1. BioRefinery Center, Korea Research Institute of Chemical Technology, Daejeon 305-600, Korea.
2. Mass Spectrometry Research Center/Mass Spectrometry Team, Korea Basic Science Institute, Daejeon 305-333, Korea.
3. Department of Microbiology and Molecular Biology, College of Bioscience and Biotechnology, Chungnam National University, Daejeon 305-764, Korea.
4. Department of Microbiology and Biotechnology, Daejeon University, Daejeon 300-716, Korea.