Affiliation: | From the ‡Department of Biochemistry and Molecular Biophysics, Columbia University Medical Center, New York, New York 10032.;§Department of Biological Sciences, Columbia University, New York, New York 10027.;¶Centro de Investigación Cooperativa (CIC) nanoGUNE, 20018 Donostia-San Sebastian, Spain, and ;‖IKERBASQUE, Basque Foundation for Science, 48013 Bilbao, Spain |