About the Authors

Andrea M. Siegel

Affiliation Emory Vaccine Center and Department of Microbiology & Immunology, Emory University School of Medicine, Atlanta, Georgia, United States of America

Jeremy H. Herskowitz

Affiliation Emory Vaccine Center and Department of Microbiology & Immunology, Emory University School of Medicine, Atlanta, Georgia, United States of America

Samuel H. Speck

sspeck@emory.edu

Affiliation Emory Vaccine Center and Department of Microbiology & Immunology, Emory University School of Medicine, Atlanta, Georgia, United States of America

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: AS SS. Performed the experiments: AS. Analyzed the data: AS SS. Contributed reagents/materials/analysis tools: JH. Wrote the paper: AS SS. Helped AS in the early stages of designing experiments, provided specific mutants, and provided help with some experiments: JH.