About the Authors

Gregory O. Staples

Contributed equally to this work with: Gregory O. Staples, Xiaofeng Shi

Affiliation Department of Biochemistry, Center for Biomedical Mass Spectrometry, Boston University School of Medicine, Boston, Massachusetts, United States of America

Xiaofeng Shi

Contributed equally to this work with: Gregory O. Staples, Xiaofeng Shi

Affiliation Department of Biochemistry, Center for Biomedical Mass Spectrometry, Boston University School of Medicine, Boston, Massachusetts, United States of America

Joseph Zaia

jzaia@bu.edu

Affiliation Department of Biochemistry, Center for Biomedical Mass Spectrometry, Boston University School of Medicine, Boston, Massachusetts, United States of America

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: JZ GOS XS. Performed the experiments: GOS XS. Analyzed the data: JZ GOS XS. Contributed reagents/materials/analysis tools: XS. Wrote the paper: GOS.