Predicted to enable GTPase activity and translation release factor activity. Predicted to be involved in cytoplasmic translational termination. Predicted to act upstream of or within nuclear-transcribed mRNA catabolic process, nonsense-mediated decay. Predicted to be located in cytoplasm. Predicted to be part of translation release factor complex. Is expressed in adrenal gland; genitourinary system; intestine; and spinal cord. Orthologous to human GSPT2 (G1 to S phase transition 2). [provided by Alliance of Genome Resources, Apr 2022]