Affiliation: | a Department of Chemistry and Environmental Biotechnology, National Core Research Center, Gyeongsang National University, Chinju 660-701, Korea b Department of Chemistry and Research Institute of Basic Science, Changwon National University, Changwon 641-773, Korea c Department of Chemistry and Research Institute of Life Science, Gyeongsang National University, Chinju 660-701, Korea d Department of Biochemistry, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA |