About the Authors

Yan Zhou

Affiliations College of Life Sciences, Beijing Normal University, Beijing, China, National Institute of Biological Sciences, Beijing, China

Na Dong

Affiliation National Institute of Biological Sciences, Beijing, China

Liyan Hu

Affiliation National Institute of Biological Sciences, Beijing, China

Feng Shao

shaofeng@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: YZ FS. Performed the experiments: YZ. Analyzed the data: YZ FS. Contributed reagents/materials/analysis tools: ND LH. Wrote the paper: YZ FS.