Xie, J., Beickman, K., Otte, E., & Rymond, B. C. (1998). Progression through the spliceosome cycle requires Prp38p function for U4/U6 snRNA dissociation. The Embo Journal, 17(10), 2938-46. https://doi.org/10.1093/emboj/17.10.2938 (Original work published 1998)