About the Authors
Department of Biochemistry and Molecular Biology, University of Chicago, Chicago, Illinois, United States of America
Department of Chemistry, Brigham Young University, Provo, Utah, United States of America
Department of Medical Microbiology and Immunology, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin, United States of America
Committee on Immunology, University of Chicago, Chicago, Illinois, United States of America
The authors have declared that no competing interests exist.
The author(s) have made the following declarations about their contributions: Conceived and designed the experiments: JLS JG EJA. Performed the experiments: JLS JEK. Analyzed the data: JLS EJA. Contributed reagents/materials/analysis tools: PBS JG. Wrote the paper: JLS EJA.