1. Department of Biology, Indiana University, Bloomington, IN 47405, USA.
2. Department of Pathology and Laboratory Medicine, Children’s Hospital of Philadelphia, Philadelphia, PA 19102, USA.
3. Department of Cellular and Molecular Biology, University of Pennsylvania, Philadelphia, PA 19104, USA.
4. Protein and Proteomics Core, Children’s Hospital of Philadelphia, Philadelphia, PA 19102, USA.
5. Center for Genomics and Bioinformatics, Indiana University, Bloomington, IN 47405, USA.
6. Department of Molecular, Cellular, and Biomedical Sciences, University of New Hampshire, Durham, NH 03824, USA.