40S ribosome biogenesis protein Tsr1 and BMS1 C-terminal
RIBIOP_C is a family of eukaryotic proteins from the C-terminus of pre-rRNA-processing protein or ribosome biogenesis proteins BMS1 and TSR1. These proteins act, in the nucleolus, as a molecular switch during maturation of the 40S ribosomal subunit. This domain, domain IV of translation elongation factor selb, adopts the same fold as translation proteins such as domain II of GTP-elongation factor Tu proteins.
Lu S et al.(2020). "CDD/SPARCLE: the conserved domain database in 2020.",