Predicted to enable mRNA 3'-UTR binding activity and mRNA 5'-UTR binding activity. Predicted to be involved in regulation of apoptotic process and regulation of cellular senescence. Predicted to act upstream of or within regulation of protein localization. Located in nucleolus. Is expressed in several structures, including eye; genitourinary system; liver; lung; and spleen. Orthologous to human RSL1D1 (ribosomal L1 domain containing 1).