Affiliation: | a Department of Chemistry, Pohang University of Science and Technology, San 31, Hyojadong, Namgu, Pohang 790-784, South Korea b Korean Agency for Technology and Standards, P.O. Box 427-716, #2 Joongang-dong, Gwacheon, Gyunggi-do, Republic of, Korea c Center for Computational Biology and Bioinformatics, Korea Institute of Science and Technology Information, Yusong P.O. Box 122, South Korea d Life Science Division, Korea Institute of Science and Technology, Seoul 130-650, South Korea |