1. Department of Chemical Engineering, Kwangwoon University, Seoul 139-701, Republic of Korea
2. Department of Chemical Engineering, Ajou University, Suwon 443-749, Republic of Korea
3. Institute of Biochemistry, ETH Zurich, Zurich, CH 8093, Switzerland
4. Department of Molecular Science
and Technology, Ajou University, Suwon
443-749, Republic of Korea
5. Institute for Medical Sciences, Ajou University School of Medicine, Suwon 443-749,
Republic of Korea
6. Department
of Polymer Engineering, The University of Suwon, Gyeonggi 445-743, Republic
of Korea