About the Authors

Mary E. Ziegler

Affiliation The Department of Pathology and Laboratory Medicine, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California, United States of America

Puneet Souda

Affiliation The Pasarow Mass Spectrometry Laboratory, The Semel Institute for Neuroscience and Human Behavior, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California, United States of America

Yi-Ping Jin

Affiliation The Department of Pathology and Laboratory Medicine, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California, United States of America

Julian P. Whitelegge

Affiliation The Pasarow Mass Spectrometry Laboratory, The Semel Institute for Neuroscience and Human Behavior, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California, United States of America

Elaine F. Reed

ereed@mednet.ucla.edu

Affiliation The Department of Pathology and Laboratory Medicine, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California, United States of America

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: MEZ JPW EFR. Performed the experiments: MEZ PS Y-PJ. Analyzed the data: MEZ PS. Contributed reagents/materials/analysis tools: MEZ PS Y-PJ JPW EFR. Wrote the paper: MEZ EFR.