Involved in transcription. Probably functions as a transcriptional activator. Interacts with the TREX complex and RNA polymerase II. Mainly nuclear, but might shuttle between the nucleus and the cytoplasm. Deletion causes a slow growth phenotype on synthetic medium at 37 degrees Celsius and leads to decreased transcription. Deletion has no effect on ribosome biogenesis or frequency of recombination. Deletion is synthetically lethal with a deletion of each of the THO complex subunits HPR1, MFT1, THO2, and THP2. Belongs to the SWT1 family.