[1] Chonnam Natl Univ, Coll Nat Sci, Dept Chem, Kwangju 500757, South Korea
[2] Chonnam Natl Univ, Inst Basic Sci, Kwangju 500757, South Korea
[3] Ajou Univ, Dept Mol Sci & Technol, Suwon 443749, South Korea
[4] Sungkyunkwan Univ, Dept Genet Engn, Suwon 440746, South Korea
[5] Ajou Med Sch, Dept Microbiol, Suwon 443749, South Korea