About the Authors

Ka-Wing Wong

Affiliation Department of Molecular Biology and Microbiology, Tufts University School of Medicine, Boston, Massachusetts, United States of America

Ralph R Isberg

To whom correspondence should be addressed. E-mail: ralph.isberg@tufts.edu

Affiliations Department of Molecular Biology and Microbiology, Tufts University School of Medicine, Boston, Massachusetts, United States of America , Howard Hughes Medical Institute, Tufts University School of Medicine, Boston, Massachusetts, United States of America

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

KWW and RRI conceived and designed the experiments. KWW performed the experiments. KWW and RRI analyzed the data. RRI contributed reagents/materials/analysis tools. KWW and RRI wrote the paper.