Enables 5S rRNA binding activity and mRNA binding activity. Involved in cellular response to inorganic substance; positive regulation of aminoacyl-tRNA ligase activity; and positive regulation of phosphatase activity. Located in cytosolic ribosome. Part of aminoacyl-tRNA synthetase multienzyme complex and cytosolic large ribosomal subunit. Is active in postsynaptic density. Human ortholog(s) of this gene implicated in Diamond-Blackfan anemia 6; T-cell acute lymphoblastic leukemia; and glioblastoma. Orthologous to human RPL5 (ribosomal protein L5). [provided by Alliance of Genome Resources, Apr 2022]