1. Department of Microbiology, Chungbuk National University, Cheongju 28644, Korea
2. Center for Ecology and Environmental Toxicology, Chungbuk National University, Cheongju 28644, Korea
3. Department of Biopharmaceutical Sciences, Cheongju University, Cheongju 28160, Korea
4. Department of Bioengineering, University of Pennsylvania, Philadelphia, PA 19104, USA
5. Graduate School of Semiconductor and Chemical Engineering, Jeonbuk National University, Jeonju 54896, Korea