Predicted to enable GTP binding activity and GTPase activity. Acts upstream of or within maturation of LSU-rRNA from tricistronic rRNA transcript (SSU-rRNA, 5.8S rRNA, LSU-rRNA). Predicted to be located in cytosol; nucleus; and perinuclear region of cytoplasm. Orthologous to human GTPBP4 (GTP binding protein 4). [provided by Alliance of Genome Resources, Apr 2022]