MOE Key Laboratory of Protein Science, School of Life Sciences, Tsinghua University, Beijing 100084, China (X.S., W.P., D.X.); Institute of Molecular and Cell Biology, Singapore 138673 (J.W., L.C.); and College of Life Sciences, Zhejiang University, Hangzhou 310029, China (D.J.) (At 2010-12-20)
