About the Authors

Stephanie D. Shaw

Affiliations Cold Spring Harbor Laboratory, Cold Spring Harbor, New York, United States of America, Molecular and Cellular Biology Program, State University of New York at Stony Brook, Stony Brook, New York, United States of America

Sutapa Chakrabarti

Affiliation Department of Chemistry and Biochemistry, University of California at San Diego, La Jolla, California, United States of America

Gourisankar Ghosh

Affiliation Department of Chemistry and Biochemistry, University of California at San Diego, La Jolla, California, United States of America

Adrian R. Krainer

To whom correspondence should be addressed. E-mail: krainer@cshl.edu

Affiliation Cold Spring Harbor Laboratory, Cold Spring Harbor, New York, United States of America

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: AK SS. Performed the experiments: SS. Analyzed the data: SS. Wrote the paper: AK SS. Other: Designed and generated N-terminal deletion construct: SC GG.