Anti -MDA5 (Melanoma Differentiation-associated Protein 5, MDA-5, Interferon-induced
Helicase C Domain-containing Protein 1, Clinically Amyopathic Dermatomyositis Autoantigen
140kD, CADM-140 Autoantigen, Helicase with 2 CARD Domains, Helicard, Hlcd, IDDM19, Int
Pricing
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| Clone |
Host |
Grade |
Applications |
| Monoclonal |
Rabbit |
Purified |
B IP |
|
| Antiviral innate immunity depends on the combination of parallel pathways triggered by virus detecting proteins in the Toll-like receptor (TLR) family and RNA helicases, such as Rig-I (retinoic acid-inducible gene I) and MDA-5 (melanoma differentiation-associated antigen 5), which promote the transcription of type I interferons (IFN) and antiviral enzymes (1-3). TLRs and helicase proteins contain sites that recognize the molecular patterns of different virus types, including DNA, single-stranded (ssRNA), double-stranded (dsRNA), and glycoproteins. These | | | antiviral proteins are found in different cell compartments, with TLR proteins (i.e. TLR3, TLR7, TLR8 and TLR9) found on endosomal membranes and helicases localized to the cytoplasm. | | | Rig-I expression is induced by retinoic acid, LPS,IFN, and viral infection (4,5). Both Rig-I and MDA-5 share a DExD/H-box helicase domain that detects viral dsRNA and two amino-terminal caspase recruitment domains (CARD) that are required for triggering downstream signaling (4-7). Rig-I binds both dsRNA and viral ssRNA that contains a 5’-triphosphate end not seen in host RNA (8,9). Though structurally related, Rig-I and MDA-5 detect a distinct set of | | | viruses (10,11). The CARD domain of the helicases, which is sufficient to generate signaling and IFN production, is recruited to the CARD domain of the MAVS/VISA/Cardif/IPS-1 mitochondrial protein, which triggers activation of NF-kB, TBK-1/IKK-e, and IRF-3/IRF-7 (12-15). MDA-5 (16,17), also named Ifih1 (interferon induced with helicase C domain 1), RH116 (RNA helicase-DEAD box protein 116) (18), or Helicard (19) is found to be induced by interferon. During apoptosis, MDA-5 is cleaved by caspases, separating the helicase and CARD domains (19). MDA-5 is uniquely activated by picornavirus (20) and measles virus (21). | | | Catalog # | M2772-76C | | Applications | Suitable for use in Western Blot and Immunoprecipitation. Other applications not tested. | | Recommended Dilution | Western Blot: 1:1000 Incubate membrane with diluted antibody in 5% BSA, 1X TBS, 0.1% Tween-20 at 4°C with gentle shaking, overnight. | | Immunoprecipitation: 1:100 | | Optimal 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 at least 12 months. For maximum recovery of product, centrifuge the original vial after thawing and prior to removing the cap. | | CAS Number | n/a | | Clone Type | Monoclonal | | Isotype | IgG | | Clone No | 11C1048 | | Host | Rabbit | | Source | Human | | Concentration | Not determined | | Form | Supplied as a liquid in 10mM sodium HEPES, pH 7.5, 150mM sodium chloride, 100ug/ml BSA, less than 0.02% sodium azide, 50% glycerol. | | Purity | Purified | | Immunogen | Synthetic peptide corresponding to residues surrounding Arg470 of human MDA-5. | | Specificity | Endogenous levels of total MDA-5. Species Crossreactivity: mouse. | | | Important Note | This product as supplied is intended for research use only, not for use in human, therapeutic or diagnostic applications without the expressed written authorization of United States Biological. | | Alternate names | EC=3.6.4.13 |
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