1. Biochemistry & Molecular Biology Program, Departments of Biology and Chemistry, The College of Wooster, Wooster, Ohio 44691, United States
2. Fachgebiet Mikrobiologie, Institut für Biologie, Universität Kassel, Kassel 34132, Germany
3. Department of Microbiology & Molecular Genetics, McGovern Medical School, University of Texas at Houston, Houston, Texas 77030, United States