Innate immune receptor that senses cytoplasmic viral nucleic acids and activates a downstream signaling cascade leading to the production of type I interferons and pro-inflammatory cytokines . Forms a ribonucleoprotein complex with viral RNAs on which it homooligomerizes to form filaments . The homooligomerization allows the recruitment of RNF135 an E3 ubiquitin-protein ligase that activates and amplifies the RIG-I-mediated antiviral signaling in an RNA length-dependent manner through ubiquitination-dependent and -independent mechanisms . Upon activation, associates with mitochondria antiviral signaling protein (MAVS/IPS1) that activates the IKK-related kinases TBK1 and IKBKE which in turn phosphorylate the interferon regulatory factors IRF3 and IRF7, activating transcription of antiviral immunological genes including the IFN-alpha and IFN-beta interferons . Ligands include 5''-triphosphorylated ssRNAs and dsRNAs but also short dsRNAs (<1 kb in length) . In addition to the 5''-triphosphate moiety, blunt-end base pairing at the 5''-end of the RNA is very essential . Overhangs at the non-triphosphorylated end of the dsRNA RNA have no major impact on its activity . A 3''overhang at the 5''triphosphate end decreases and any 5''overhang at the 5'' triphosphate end abolishes its activity . Detects both positive and negative strand RNA viruses including members of the families Paramyxoviridae: Human respiratory syncytial virus and measles virus (MeV), Rhabdoviridae: vesicular stomatitis virus (VSV), Orthomyxoviridae: influenza A and B virus, Flaviviridae: Japanese encephalitis virus (JEV), hepatitis C virus (HCV), dengue virus (DENV) and west Nile virus (WNV) . It also detects rotaviruses and reoviruses . Detects and binds to SARS-CoV-2 RNAs which is inhibited by m6A RNA modifications (Ref.69). Also involved in antiviral signaling in response to viruses containing a dsDNA genome such as Epstein-Barr virus (EBV) . Detects dsRNA produced from non-self dsDNA by RNA polymerase III, such as Epstein-Barr virus-encoded RNAs (EBERs). May play important roles in granulocyte production and differentiation, bacterial phagocytosis and in the regulation of cell migration.

DDX58;RIG-I; RIGI; RLR-1

o95786

Human

WB,IHC

WB 1:4000
IHC 1:150

Monoclonal

106.4 kDa

Mouse

Full length human recombinant protein of human DDX58(NP_055129) produced in HEK293T cell.

Purified from mouse ascites fluids or tissue culture supernatant by affinity chromatography (protein A/G)

PBS (pH 7.3) containing 1% BSA, 50% glycerol and 0.02% sodium azide.

Store at +4°C short term. Store at -20°C long term. Avoid freeze / thaw cycle.