TY - RPRT TI - Ubiquitin transfer by a RING E3 ligase occurs from a closed E2~Ub conformation AU - Branigan, E. AU - Penedo, J. C. AU - Hay, R. T. PY - 2019 DO - 10.1101/848788 UR - https://www.biorxiv.org/content/10.1101/848788v1 ID - 10.1101/848788 ER -