About the Authors

James D. Zook

Affiliation Department of Chemistry and Biochemistry, Arizona State University, Tempe, Arizona, United States of America

Trivikram R. Molugu

Affiliation Department of Chemistry and Biochemistry, University of Arizona, Tucson, Arizona, United States of America

Neil E. Jacobsen

Affiliation Department of Chemistry and Biochemistry, University of Arizona, Tucson, Arizona, United States of America

Guangxin Lin

Affiliations Department of Chemistry and Biochemistry, University of Arizona, Tucson, Arizona, United States of America, Saudi Basic Industries Corporation, Mount Vernon, Indiana, United States of America

Jürgen Soll

Affiliation Department of Biology, Ludwig-Maximilians-University, München, Germany

Brian R. Cherry

Affiliation Department of Chemistry and Biochemistry, Arizona State University, Tempe, Arizona, United States of America

Michael F. Brown

Affiliations Department of Chemistry and Biochemistry, University of Arizona, Tucson, Arizona, United States of America, Department of Physics, University of Arizona, Tucson, Arizona, United States of America

Petra Fromme

pfromme@asu.edu

Affiliation Department of Chemistry and Biochemistry, Arizona State University, Tempe, Arizona, United States of America

Competing Interests

Although one of the authors is currently employed by the commercial company “SABIC,” all contributions to this work including data collection and evaluation was performed while under the employment of the University of Arizona, Tucson. The authors include this information for purposes of transparency. This does not alter the authors’ adherence to all the PLOS ONE policies on sharing data and materials.

Author Contributions

Conceived and designed the experiments: JDZ TRM NEJ GL JS BRC MFB PF. Performed the experiments: JDZ TRM NEJ GL JS BRC MFB PF. Analyzed the data: JDZ TRM NEJ GL JS BRC MFB PF. Contributed reagents/materials/analysis tools: JDZ TRM NEJ GL JS BRC MFB PF. Wrote the paper: JDZ TRM NEJ GL JS BRC MFB PF.