Institution: | 1 MRC Laboratory of Molecular Biology, Hills Road, Cambridge CB2 0QH, UK 2 Stanford Medical School, Department of Structural Biology, Fairchild Building, 299 Campus Drive, Stanford, CA 94305, USA 3 Laboratory of Biochemistry and Molecular Biology, The Rockefeller University, 1230 York Avenue, New York, NY 10021, USA 4 Department of Biochemistry and Molecular Biology, USC/Norris Comprehensive Cancer Center, 1501 San Pablo Street, ZNI 241, MC 2821, Los Angeles, CA 90089-2821, USA 5 Division of Epigenetics, Friedrich Miescher Institute for Biomedical Research, Maulbeerstrasse 66, 4058, Basel, Switzerland |