Enables heparin binding activity. Acts upstream of or within cell population proliferation; cell-substrate adhesion; and translation. Located in cytosolic ribosome and polysomal ribosome. Is extrinsic component of membrane. Is active in synapse. Is expressed in several structures, including gonad; heart; liver; lung; and metanephros. Orthologous to human RPL29 (ribosomal protein L29). [provided by Alliance of Genome Resources, Apr 2022]