1. Department of Biochemistry and Structural Biology, University of Texas Health San Antonio, San Antonio, Texas, USA
2. Institute for Molecular Virology, University of Minnesota – Twin Cities, Minneapolis, Minnesota, USA
3. Department of Biochemistry, Molecular Biology, and Biophysics, University of Minnesota – Twin Cities, Minneapolis, Minnesota, USA
4. Department of Microbiology and Immunology, University of Minnesota – Twin Cities, Minneapolis, Minnesota, USA
5. Department of Microbiology and Immunology, Stony Brook University, Stony Brook, New York, USA
6. Howard Hughes Medical Institute, University of Texas Health San Antonio, San Antonio, Texas, USA