About the Authors

Shouqiang Cheng

Affiliation Department of Microbiology-Immunology, Feinberg School of Medicine, Northwestern University, Chicago, Illinois, United States of America

Chenguang Fan

Affiliation Department of Molecular Biophysics & Biochemistry, Yale University, New Haven, Connecticut, United States of America

Sharmistha Sinha

Affiliation Department of Biochemistry, Biophysics and Molecular Biology, Iowa State University, Ames, Iowa, United States of America

Thomas A. Bobik

bobik@iastate.edu

Affiliation Department of Biochemistry, Biophysics and Molecular Biology, Iowa State University, Ames, Iowa, United States of America

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: SC CF SS TAB. Performed the experiments: SC CF SS TAB. Analyzed the data: SC CF SS TAB. Contributed reagents/materials/analysis tools: SC CF SS TAB. Wrote the paper: SC TAB.