Chair, Gordon Research Conference on Protein Derived Cofactors, Radicals, and Quinones – 2004
Consultant to Cargill Inc. – 2001
Editorial Board, Biochemical and Molecular Biology Education – 1999-Present
Finance Committee, American Society for Biochemistry and Molecular Biology – 1999-2000
Publications Committee, American Society for Biochemistry and Molecular Biology – 1997-2000
Consultant to Promega Biotech – 1997-1999
Selection Committee for Wellcome Visiting Professor in the Biomedical Sciences, The Protein Society – 1996-2000
Committee on Professional Training, American Chemical Society – 1993-1996
Visiting Professor, University of California, San Francisco – 1995
Consultant to Bristol-Myers Squibb Pharmaceutical Research Institute – 1993-1995
Associate Editor, Biochemistry – 1992-2011
Chair, Division of Biological Chemistry, American Chemical Society – 1990-1992
Consultant to Sterling Research Group, Board of Scientific Advisors – 1989-1993
Editorial Board, Bioorganic Chemistry – 1986-2011
Consultant to Amoco Research Center, Division of Biotechnology – 1986-1989
Educational Affairs Comm., American Society for Biochemistry and Molecular Biology – 1985-1988
Executive Committee, Division of Biological Chemistry, American Chemical Society – 1985-1988
Editorial Board, Journal of Biological Chemistry – 1983-1988
Co-Chair, Gordon Conference on Enzymes, Coenzymes and Metabolic Pathways – 1983
Organizer and Chair, Enzyme Mechanisms Conference, January – 1981
Visiting Professor of Chemistry, North Texas State University – 1979
Organizer and Chair, Symposium on Stereochemistry at Phosphorus, National ACS Meeting, Washington, D.C. – 1979
Consultant to NIH, Biochemistry Study Section – 1978-1983