About the Authors

Elwood A. Mullins

Affiliations Department of Biochemistry, Purdue University, West Lafayette, Indiana, United States of America, Department of Chemistry, Washington University in St. Louis, St. Louis, Missouri, United States of America

Kelly L. Sullivan

Affiliation Department of Biochemistry, Purdue University, West Lafayette, Indiana, United States of America

T. Joseph Kappock

kappock@purdue.edu

Affiliation Department of Biochemistry, Purdue University, West Lafayette, Indiana, United States of America

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: EAM TJK. Performed the experiments: EAM KLS TJK. Analyzed the data: EAM TJK. Contributed reagents/materials/analysis tools: EAM KLS. Wrote the paper: TJK EAM KLS.