RNA-binding component of the large ribosomal subunit. The ribosome is a large ribonucleoprotein complex responsible for the synthesis of proteins in the cell. Component of the large ribosomal subunit (By similarity). Interacts with IMPACT (By similarity). This protein is the smallest and one of the most basic of the proteins in liver ribosomes. Belongs to the eukaryotic ribosomal protein eL39 family.