About the Authors

Yong-Feng Han

Affiliation National Institute of Biological Sciences, Beijing, China

Huan-Wei Huang

Affiliation National Institute of Biological Sciences, Beijing, China

Lin Li

Affiliation National Institute of Biological Sciences, Beijing, China

Tao Cai

Affiliation National Institute of Biological Sciences, Beijing, China

She Chen

Affiliation National Institute of Biological Sciences, Beijing, China

Xin-Jian He

hexinjian@nibs.ac.cn

Affiliation National Institute of Biological Sciences, Beijing, China

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: YFH XJH. Performed the experiments: YFH LL SC. Analyzed the data: YFH HWH TC XJH. Wrote the paper: YFH XJH.