About the Authors
Howard Hughes Medical Institute, Waksman Institute, and Department of Molecular Biology and Biochemistry, Rutgers, The State University of New Jersey, Piscataway, New Jersey, 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: CR GP VR HO KDI. Performed the experiments: CR GP VR HO. Analyzed the data: CR GP VR HO KDI. Wrote the paper: CR KDI.