About the Authors

Della C. David

Affiliation Department of Biochemistry and Biophysics, University of California San Francisco, San Francisco, California, United States of America

Noah Ollikainen

Affiliation Graduate Program in Biological and Medical Informatics, University of California San Francisco, San Francisco, California, United States of America

Jonathan C. Trinidad

Affiliation Mass Spectrometry Facility, Department of Pharmaceutical Chemistry, University of California San Francisco, San Francisco, California, United States of America

Michael P. Cary

Affiliation Department of Biochemistry and Biophysics, University of California San Francisco, San Francisco, California, United States of America

Alma L. Burlingame

Affiliation Mass Spectrometry Facility, Department of Pharmaceutical Chemistry, University of California San Francisco, San Francisco, California, United States of America

Cynthia Kenyon

cynthia.kenyon@ucsf.edu

Affiliation Department of Biochemistry and Biophysics, University of California San Francisco, San Francisco, California, United States of America

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

The author(s) have made the following declarations about their contributions: Conceived and designed the experiments: DCD CK. Performed the experiments: DCD JCT. Analyzed the data: DCD NO MPC. Contributed reagents/materials/analysis tools: JCT ALB. Wrote the paper: DCD CK.