1 Department of Biochemistry & Molecular Biology, University of Texas Medical Branch, Galveston, TX, USA.
2 Department of Biochemistry & Molecular Biology, University of Texas Medical Branch, Galveston, TX, USA; Department of Phamarcology & Toxicology, University of Texas Medical Branch, Galveston, TX, USA; Sealy Center for Structural Biology & Molecular Biophysics, University of Texas Medical Branch, Galveston, TX, USA; Sealy Center for Vaccine Development, University of Texas Medical Branch, Galveston, TX, USA; Institute for Translational Science, University of Texas Medical Branch, Galveston, TX, USA. Electronic address: [email protected].