About the Authors

Yasuhiko Kato

Affiliation Department of Biotechnology, Graduate School of Engineering, Osaka University, Osaka, Japan

Tomoaki Matsuura

Affiliation Department of Biotechnology, Graduate School of Engineering, Osaka University, Osaka, Japan

Hajime Watanabe

watanabe@bio.eng.osaka-u.ac.jp

Affiliation Department of Biotechnology, Graduate School of Engineering, Osaka University, Osaka, Japan

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: YK TM HW. Performed the experiments: YK. Analyzed the data: YK HW. Contributed reagents/materials/analysis tools: YK HW. Wrote the paper: YK TM HW.