1 Department of Biochemistry and Molecular Biology, Sealy Center for Structural Biology and Molecular Biophysics, Sealy Institute for Vaccine Sciences, University of Texas Medical Branch, Galveston, Texas, 77555, USA.
2 Department of Biochemistry and Molecular Biology, Sealy Center for Structural Biology and Molecular Biophysics, Sealy Institute for Vaccine Sciences, University of Texas Medical Branch, Galveston, Texas, 77555, USA. peshi@utmb.edu.