Regulatory Factor X Complex

**Semantic type:** Amino Acid, Peptide, or Protein

**Definition:** A heterotetrameric complex that plays a role in the transcriptional activation of major histocompatibility class II genes and consists of 2 molecules of DNA-binding protein RFX5 and one each of regulatory factor X-associated protein (RFXAP) and DNA-binding protein RFXANK.

**Synonyms:** - RFX - RFX Complex - Regulatory Factor X