About the Authors
National Institute of Biological Sciences, Beijing, China
Graduate School of Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, China
Shandong Provincial Key Laboratory of Energy Genetics, Qingdao Institute of BioEnergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao, Shangdong, China
The authors have declared that no competing interests exist.
The author(s) have made the following declarations about their contributions: Conceived and designed the experiments: JZL JL KY. Performed the experiments: JZL JL YF MS KY. Analyzed the data: JZL JL YF KY. Wrote the paper: KY.