Appointments: 2011-present Professor, Dept. Biochem., Biophys. & Mol. Biol., Iowa State Univ. 2009,11,13 Visiting Fellow, Max Planck Institute for Chemical Ecology (Jena, Germany) 2007-2011 Associate Professor, Dept. Biochem., Biophys. & Mol. Biol., Iowa State Univ. 2006-present Director of Graduate Education, Dept. Biochem., Biophys. & Mol. Biol., ISU 2002-2007 Assistant Professor, Dept. Biochem., Biophys. & Mol. Biol., Iowa State Univ.