Interferon regulatory factors are proteins which regulate transcription of interferons (see regulation of gene expression).
They are used in the JAK-STAT signaling pathway.
Interferon regulatory factors contain a conserved N-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.
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This article incorporates text from the public domain Pfam and InterPro IPR001346