1. Department of Cell, Developmental and Integrative Biology, University of Alabama at Birmingham, Birmingham, AL 35294, USA.
2. Department of Genetics, University of Alabama at Birmingham, Birmingham, AL 35294, USA.
3. Department of Chemistry, Southern Research Institute, Birmingham, AL 35205, USA.
4. Department of Microbiology, University of Alabama at Birmingham, Birmingham, AL 35294, USA.
5. Laboratory for Proteolytic Neuroscience, RIKEN Center for Brain Science, Saitama 351-0198, Japan.
6. Department of Pathology, University of Washington, Seattle, WA 98104, USA.
7. Alzheimer’s Disease Center, Center for Neurodegeneration and Experimental Therapeutics, Department of Neurology, University of Alabama at Birmingham, Birmingham, AL 35294, USA.
8. Neuroscience Initiative, Sanford Burnham Prebys Medical Discovery Institute, La Jolla, CA 92037, USA.