Acts upstream of or within negative regulation of G1/S transition of mitotic cell cycle by negative regulation of transcription from RNA polymerase II promoter; negative regulation of T cell proliferation; and negative regulation of protein phosphorylation. Located in cytoplasm and nucleus. Is expressed in several structures, including gut; male reproductive gland or organ; nervous system; oviduct; and spleen. Orthologous to human SLFN12 (schlafen family member 12) and SLFN12L (schlafen family member 12 like). [provided by Alliance of Genome Resources, Apr 2022]