About the Authors

Hongyan Xu

Affiliation Department of Biological Sciences, National University of Singapore, Singapore, Singapore

Siew Hong Lam

Affiliation Department of Biological Sciences, National University of Singapore, Singapore, Singapore

Yuan Shen

Affiliation Department of Biological Sciences, National University of Singapore, Singapore, Singapore

Zhiyuan Gong

dbsgzy@nus.edu.sg

Affiliation Department of Biological Sciences, National University of Singapore, Singapore, Singapore

Competing Interests

The authors have read the journal's policy and have the following conflict: Zhiyuan Gong is an Academic Editor of PLoS ONE. This does not alter the authors’ adherence to all the PLOS ONE policies on sharing data and materials. All other authors declare that no competing interests exist.

Author Contributions

Conceived and designed the experiments: HX SHL ZG. Performed the experiments: HX YS. Analyzed the data: HX SHL ZG. Contributed reagents/materials/analysis tools: HX SHL ZG. Wrote the paper: HX ZG.