Ribosomal 60S subunit protein L7B; required for processing of 27SA3 pre-rRNA to 27SB pre-rRNA during large ribosomal subunit assembly; autoregulates by inhibition of splicing; depletion leads to turnover of pre-rRNA; contains conserved C-terminal Nucleic acid Binding Domain (NDB2); binds Domain II of 25S and 5.8S rRNAs; homologous to mammalian ribosomal protein L7 and bacterial L30