Biosynthetic pathway of pteridine compounds.
Biochemistry of pteridine coenzymes including folate
and
biopterin.
Biochemical mechanism of genetic suppression in
Drosophila.
Functional analysis of Drosophila genes involved in dpp
and Notch signaling

1976~1977 Postdoctoral Investigator: Oak Ridge
National Lab., Oak Ridge, TN, U.S.A. (Supervisor: Dr. K.
Bruce Jacobson)
1978~1978 Research Associate: Oak Ridge National
Lab., Oak Ridge, TN, U.S.A.
1978~1983 Assistant Professor: Seoul National
University, Seoul, Korea.
1981~1982 Assistant Professor: King Abdulaziz
University, Jeddah, S. Arabia.
1983~1988 Associate Professor: Seoul National
University, Seoul, Korea.
1988~1989 Visiting Scientist: Faculty of Chemistry, Univ.
of Konstanz, Germany (Alexander von Humboldt Fellow).
1988~Present Professor: Seoul National University,
Seoul, Korea
1990~1998Editor-in-Chief: “Pteridines”
1993~1999 Director: Institute for Molecular Biology and
Genetics, SNU.
1995~1997 Editor: “Molecules and Cells”
1997~Present Director: Creative Research Initiative
Center for Genetic Reprogramming, MOST.
1998~present Vice President: Asia-Pacific International
Molecular Biology Network (A-IMBN)
1999~1999 President: Microbiological Society of Korea.
2000~present Member: Korean Academy of Science
and Technology (KAST).
2002~present President: Korean Drosophilists’
Association.
2003~present President: The Korean Society for
Molecular and Cellular Biology.
2003~Present Director: Korea Bio-Max Center.

1994 Korea Science Award (Biological Science).