About the Authors

Zhongge Zhang

Affiliation Division of Biological Sciences, University of California San Diego, La Jolla, California, United States of America

Milton H. Saier Jr

msaier@ucsd.edu

Affiliation Division of Biological Sciences, University of California San Diego, La Jolla, California, United States of America

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

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