Predicted to enable protein serine/threonine kinase activity. Predicted to be involved in maturation of SSU-rRNA and positive regulation of rRNA processing. Predicted to be part of methyltransferase complex and preribosome, small subunit precursor. Predicted to be active in cytosol. Orthologous to human RIOK1 (RIO kinase 1). [provided by Alliance of Genome Resources, Apr 2022]