About the Authors

Xiaojun Song, Ping Jin, Sheng Qin, Fei Ma
Laboratory for Comparative Genomics and Bioinformatics & Jiangsu Key Laboratory for Biodiversity and Biotechnology, College of Life Science, Nanjing Normal University, Nanjing, People’s Republic of China

Liming Chen
The Key Laboratory of Developmental Genes and Human Disease, Ministry of Education, Institute of Life Science, Southeast University, Nanjing, Republic of China

Corresponding Author

mafei01@tsinghua.org.cn

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: FM XS. Performed the experiments: XS PJ. Analyzed the data: XS PJ. Contributed reagents/materials/analysis tools: SQ LC. Wrote the paper: XS FM. Carried out the calculations: XS. Performed statistical analyses: XS PJ. Collected data: SQ. Participated in the analysis: LC FM. Revised the manuscript: LC FM.