Interferon regulatory factors contain a conservedN-terminal region of about 120 amino acids, which folds into a structure that binds specifically to the interferon consensus sequence (ICS), which is located upstream of the interferon genes. The remaining parts of the interferon regulatory factor sequence vary depending on the precise function of the protein.
^ abWeisz A, Marx P, Sharf R, Appella E, Driggers PH, Ozato K, Levi BZ (December 1992). "Human interferon consensus sequence binding protein is a negative regulator of enhancer elements common to interferon-inducible genes". J. Biol. Chem.267 (35): 25589–96. PMID1460054.