Enables protein serine/threonine kinase activity. Predicted to be involved in several processes, including ERK1 and ERK2 cascade; microtubule cytoskeleton organization; and negative regulation of metaphase/anaphase transition of meiotic cell cycle. Predicted to act upstream of or within regulation of meiotic nuclear division. Located in cytosol. Orthologous to human MOS (MOS proto-oncogene, serine/threonine kinase). [provided by Alliance of Genome Resources, Apr 2022]