About the Authors

Siew Loon Ooi

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

James R Priess

Affiliations Division of Basic Sciences, 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

Steven Henikoff

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

Affiliations Division of Basic Sciences, 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

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