1 Department of Molecular and Cellular Biochemistry and Center for Structural Biology, University of Kentucky, Lexington, KY, 40536, USA.
2 Division of Biology, Kansas State University, Manhattan, KS, 66506, USA.
3 Department of Molecular and Cellular Biochemistry and Center for Structural Biology, University of Kentucky, Lexington, KY, 40536, USA. matthew.gentry@uky.edu.