Affiliation: | 1. Department of Cell Biology, Harvard Medical School, Boston, MA 02115, USA;2. Jack and Eileen Connors Structural Biology Laboratory, Department of Biological Chemistry and Molecular Pharmacology, Harvard Medical School, Boston, MA 02115, USA;3. Howard Hughes Medical Institute, Chevy Chase, MD 20815-6789, USA;4. Immune Disease Institute and Program in Cellular and Molecular Medicine at Children''s Hospital, Boston, MA 02115, USA |