Description: This SL-12 monoclonal antibody reacts with human Interferon Regulatory Factor (IRF)-3. IRF-3 is a 427 amino acid constitutively expressed member of the IRF transcription factor family that plays a critical role in the induction of type I interferons. Inactive IRF-3 continuously transits between the cytoplasm and nucleus. Virus or dsRNA induces the C-terminal phosphorylation of IRF-3 by IKKε and TBK-1. This phosphorylation results in retention of IRF-3 in the nucleus and subsequent transcription of IFN-ß, several interferon stimulated genes (ISGs), and other antiviral response genes.