Scc2 is a potent activator of Cohesin’s ATPase that promotes loading by binding Scc1 without Pds5 by Petela, N, Gligoris, T, Metson, J, Lee, B, Voulgaris, M, Hu, B, Kikuchi, S, Chapard, C, Chen, W, Rajendra, E, Srinivisan, M, Yu, H, Löwe, J, Nasmyth, K