About the Authors

Baosheng Ge

Affiliation Center for Bioengineering and Biotechnology, China University of Petroleum, Qingdao, People's Republic of China

Feng Yang

Affiliation Center for Bioengineering and Biotechnology, China University of Petroleum, Qingdao, People's Republic of China

Daoyong Yu

daoyong@upc.edu.cn (DY); xuh@upc.edu.cn (HX)

Affiliation Center for Bioengineering and Biotechnology, China University of Petroleum, Qingdao, People's Republic of China

Shuang Liu

Affiliation Center for Bioengineering and Biotechnology, China University of Petroleum, Qingdao, People's Republic of China

Hai Xu

daoyong@upc.edu.cn (DY); xuh@upc.edu.cn (HX)

Affiliation Center for Bioengineering and Biotechnology, China University of Petroleum, Qingdao, People's Republic of China

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: BG FY DY HX. Performed the experiments: BG FY SL. Analyzed the data: BG FY DY HX. Contributed reagents/materials/analysis tools: SL HX. Wrote the paper: BG DY.