[1] Chinese Acad Sci, Shanghai Inst Organ Chem, State Key Lab Bioorgan & Nat Prod Chem, Shanghai 200032, Peoples R China
[2] Harvard Univ, Sch Med, Dept Cell Biol, Boston, MA 02115 USA
[3] Univ N Carolina, Dept Biochem & Biophys, Chapel Hill, NC 27599 USA
[4] Brigham & Womens Hosp, Boston, MA 02115 USA