Structure-based design of highly selective inhibitors of the CREB binding protein bromodomain by Denny, R, Flick, A, Coe, J, Langille, J, Basak, A, Liu, S, Stock, I, Sahasrabudhe, P, Bonin, P, Hay, D, Brennan, P, Pletcher, M, Jones, L, Chekler, E