CST, 12869S, LGP2 (D3I3L) Rabbit Monoclonal Antibody

Monoclonal Antibody for studying LGP2. Validated for Western Blotting. Available in 2 sizes. Highly specific and rigorously validated in-house, LGP2 (D3I3L) Rabbit Monoclonal Antibody (CST #12869) is ready to ship. Product Usage Information Western Blotting: 1:1000 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 Available protocols: Western Blotting Specificity / Sensitivity LGP2 (D3I3L) Rabbit Monoclonal Antibody recognizes endogenous levels of total LGP2 protein. Species Reactivity: Human Source / Purification Monoclonal antibody is produced by immunizing animals with a synthetic peptide corresponding to residues surrounding Val478 of human LGP2 protein. Background 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 RNA (ssRNA), double-stranded RNA (dsRNA), and glycoproteins. These antiviral proteins are found in different cell compartments; TLRs (i.e. TLR3, TLR7, TLR8, and TLR9) are expressed on endosomal membranes and helicases are 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-κB, TBK1/IKKε, and IRF-3/IRF-7 (12-15). The DExD/H-box family helicase laboratory of genetics and physiology 2 (LGP2, DHX58) is a Rig-I-like receptor (RLR) that lacks the CARD domain and associated signaling ability (6,16). Research studies demonstrate that LGP2 helicase binds dsRNA and inhibits the Rig-I-like receptors Rig-I and MDA-5. Expression of LGP2 is induced by interferon, dsRNA, and viral infection (17). Studies using LGP2-deficient animals demonstrate a complicated interaction between LGP2 and the other RLRs that involves both positive and negative effects on interferon regulation (18-20). In addition, LGP2 may regulate apoptosis, contribute to CD8+ T cell survival, and protect cancer cells from ionizing radiation (21,22). Alternate Names ATP-dependent RNA helicase DHX58; D11LGP2; D11LGP2E; DEXH (Asp-Glu-X-His) box polypeptide 58; DExH-box helicase 58; DHX58; LGP2; ortholog of mouse D11lgp2; Probable ATP-dependent helicase LGP2; Probable ATP-dependent RNA helicase DHX58; Protein D11Lgp2 homolog; RIG-I-like receptor 3; RIG-I-like receptor LGP2; RLR; RLR-3; RNA helicase LGP2 Specification REACTIVITY: H SENSITIVITY: Endogenous MW (kDa): 77 Source/Isotype: Rabbit IgG