About the Authors

Harmit S Malik

To whom correspondence should be addressed. E-mail: hsmalik@fhcrc.org

Affiliations Basic Sciences Division, Fred Hutchinson Cancer Research Center, Seattle, Washington, United States of America , Basic Sciences Division, Fred Hutchinson Cancer Research Center, Seattle, Washington, United States of America

Steven Henikoff

Affiliations Basic Sciences Division, Fred Hutchinson Cancer Research Center, Seattle, Washington, United States of America , Howard Hughes Medical Institute, Fred Hutchinson Cancer Research Center, Seattle, Washington, United States of America

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

HSM conceived and designed the experiments, performed the experiments, and analyzed the data. HSM and SH wrote the paper.