About the Authors

Michio Murakami

michio@iis.u-tokyo.ac.jp

Affiliations Institute of Industrial Science, The University of Tokyo, Meguro, Tokyo, Japan, Japan Science and Technology Agency, Core Research for Evolutionary Science and Technology (CREST), Chiyoda, Tokyo, Japan

Taikan Oki

Affiliations Institute of Industrial Science, The University of Tokyo, Meguro, Tokyo, Japan, Japan Science and Technology Agency, Core Research for Evolutionary Science and Technology (CREST), Chiyoda, Tokyo, Japan

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: MM TO. Performed the experiments: MM. Analyzed the data: MM. Contributed reagents/materials/analysis tools: MM. Wrote the paper: MM TO.