Predicted to enable DNA binding activity and RNA binding activity. Involved in negative regulation of isotype switching to IgA isotypes. Predicted to be located in cytoplasm and nuclear speck. Predicted to be part of THO complex part of transcription export complex. Predicted to colocalize with chromosome, telomeric region. Is expressed in early conceptus and embryo. Orthologous to human THOC1 (THO complex 1). [provided by Alliance of Genome Resources, Apr 2022]