About the Authors

Prabhakar Sripadi

Current address: National Centre for Mass Spectrometry, Indian Institute of Chemical Technology, Hyderabad, India

Affiliation Department of Chemistry, W. M. Keck Institute of Proteomics Technology and Applications, The George Washington University, Washington, D. C., United States of America

Bindesh Shrestha

Affiliation Department of Chemistry, W. M. Keck Institute of Proteomics Technology and Applications, The George Washington University, Washington, D. C., United States of America

Rebecca L. Easley

Affiliation Department of Biochemistry and Molecular Biology, The George Washington University School of Medicine, Washington, D. C., United States of America

Lawrence Carpio

Affiliation Department of Biochemistry and Molecular Biology, The George Washington University School of Medicine, Washington, D. C., United States of America

Kylene Kehn-Hall

Affiliation Department of Molecular and Microbiology, National Center for Biodefense and Infectious Diseases, George Mason University, Manassas, Virginia, United States of America

Sebastien Chevalier

Affiliation Laboratory of Cellular Oncology, National Institutes of Health/National Cancer Institute, Bethesda, Maryland, United States of America

Renaud Mahieux

Affiliation Equipe Oncogenèse Rétrovirale, Ecole Normale Supérieure de Lyon, U758 INSERM, Lyon, France

Fatah Kashanchi

Affiliation Department of Molecular and Microbiology, National Center for Biodefense and Infectious Diseases, George Mason University, Manassas, Virginia, United States of America

Akos Vertes

vertes@gwu.edu

Affiliation Department of Chemistry, W. M. Keck Institute of Proteomics Technology and Applications, The George Washington University, Washington, D. C., United States of America

Competing Interests

Protea Biosciences Inc. has provided an unrestricted gift to the laboratory of AV. Some of the gift was used during this research. AV also serves as a Science Advisory Board member and a consultant to Protea Biosciences Inc. The George Washington University (GWU) has recently submitted a patent application related to the content of this article. AV confirms that these facts do not alter his adherence to all the PLoS ONE policies on sharing data and materials.

Author Contributions

Conceived and designed the experiments: FK AV. Performed the experiments: PS BS RE LC KKH SAC RM. Analyzed the data: PS KKH FK AV. Contributed reagents/materials/analysis tools: SAC RM. Wrote the paper: PS KKH AV.