About the Authors
NIH Chemical Genomics Center, National Human Genome Research Institute, National Institutes of Health, Bethesda, Maryland, United States of America
Department of Biological Sciences, Illinois State University, Normal, Illinois, United States of America
The authors have declared that no competing interests exist.
Conceived and designed the experiments: DW AS AAS. Performed the experiments: AS AAS. Analyzed the data: JI CA DW AS AAS AJ MN CT YW. Contributed reagents/materials/analysis tools: AAS AJ MN YW. Wrote the paper: JI CA DW AS AJ CT.