• USA Home
  • ABF192 - Anti-phospho-MDA-5 (Ser104)

ABF192 Sigma-Aldrich

Anti-phospho-MDA-5 (Ser104)

Anti-phospho-MDA-5 (Ser104), Cat. No. ABF192 is a rabbit polyclonal antibody that detects MDA-5 phosphorylated on Ser104 and has been tested for use in Western Blotting and Peptide Inhibition Assay.

Synonym: Interferon-induced helicase C domain-containing protein 1, CADM-140 autoantigen, Helicase with 2 CARD domains, Helicard, Interferon-induced with helicase C domain protein 1, Melanoma differentiation-associated protein 5, MDA-5, Murabutide down-regulated

  •  eCl@ss 32160702



Related Categories Antibodies, Primary Antibodies More...
packaging   200 µL (ABF192)
  25 µL (ABF192-25UL)
gene symbol   IFIH1(64135)
format   Affinity Purified
molecular weight   ~117 kDa observed; 116.69 kDa calculated. Uncharacterized bands may be observed in some lysate(s).
application(s)   Peptide Inhibition Assay
  Western Blotting
clone   Polyclonal Antibody
concentration   Please refer to lot specific datasheet.
host   Rabbit
species reactivity   Human
Species Reactivity Notes   Human.
NCBI accession no.   NP_071451.2
UniProt accession no.   Q9BYX4
gene symbol   MDA5
shipped in   3
Quality Assurance   Evaluated by Western Blotting in Daudi cell lysate.

Western Blotting Analysis: A 1:500 dilution of this antibody detected phospho-MDA-5 (Ser104) in 10 µg of Daudi cell lysate.



Unless otherwise stated in our catalog or other company documentation accompanying the product(s), our products are intended for research use only and are not to be used for any other purpose, which includes but is not limited to, unauthorized commercial uses, in vitro diagnostic uses, ex vivo or in vivo therapeutic uses or any type of consumption or application to humans or animals.


Peptide Inhibition Analysis: A 1:500 dilution from a representative lot detected phospho-MDA-5 (Ser104) in Raji cell lysate.

Research Category
Inflammation & Immunology

General description

Interferon-induced helicase C domain-containing protein 1 (UniProt: Q9BYX4; also known as EC:, Clinically amyopathic dermatomyositis autoantigen 140 kDa, CADM-140 autoantigen, Helicase with 2 CARD domains, Helicard, Interferon-induced with helicase C domain protein 1, Melanoma differentiation-associated protein 5, MDA-5, Murabutide down-regulated protein, RIG-I-like receptor 2, RLR-2, RNA helicase-DEAD box protein 116) is encoded by the IFIH1 (also known as MDA5, RH116) gene (Gene ID: 64135) in human. MDA-5 is an innate immune receptor that acts as a cytoplasmic sensor of viral nucleic acids and plays a major role in sensing viral infection and in the activation of a cascade of antiviral responses including the induction of type I interferons and pro-inflammatory cytokines. MDA-5 is widely expressed, but at low levels. Expression is detected at slightly higher levels in placenta, pancreas and spleen. Its ligands include mRNA lacking 2′-O-methylation at their 5′ cap and long-dsRNA. In the absence of ligands it is monomeric and homodimerizes in the presence of dsRNA ligands. Upon ligand binding it associates with mitochondria antiviral signaling protein (MAVS/IPS1), which activates the IKK-related kinases TBK1 and IKBKE that phosphorylate interferon regulatory factors IRF3 and IRF7. These factors activate transcription of antiviral immunological genes, including interferons alpha and beta. MDA-5 also plays an important role in enhancing natural killer cell function and is believed to be involved in growth inhibition and apoptosis in several tumor cell lines. MDA-5 contains 2 CARD domains; 1 helicase ATP-binding domain, 1 helicase C-terminal domain, and 1 RLR C-terminal regulatory domain.


Epitope: N-terminus

KLH-conjugated linear peptide corresponding to 12 amino acids surrounding Ser104 from the N-terminal region of human MDA-5.


This rabbit polyclonal antibody specifically detects human MDA-5 protein phosphorylated on Ser104.

Physical form

Affinity Purified

Purified rabbit polyclonal antibody in buffer containing 0.1M Tris-Glycine, 0.15M NaCl, 0.05% sodium azide, pH7.4 with 0.05% sodium azide.

Storage and Stability

Stable for 1 year at 2-8°C from date of receipt.

Safety & Documentation

Safety Information

Safety Information for this product is unavailable at this time.


Certificate of Analysis

Protocols & Articles


Western Blot Protocol | Immunoblotting Protocol

Western Blotting refers to the electrophoretic transfer of proteins from sodium dodecyl sulfate polyacrylamide gels to sheets of PVDF or nitrocellullose membrane, followed by immunodetection of prote...
Keywords: AGE, Buffers, Cell disruption, Detergents, Dialysis, Electroblotting, Electrophoresis, Enzyme activity, Gel electrophoresis, Immunoprecipitation, PAGE, Protein extraction, Purification, Sample preparations, Western blot

Related Products

Technical Service:

Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.

Bulk Ordering & Pricing:

Need larger quantities for your development, manufacturing or research applications?