The predicted model of Bcp1/uL14/Rkm1 ternary complex. (A) XL-MS reveals crosslinks between Bcp1, uL14, and Rkm1. NLS: nuclear localization signal. ESS: eukaryotic-specific segments. CC: Coiled-coils. (B) The ternary complex of Bcp1 (green), Rkm1 (pink), and uL14 (blue) calculated based on XL-MS and cryo-EM map. The crosslinking residues between two molecules of the ternary complex are shown. (C) The cryo-EM map of the Bcp1/uL14/Rkm1 complex.