Rabbit IRF-3 Polyclonal Antibody | anti-IRF-3 antibody

IRF-3 Antibody

Cat. Num. AAA9611175

• Gene Names: IRF3; IIAE7
• Reactivity: Human; Predicted: Bovine, Horse
• Applications: Western Blot, ELISA
• Purity: The antiserum was purified by peptide affinity chromatography using SulfoLink Coupling Resin (Thermo Fisher Scientific).
• Synonyms: IRF-3; Polyclonal Antibody; IRF-3 Antibody; IIAE7; Interferon regulatory factor 3; IRF 3; IRF3; IRF3_HUMAN; MGC94729; anti-IRF-3 antibody

• Host: Rabbit
• Reactivity: Human; Predicted: Bovine, Horse
• Clonality: Polyclonal
• Isotype: IgG
• Specificity: IRF-3 Antibody detects endogenous levels of IRF-3.
• Purity/Purification: The antiserum was purified by peptide affinity chromatography using SulfoLink Coupling Resin (Thermo Fisher Scientific).
• Form/Format: Liquid; Phosphate buffered saline, pH 7.4, 150mM NaCl, 0.02% sodium azide and 50% glycerol.
• Concentration: 1mg/ml (varies by lot)
• Sequence Length: 300

• Applicable Applications for anti-IRF-3 antibody: Western Blot (WB), Peptide ELISA (EIA)
• Application Notes: WB: 1:500-1:2000; ELISA (Peptide): 1:20000-1:40000
• Immunogen: A synthesized peptide derived from human IRF-3.
• Tissue Specificity: Expressed constitutively in a variety of tissues.
• Subcellular Location: Nucleus
• Preparation and Storage: Store at -20 degree C. Stable for 12 months from date of receipt.

Western Blot (WB)

(Western blot analysis of IRF-3 in lysates of HT29 , using IRF-3 Antibody.)

Related Product Information for anti-IRF-3 antibody

Description: Key transcriptional regulator of type I interferon (IFN)-dependent immune responses which plays a critical role in the innate immune response against DNA and RNA viruses. Regulates the transcription of type I IFN genes (IFN-alpha and IFN-beta) and IFN-stimulated genes (ISG) by binding to an interferon-stimulated response element (ISRE) in their promoters. Acts as a more potent activator of the IFN-beta (IFNB) gene than the IFN-alpha (IFNA) gene and plays a critical role in both the early and late phases of the IFNA/B gene induction. Found in an inactive form in the cytoplasm of uninfected cells and following viral infection, double-stranded RNA (dsRNA), or toll-like receptor (TLR) signaling, is phosphorylated by IKBKE and TBK1 kinases. This induces a conformational change, leading to its dimerization and nuclear localization and association with CREB binding protein (CREBBP) to form dsRNA-activated factor 1 (DRAF1), a complex which activates the transcription of the type I IFN and ISG genes. Can activate distinct gene expression programs in macrophages and can induce significant apoptosis in primary macrophages.

Post Translational Modifications: Constitutively phosphorylated on many Ser/Thr residues. C-terminal serine/threonine cluster is phosphorylated in response of induction by IKBKE and TBK1. Phosphorylated at Ser-396 by IKBKE upon ssRNA viral infection. Ser-385 and Ser-386 may be specifically phosphorylated in response to induction. Phosphorylation at Ser-386 by TBK1 results in oligomerization. An alternate model propose that the five serine/threonine residues between 396 and 405 are phosphorylated in response to a viral infection.(Microbial infection) Phosphorylation and subsequent activation of IRF3 is inhibited by vaccinia virus protein E3. Ubiquitinated; ubiquitination involves RBCK1 leading to proteasomal degradation. Polyubiquitinated; ubiquitination involves TRIM21 leading to proteasomal degradation. ISGylated by HERC5 resulting in sustained IRF3 activation and in the inhibition of IRF3 ubiquitination by disrupting PIN1 binding. The phosphorylation state of IRF3 does not alter ISGylation.

Subunit Structure: Monomer. Homodimer; phosphorylation-induced. Heterodimer with IRF7. Interacts with CREBBP. May interact with MAVS. Interacts with IKBKE and TBK1. Interacts with TICAM1 and TICAM2. Interacts with RBCK1. Interacts with HERC5. Interacts with DDX3X (phosphorylated at 'Ser-102'); the interaction allows the phosphorylation and activation of IRF3 by IKBKE. Interacts with TRIM21 and ULK1, in the presence of TRIM21; this interaction leads to IRF3 degradation by autophagy (PubMed:26347139). Interacts with RIOK3; RIOK3 probybly mediates the interaction of TBK1 with IRF3.

Similarity: Belongs to the IRF family.

NCBI and Uniprot Product Information

• NCBI GI #: 308199450
• NCBI GeneID: 3661
• NCBI Accession #: NP_001184053.1
• NCBI GenBank Nucleotide #: NP_001184053.1
• UniProt Accession #: Q14653
• Molecular Weight: Observed: 57 kDa; Predicted: 48 kDa
• NCBI Official Full Name: interferon regulatory factor 3 isoform 4
• NCBI Official Synonym Full Names: interferon regulatory factor 3
• NCBI Official Symbol: IRF3
• NCBI Official Synonym Symbols: IIAE7
• NCBI Protein Information: interferon regulatory factor 3
• UniProt Protein Name: Interferon regulatory factor 3
• UniProt Gene Name: IRF3
• UniProt Synonym Gene Names: IRF-3
• UniProt Entry Name: IRF3_HUMAN

NCBI Description

This gene encodes a member of the interferon regulatory transcription factor (IRF) family. The encoded protein is found in an inactive cytoplasmic form that upon serine/threonine phosphorylation forms a complex with CREBBP. This complex translocates to the nucleus and activates the transcription of interferons alpha and beta, as well as other interferon-induced genes. Alternatively spliced transcript variants encoding multiple isoforms have been observed for this gene. [provided by RefSeq, Nov 2011]

Uniprot Description

IRF3: interferon regulatory factor 3, a member of the interferon regulatory transcription factor (IRF) family. IRF3 is found in an inactive cytoplasmic form that upon serine/threonine phosphorylation forms a complex with CREBBP. This complex translocates to the nucleus and activates the transcription of interferons alpha and beta, as well as other interferon-induced genes.

Protein type: Transcription factor; DNA-binding

Chromosomal Location of Human Ortholog: 19q13.3-q13.4

Cellular Component: nucleoplasm; cytoplasm; cytosol; nucleus

Molecular Function: identical protein binding; protein binding; protein homodimerization activity; DNA binding; transcription cofactor activity; transcription factor activity

Biological Process: negative regulation of interferon-beta biosynthetic process; transcription from RNA polymerase II promoter; positive regulation of I-kappaB kinase/NF-kappaB cascade; viral reproduction; apoptosis; cytokine and chemokine mediated signaling pathway; MyD88-independent toll-like receptor signaling pathway; negative regulation of transcription from RNA polymerase II promoter; toll-like receptor 3 signaling pathway; negative regulation of defense response to virus by host; response to exogenous dsRNA; positive regulation of interferon type I production; lipopolysaccharide-mediated signaling pathway; positive regulation of interferon-beta production; toll-like receptor signaling pathway; innate immune response; interferon type I biosynthetic process; toll-like receptor 4 signaling pathway; response to DNA damage stimulus; negative regulation of interferon type I production; defense response to virus; positive regulation of interferon-alpha production; positive regulation of cytokine secretion

Disease: Herpes Simplex Encephalitis, Susceptibility To, 7