Department of Biochemistry & Biophysics, 103 Biochemistry/Biophysics Building, Texas A&M University, 2128 TAMU, College Station, TX 77843-2128, USA. JerryTsai@TAMU.edu|Department of Biochemistry & Biophysics, 103 Biochemistry/Biophysics Building, Texas A&M University, 2128 TAMU, College Station, TX 77843-2128, USA. JerryTsai@TAMU.edu|Department of Biochemistry & Biophysics, 103 Biochemistry/Biophysics Building, Texas A&M University, 2128 TAMU, College Station, TX 77843-2128, USA. JerryTsai@TAMU.edu