
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アメリカ生化学分子生物学会
, 米国科学協会
, 米国生物物理学会
, 米国生化学及び分子生物学会
, American Association for the Advancement of Science
, Biophysical Society
, American Society for Biochemistry and Molecular Biology