Enables manganese ion binding activity and protein serine/threonine kinase activity. Predicted to be involved in phosphorylation. Predicted to be located in Golgi apparatus. Expressed in gonad; oocyte; rectum; and vulva. Human ortholog(s) of this gene implicated in X-linked dominant hypophosphatemic rickets and amelogenesis imperfecta type 1G. Is an ortholog of human FAM20A (FAM20A golgi associated secretory pathway pseudokinase).