Predicted to enable protein serine/threonine kinase activator activity. Predicted to be involved in several processes, including positive regulation of protein serine/threonine kinase activity; regulation of DNA damage checkpoint; and replication fork processing. Predicted to act upstream of or within DNA repair. Predicted to be located in cytosol and nucleoplasm. Predicted to be active in nuclear replication fork. Orthologous to human ETAA1 (ETAA1 activator of ATR kinase). [provided by Alliance of Genome Resources, Apr 2022]