1. Department of Biochemistry and Molecular Biology, Pennsylvania State University, University Park, Pennsylvania 16802, USA;
2. Huck Center for Malaria Research, Pennsylvania State University, University Park, Pennsylvania 16802, USA
3. Microbiology and Immunology Department, Uniformed Services University of the Health Sciences, Bethesda, Maryland 20814, USA
4. Department of Chemistry, Pennsylvania State University, University Park, Pennsylvania 16802, USA