1. U.S.
Department of Agriculture, Agricultural Research Service, Beltsville Area, IIBBL, Maryland 20705, United States
2. The
Institute of Cellular and Organismic Biology, Academia Sinica, Taipei, Taiwan 115
3. U.S.
Department of Agriculture, Agricultural Research Service, NCAUR, Peoria, Illinois 61604, United States
4. Department
of Chemistry, Johns Hopkins University, Baltimore, Maryland 21218, United States
5. U.S.
Department of Agriculture, Agricultural Research Service, AFRL, Kearneysville, West Virginia 25430, United States