About the Authors

Francesco Ricci

Contributed equally to this work with: Francesco Ricci, Alexis Vallée-Bélisle

Affiliations Department of Chemistry and Biochemistry, University of California, Santa Barbara, California, United States of America, Dipartimento di Scienze e Tecnologie Chimiche, University of Rome, Tor Vergata, Rome, Italy, Consorzio Interuniversitario Biostrutture e Biosistemi “INBB”, Rome, Italy

Alexis Vallée-Bélisle

Contributed equally to this work with: Francesco Ricci, Alexis Vallée-Bélisle

Affiliation Department of Chemistry and Biochemistry, University of California, Santa Barbara, California, United States of America

Kevin W. Plaxco

kwp@chem.ucsb.edu

Affiliations Department of Chemistry and Biochemistry, University of California, Santa Barbara, California, United States of America, Interdepartmental Program in Biomolecular Science and Engineering, University of California, Santa Barbara, California, United States of America

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: FR AVB KWP. Performed the experiments: FR AVB. Analyzed the data: FR AVB KWP. Contributed reagents/materials/analysis tools: FR AVB KWP. Wrote the paper: FR AVB KWP.