R Recombinant
Recombinant: Superior lot-to-lot consistency, continuous supply, and animal-free manufacturing.
IRF-2 (E4F5B) Rabbit mAb #76647
Filter:
- WB
- IP
- ChIP
Supporting Data
| REACTIVITY | H R |
| SENSITIVITY | Endogenous |
| MW (kDa) | 55 |
| Source/Isotype | Rabbit IgG |
Application Key:
- WB-Western Blotting
- IP-Immunoprecipitation
- ChIP-Chromatin Immunoprecipitation
Species Cross-Reactivity Key:
- H-Human
- R-Rat
Product Information
Product Usage Information
For optimal ChIP results, use 5 μL of antibody and 10 μg of chromatin (approximately 4 × 106 cells) per IP. This antibody has been validated using SimpleChIP® Enzymatic Chromatin IP Kits.
| Application | Dilution |
|---|---|
| Western Blotting | 1:1000 |
| Immunoprecipitation | 1:100 |
| Chromatin IP | 1:100 |
Storage
Supplied in 10 mM sodium HEPES (pH 7.5), 150 mM NaCl, 100 µg/mL BSA, 50% glycerol, and less than 0.02% sodium azide. Store at –20°C. Do not aliquot the antibody.
Protocol
Specificity / Sensitivity
IRF-2 (E4F5B) Rabbit mAb recognizes endogenous levels of total IRF-2 protein.
Species Reactivity:
Human, Rat
Source / Purification
Monoclonal antibody is produced by immunizing animals with a synthetic peptide corresponding to residues surrounding Trp252 of human IRF-2 protein.
Background
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, IRF-9/ISGF3γ, 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).
Structurally similar to other IRF family members, IRF-2 acts as both a transcription activator and repressor. IRF-2 promotes transcription of several genes, including histone H4, the VCAM1 cell adhesion protein, and CIITA, a MHC transactivator protein. Conversely, IRF-2 competitively binds to promoter sites utilized by IRF-1, repressing activation by this related transcription factor (3). Its activity may be controlled by inducible proteolysis (4). IRF-2 has also been associated with increased oncogenic potential (5,6) and lymphocyte development (7,8).
Structurally similar to other IRF family members, IRF-2 acts as both a transcription activator and repressor. IRF-2 promotes transcription of several genes, including histone H4, the VCAM1 cell adhesion protein, and CIITA, a MHC transactivator protein. Conversely, IRF-2 competitively binds to promoter sites utilized by IRF-1, repressing activation by this related transcription factor (3). Its activity may be controlled by inducible proteolysis (4). IRF-2 has also been associated with increased oncogenic potential (5,6) and lymphocyte development (7,8).
- Taniguchi, T. et al. (2001) Annu Rev Immunol 19, 623-55.
- Honda, K. and Taniguchi, T. (2006) Nat Rev Immunol 6, 644-58.
- Harada, H. et al. (1989) Cell 58, 729-39.
- Palombella, V.J. and Maniatis, T. (1992) Mol Cell Biol 12, 3325-36.
- Harada, H. et al. (1993) Science 259, 971-4.
- Nguyen, H. et al. (1995) Oncogene 11, 537-44.
- Matsuyama, T. et al. (1993) Cell 75, 83-97.
- Lohoff, M. et al. (2000) J Exp Med 192, 325-36.
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For Research Use Only. Not For Use In Diagnostic Procedures.
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KARPAS cell line source: Dr. Abraham Karpas at the University of Cambridge.
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