About the Authors

Ping Zhu

Affiliations Department of Biological Science and Institute of Molecular Biophysics, Florida State University, Tallahassee, Florida, United States of America, Center for Structural and Molecular Biology and National Laboratory of Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Chaoyang District, Beijing, China

Hanspeter Winkler

Affiliation Department of Biological Science and Institute of Molecular Biophysics, Florida State University, Tallahassee, Florida, United States of America

Elena Chertova

Affiliation AIDS Vaccine Program, SAIC Frederick, National Cancer Institute at Frederick, Frederick, Maryland, United States of America

Kenneth A. Taylor

Affiliation Department of Biological Science and Institute of Molecular Biophysics, Florida State University, Tallahassee, Florida, United States of America

Kenneth H. Roux

roux@bio.fsu.edu

Affiliation Department of Biological Science and Institute of Molecular Biophysics, Florida State University, Tallahassee, Florida, United States of America

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: KAT KHR. Performed the experiments: PZ. Analyzed the data: PZ HW KAT. Contributed reagents/materials/analysis tools: EC. Wrote the paper: KHR.