• Product name

    Anti-eIF4A3 antibody [2256C1]
    See all eIF4A3 primary antibodies
  • Description

    Mouse monoclonal [2256C1] to eIF4A3
  • Host species

  • Tested applications

    Suitable for: WB, Dot blotmore details
  • Species reactivity

    Reacts with: Human
  • Immunogen

    Recombinant human DDX48

  • Positive control

    • Recombinant human DDX48


  • Form

  • Storage instructions

    Shipped at 4°C. Store at +4°C short term (1-2 weeks). Upon delivery aliquot. Store at -20°C long term.
  • Storage buffer

    pH: 7.40
    Preservative: 0.05% Sodium azide
    Constituents: 1% BSA, 0.03% Potassium phosphate, 0.812% Sodium chloride, 0.1312% Sodium phosphate, 0.0225% Potassium chloride, 0.0204% Monobasic dihydrogen potassium phosphate, 0.1136% Dibasic monohydrogen sodium phosphate
  • Concentration information loading...
  • Purity

    Protein G purified
  • Purification notes

    ab50741 was purified using protein G column chromatography from culture supernatant of hybridoma cultured in a medium containing bovine IgG-depleted (approximately 95%) fetal bovine serum.
  • Clonality

  • Clone number

  • Isotype

  • Research areas


Our Abpromise guarantee covers the use of ab50741 in the following tested applications.

The application notes include recommended starting dilutions; optimal dilutions/concentrations should be determined by the end user.

Application Abreviews Notes
WB Use at an assay dependent dilution. Predicted molecular weight: 47 kDa.
Dot blot Use at an assay dependent dilution.


  • Function

    ATP-dependent RNA helicase. Component of a splicing-dependent multiprotein exon junction complex (EJC) deposited at splice junction on mRNAs. The EJC is a dynamic structure consisting of a few core proteins and several more peripheral nuclear and cytoplasmic associated factors that join the complex only transiently either during EJC assembly or during subsequent mRNA metabolism. Core components of the EJC, that remains bound to spliced mRNAs throughout all stages of mRNA metabolism, functions to mark the position of the exon-exon junction in the mature mRNA and thereby influences downstream processes of gene expression including mRNA splicing, nuclear mRNA export, subcellular mRNA localization, translation efficiency and nonsense-mediated mRNA decay (NMD). Constitutes at least part of the platform anchoring other EJC proteins to spliced mRNAs. Its RNA-dependent ATPase and RNA-helicase activities are induced by CASC3, but abolished in presence of the MAGOH/RBM8A heterodimer, thereby trapping the ATP-bound EJC core onto spliced mRNA in a stable conformation. The inhibition of ATPase activity by the MAGOH/RBM8A heterodimer increases the RNA-binding affinity of the EJC. Involved in translational enhancement of spliced mRNAs after formation of the 80S ribosome complex. Binds spliced mRNA in sequence-independent manner, 20-24 nucleotides upstream of mRNA exon-exon junctions. Shows higher affinity for single-stranded RNA in an ATP-bound core EJC complex than after the ATP is hydrolyzed.
  • Tissue specificity

    Ubiquitously expressed.
  • Sequence similarities

    Belongs to the DEAD box helicase family. eIF4A subfamily.
    Contains 1 helicase ATP-binding domain.
    Contains 1 helicase C-terminal domain.
  • Cellular localization

    Nucleus. Nucleus speckle. Cytoplasm. Nucleocytoplasmic shuttling protein. Travels to the cytoplasm as part of the exon junction complex (EJC) bound to mRNA. Detected in dendritic layer as well as the nuclear and cytoplasmic (somatic) compartments of neurons. Colocalizes with STAU1 and FMR1 in dendrites.
  • Information by UniProt
  • Database links

  • Alternative names

    • ATP-dependent RNA helicase DDX48 antibody
    • ATP-dependent RNA helicase eIF4A-3 antibody
    • DDX48 antibody
    • DEAD box protein 48 antibody
    • eIF-4A-III antibody
    • eIF4A-III antibody
    • EIF4A3 antibody
    • eIF4AIII antibody
    • Eukaryotic initiation factor 4A-III antibody
    • Eukaryotic initiation factor 4A-like NUK-34 antibody
    • Eukaryotic translation initiation factor 4A isoform 3 antibody
    • hNMP 265 antibody
    • IF4A3_HUMAN antibody
    • NMP 265 antibody
    • NMP265 antibody
    • Nuclear matrix protein 265 antibody
    • NUK34 antibody
    see all



This product has been referenced in:

  • Haremaki T  et al. Regulation of vertebrate embryogenesis by the exon junction complex core component Eif4a3. Dev Dyn 239:1977-87 (2010). Read more (PubMed: 20549732) »
See 1 Publication for this product

Customer reviews and Q&As

Western blot
Rat Cell lysate - whole cell (Cardiomyocytes soluble cell extracts)
Loading amount
15 µg
Cardiomyocytes soluble cell extracts
Gel Running Conditions
Reduced Denaturing
Blocking step
BSA as blocking agent for 1 hour(s) and 20 minute(s) · Concentration: 5% · Temperature: 25°C

Abcam user community

Verified customer

Submitted Dec 13 2012

For licensing inquiries, please contact partnerships@abcam.com

Sign up