Enables ATP binding activity; manganese ion binding activity; and protein serine/threonine kinase activity. Involved in several processes, including positive regulation of brown fat cell differentiation; protein stabilization; and regulation of hematopoietic stem cell proliferation. Predicted to be located in cytosol; nucleolus; and plasma membrane. Predicted to be active in cytoplasm. Is expressed in several structures, including gonad; primitive streak; and spleen. Orthologous to human PIM1 (Pim-1 proto-oncogene, serine/threonine kinase). [provided by Alliance of Genome Resources, Apr 2022]