Goat Polyclonal RIG-I/DDX58 antibody. Suitable for IHC-P, ICC/IF, Flow Cyt (Intra) and reacts with Human samples. Cited in 1 publication. Immunogen corresponding to Synthetic Peptide within Human RIGI aa 900 to C-terminus.
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- Molecular cancer 21:972022The m6A demethylase ALKBH5 promotes tumor progression by inhibiting RIG-I expression and interferon alpha production through the IKKε/TBK1/IRF3 pathway in head and neck squamous cell carcinoma.Applications:Unspecified applicationReactive species:Unspecified reactive speciesShufang Jin,Mingyu Li,Hanyue Chang,Ruijie Wang,Zhiyuan Zhang,Jianjun Zhang,Yue He,Hailong MaPubMed 35395767
Key facts
- Isotype
- IgG
- Host species
- Goat
- Storage buffer
pH: 7.3
Preservative: 0.02% Sodium azide
Constituents: Tris buffered saline, 0.5% BSA- Form
- Liquid
- Clonality
- Polyclonal
Immunogen
- Synthetic Peptide within Human RIGI aa 900 to C-terminus. The exact immunogen used to generate this antibody is proprietary information. Database link O95786
Reactivity data
Select an application| IHC-P | ICC/IF | Flow Cyt (Intra) | |
|---|---|---|---|
| Human | Tested | Tested | Tested |
IHC-P
TestedTested
| Species | Dilution info | Notes |
|---|---|---|
Species Human | Dilution info 3.75 µg/mL | Notes Perform heat-mediated antigen retrieval with citrate buffer pH 6 before commencing with IHC staining protocol. |
ICC/IF
TestedTested
| Species | Dilution info | Notes |
|---|---|---|
Species Human | Dilution info 10 µg/mL | Notes - |
Flow Cyt (Intra)
TestedTested
| Species | Dilution info | Notes |
|---|---|---|
Species Human | Dilution info - | Notes - |
Associated Products
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Target data
Function
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 (PubMed:15208624, PubMed:15708988, PubMed:16125763, PubMed:16127453, PubMed:16153868, PubMed:17190814, PubMed:18636086, PubMed:19122199, PubMed:19211564, PubMed:24366338, PubMed:28469175, PubMed:29117565, PubMed:31006531, PubMed:34935440, PubMed:35263596, PubMed:36793726). Forms a ribonucleoprotein complex with viral RNAs on which it homooligomerizes to form filaments (PubMed:15208624, PubMed:15708988). 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 (PubMed:28469175, PubMed:31006531). 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 (PubMed:28469175, PubMed:31006531). Ligands include 5'-triphosphorylated ssRNAs and dsRNAs but also short dsRNAs (<1 kb in length) (PubMed:15208624, PubMed:15708988, PubMed:19576794, PubMed:19609254, PubMed:21742966). In addition to the 5'-triphosphate moiety, blunt-end base pairing at the 5'-end of the RNA is very essential (PubMed:15208624, PubMed:15708988, PubMed:19576794, PubMed:19609254, PubMed:21742966). Overhangs at the non-triphosphorylated end of the dsRNA RNA have no major impact on its activity (PubMed:15208624, PubMed:15708988, PubMed:19576794, PubMed:19609254, PubMed:21742966). A 3'overhang at the 5'triphosphate end decreases and any 5'overhang at the 5' triphosphate end abolishes its activity (PubMed:15208624, PubMed:15708988, PubMed:19576794, PubMed:19609254, PubMed:21742966). 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) (PubMed:21616437, PubMed:21884169). It also detects rotaviruses and reoviruses (PubMed:21616437, PubMed:21884169). Detects and binds to SARS-CoV-2 RNAs which is inhibited by m6A RNA modifications (Ref.71). Also involved in antiviral signaling in response to viruses containing a dsDNA genome such as Epstein-Barr virus (EBV) (PubMed:19631370). 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.
Alternative names
DDX58, RIGI, Antiviral innate immune response receptor RIG-I, ATP-dependent RNA helicase DDX58, DEAD box protein 58, RIG-I-like receptor 1, RNA sensor RIG-I, Retinoic acid-inducible gene 1 protein, Retinoic acid-inducible gene I protein, RLR-1, RIG-1, RIG-I
Recommended products
Goat Polyclonal RIG-I/DDX58 antibody. Suitable for IHC-P, ICC/IF, Flow Cyt (Intra) and reacts with Human samples. Cited in 1 publication. Immunogen corresponding to Synthetic Peptide within Human RIGI aa 900 to C-terminus.
Key facts
- Isotype
- IgG
- Host species
- Goat
- Storage buffer
pH: 7.3
Preservative: 0.02% Sodium azide
Constituents: Tris buffered saline, 0.5% BSA- Form
- Liquid
- Clonality
- Polyclonal
- Immunogen
- Synthetic Peptide within Human RIGI aa 900 to C-terminus. The exact immunogen used to generate this antibody is proprietary information. Database link O95786
- Purification technique
- Affinity purification Immunogen
- Concentration
- Purification notes
Purified from goat serum by ammonium sulphate precipitation followed by antigen affinity chromatography using the immunizing peptide.
Storage
- Shipped at conditions
- Blue Ice
- Appropriate short-term storage duration
- 1-2 weeks
- Appropriate short-term storage conditions
- +4°C
- Appropriate long-term storage conditions
- -20°C
- Aliquoting information
- Upon delivery aliquot
- Storage information
- Avoid freeze / thaw cycle
Notes
Abcam is leading the way to address reproducibility in scientific research with our highly validated recombinant monoclonal and recombinant multiclonal antibodies. Search & select one of Abcam's thousands of recombinant alternatives to eliminate batch-variability and unnecessary animal use.
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Abcam antibodies are extensively validated in a wide range of species and applications, so please check the reagent specifications meet your scientific needs before purchasing. If you have any questions or bespoke requirements, simply visit the Contact Us page to send us an inquiry or contact our Support Team ahead of purchase.
Supplementary info
- This supplementary information is collated from multiple sources and compiled automatically.
- Activity summary
RIG-I also known as DDX58 is an important protein with mass of approximately 102 kDa. This protein acts as a cytosolic sensor for viral double-stranded RNA playing an essential role in the detection of viral infections. It is expressed in many cell types including immune and epithelial cells. RIG-I consists of two N-terminal caspase activation and recruitment domains (CARDs) a DExD/H box helicase domain and a C-terminal regulatory domain. These domains enable RIG-I to recognize and bind viral RNA initiating downstream signaling for immune responses.
- Biological function summary
RIG-I contributes significantly to the innate immune response. It acts to sense viral RNA and triggers the production of type I interferons and other pro-inflammatory cytokines. This protein functions as part of a complex that includes MAVS (mitochondrial antiviral signaling protein) and other signaling adapters. Upon activation RIG-I undergoes a conformational change leading to the exposure of its CARDs which interact with CARDs of MAVS facilitating downstream signaling to induce an antiviral state in host cells.
- Pathways
RIG-I plays a central role in the RNA sensing pathway critical for antiviral immunity. This pathway involves several steps beginning with the recognition of viral RNA leading to the activation of interferon regulatory factors like IRF3 and IRF7 as well as nuclear factor kappa B (NF-κB). These factors then promote the expression of interferon-stimulated genes (ISGs). RIG-I also relates closely to the Jak-STAT signaling pathway which is activated by interferons and enhances the transcription of ISGs further amplifying the antiviral response.
- Associated diseases and disorders
RIG-I is often associated with viral infections such as hepatitis C and influenza. By detecting viral RNA RIG-I activates immune responses that help to control these infections. However dysfunction or aberrations in RIG-I signaling can lead to autoimmune disorders such as Aicardi-Goutières syndrome where there is an inappropriate response to self nucleic acids. In these disease contexts RIG-I interacts with MAVS and indirectly with proteins involved in regulating immune responses such as STING which plays a role in the innate immune response against DNA viruses.
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Tested
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Expected
We have not tested this specific species and application combination in-house, but expect it will work. It is covered by our product promise.
Predicted
This species and application combination has not been tested, but we predict it will work based on strong homology. However, this combination is not covered by our product promise.
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3 product images
Immunocytochemistry/ Immunofluorescence - Anti-RIG-I/DDX58 antibody (ab238254)
Paraformaldehyde-fixed, 0.15% Triton X-100 permeabilized A431 (human epidermoid carcinoma cell line) cells labeling RIG-I/DDX58 with ab238254 at 10 μg/ml in ICC/IF, followed by AlexaFluor® 488 conjugated secondary antibody at 2 μg/ml (green). The nuclear counter stain is DAPI (blue).
-ve control: Unimmunized Goat IgG at 10 μg/ml, followed by AlexaFluor® 488 conjugated secondary antibody at 2 μg/ml.
Immunocytochemistry/ Immunofluorescence - Anti-RIG-I/DDX58 antibody (ab238254)
Paraformaldehyde-fixed, 0.15% Triton X-100 permeabilized HeLa (human epithelial cell line from cervix adenocarcinoma) cells labeling RIG-I/DDX58 with ab238254 at 10 μg/ml in ICC/IF, followed by AlexaFluor® 488 conjugated secondary antibody at 2 μg/ml (green). The nuclear counter stain is DAPI (blue).
-ve control: Unimmunized Goat IgG at 10 μg/ml, followed by AlexaFluor® 488 conjugated secondary antibody at 2 μg/ml.
Flow Cytometry (Intracellular) - Anti-RIG-I/DDX58 antibody (ab238254)
Flow cytometric analysis of paraformaldehyde-fixed, 0.5% Triton-X-100 permeabilized U937 (human histiocytic lymphoma cell line) cells labeling RIG-I/DDX58 with ab238254 at 10 μg/ml (blue) compared with unimmunized Goat IgG (black). An AlexaFluor®488 secondary antibody was used at 2 μg/ml.
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