[1] RIKEN, Antibiot Lab, Wako, Saitama 3510198, Japan
[2] Tokyo Denki Univ, Fac Sci & Engn, Hatoyama, Saitama 3500394, Japan
[3] Rikkyo Univ, Dept Life Sci, Toshima Ku, Tokyo 1718501, Japan
[4] Rikkyo Univ, Res Ctr Life Sci, Toshima Ku, Tokyo 1718501, Japan
[5] Rikkyo Univ, Dept Chem, Toshima Ku, Tokyo 1718501, Japan
[6] Rikkyo Univ, Res Ctr Smart Mol, Toshima Ku, Tokyo 1718501, Japan
[7] Chinese Acad Sci, Kunming Inst Bot, Kunming 650204, Peoples R China