1. Department of Microbiology; Chungbuk National University; Cheongju 361-763 Korea
2. Department of Biology; Jeju National University; Jeju 690-756 Korea
3. Center for Gas Analysis; Korea Research Institute of Standards and Science; 267 Gajeong-ro, Yuseong-gu Daejeon 305-340 Korea
4. Korean Bioinformation Center; Korean Research Institute of Bioscience and Bioengineering; Daejeon 305-806 Korea
5. Division of Biotechnology; Chonbuk National University; Iksan 570-752 Korea
6. School of Biological Sciences; Chung-Ang University; Seoul 156-756 Korea