Interferon regulatory factors (IRFs) comprise a family of transcription factors that function within the Jak/Stat pathway to regulate interferon (IFN) and IFN-inducible gene expression in response to viral infection (1).
IRFs play an important role in pathogen defense, autoimmunity, lymphocyte development, cell growth, and susceptibility to transformation.
The IRF family includes nine members: IRF-1, IRF-2, ISGF3γ/p48, IRF-3, IRF-4 (Pip/LSIRF/ICSAT), IRF-5, IRF-6, IRF-7, and IRF-8/ICSBP.
All IRF proteins share homology in their amino-terminal DNA-binding domains.
IRF family members regulate transcription through interactions with proteins that share similar DNA-binding motifs, such as IFN-stimulated response elements (ISRE), IFN consensus sequences (ICS), and IFN regulatory elements (IRF-E) (2).
IRF-3 can inhibit cell growth and plays a critical role in controlling the expression of genes in the innate immune response (1-4).
In unstimulated cells, IRF-3 is present in the cytoplasm.
Viral infection results in phosphorylation of IRF-3 and leads to its translocation to the nucleus where it activates promoters containing IRF-3-binding sites.
Phosphorylation of IRF-3 occurs at a cluster of C-terminal Ser and Thr residues (between 385 and 405), leading to its association with the p300/CBP coactivator protein that promotes DNA binding and transcriptional activity (5).
During infection, IRF-3 is likely activated through a pathway that includes activation of Toll-like receptors and a kinase complex that includes IKKε and TBK1 (6,7).
IRF-3 is phosphorylated at Ser396 following viral infection, expression of viral nucleocapsid, and double-stranded RNA treatment.
These events likely play a role in activation of IRF-3 (8).
Applications:Suitable for use in Western Blot, Immunohistochemistry, Immunofluorescence/Immunocytochemistry and ELISA.
Other applications not tested.
Recommended Dilution:Western Blot: 1:500-1:2000, incubate membrane with diluted primary antibody in TBS, 5% milk, 0.1% Tween 20 at 4°C with gentle shaking, overnight
Immunohistochemistry: 1:50-1:200 Immunofluorescence: 1:100-1:500ELISA (peptide): 1:20,000-1:40,000Optimal dilutions to be determined by the researcher.
Storage and Stability:May be stored at 4°C for short-term only.
Aliquot to avoid repeated freezing and thawing.
Store at -20°C.
Aliquots are stable for 12 months after receipt.
For maximum recovery of product, centrifuge the original vial after thawing and prior to removing the cap.
仕様
Size：200ul
Host：rabbit
Source Antibody：human
Grade：Affinity Purified
Purity：Purified by immunoaffinity chromatography from serum.
Form：Supplied as a liquid in PBS, pH 7.4, 0.02% sodium azide, 50% glycerol.
Specificity：Recognizes endogenous levels of total human IRF3. Species Crossreactivity: Mouse and rat
Isotype：IgG
Calc Applications Abbrev：E IC IF IHC WB
Calc Crossreactivity：Hu Mo Rt
Immunogen：Synthetic peptide corresponding to human IRF3.
