DNA-binding protein RFXANK (RFXANK)

Activates transcription from class II MHC promoters. Activation requires the activity of the MHC class II transactivator/CIITA.

May regulate other genes in the cell. RFX binds the X1 box of MHC-II promoters (PubMed:9806546, PubMed:10072068, PubMed:10725724).