1 Stephenson Cancer Center and Departments of Biochemistry & Physiology, Ophthalmology, Comparative Medicine, Cell Biology, Internal Medicine, Neurosurgery, and Oncology Science, University of Oklahoma Health Science Center, Oklahoma City, OK, USA.
2 Genes & Human Disease Research Program, Oklahoma Medical Research Foundation, Oklahoma City, OK, USA.
3 Departments of Structural Biology and Developmental Neurobiology, St. Jude Children's Research Hospital, Memphis, TN, USA.
4 Department of Cellular and Molecular Medicine, University of Arizona, Tucson, AZ, USA.
5 Stephenson Cancer Center and Departments of Biochemistry & Physiology, Ophthalmology, Comparative Medicine, Cell Biology, Internal Medicine, Neurosurgery, and Oncology Science, University of Oklahoma Health Science Center, Oklahoma City, OK, USA. xin-zhang-1@ouhsc.edu.