• Product nameAnti-eIF4B antibody
    See all eIF4B primary antibodies
  • Description
    Rabbit polyclonal to eIF4B
  • Tested applicationsSuitable for: WBmore details
  • Species reactivity
    Reacts with: Human
    Predicted to work with: Mouse, Rat, Cow
  • Immunogen

    Synthetic peptide conjugated to KLH derived from within residues 550 to the C-terminus of Human eIF4B.

    (Peptide available as ab50102.)

  • Positive control
    • This antibody gave a positive signal in the following whole cell lysates: HeLa (Human epithelial carcinoma cell line) Jurkat (Human T cell lymphoblast-like cell line) A431 (Human epithelial carcinoma cell line) HEK293 (Human embryonic kidney cell line) MCF7 (Human breast adenocarcinoma cell line)


  • FormLiquid
  • Storage instructionsShipped at 4°C. Store at +4°C short term (1-2 weeks). Upon delivery aliquot. Store at -20°C or -80°C. Avoid freeze / thaw cycle.
  • Storage bufferPreservative: 0.02% Sodium Azide
    Constituents: 1% BSA, PBS, pH 7.4
  • Concentration information loading...
  • PurityImmunogen affinity purified
  • ClonalityPolyclonal
  • IsotypeIgG
  • Research areas


Our Abpromise guarantee covers the use of ab50103 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 1/250. Detects a band of approximately 80 kDa (predicted molecular weight: 69 kDa).


  • FunctionRequired for the binding of mRNA to ribosomes. Functions in close association with EIF4-F and EIF4-A. Binds near the 5'-terminal cap of mRNA in presence of EIF-4F and ATP. Promotes the ATPase activity and the ATP-dependent RNA unwinding activity of both EIF4-A and EIF4-F.
  • Sequence similaritiesContains 1 RRM (RNA recognition motif) domain.
  • Post-translational
    Phosphorylated at Ser-422 by RPS6KA1 and RPS6KB1; phosphorylation enhances the affinity of EIF4B for the EIF3 complex.
  • Information by UniProt
  • Database links
  • Alternative names
    • 2310046H11Rik antibody
    • AL024095 antibody
    • C85189 antibody
    • EIF 4B antibody
    • eIF-4B antibody
    • EIF4B antibody
    • Eukaryotic initiation factor 4B antibody
    • Eukaryotic translation initiation factor 4B antibody
    • IF4B_HUMAN antibody
    • PRO1843 antibody
    see all

Anti-eIF4B antibody images

  • All lanes : Anti-eIF4B antibody (ab50103) at 1/250 dilution

    Lane 1 : HeLa (Human epithelial carcinoma cell line) Whole Cell Lysate
    Lane 2 : Jurkat whole cell lysate (ab7899)
    Lane 3 : A431 whole cell lysate (ab7909)
    Lane 4 : HEK293 whole cell lysate (ab7902)
    Lane 5 : HepG2 (Human hepatocellular liver carcinoma cell line) Whole Cell Lysate
    Lane 6 : MCF7 (Human breast adenocarcinoma cell line) Whole Cell Lysate

    Lysates/proteins at 10 µg per lane.

    IRDye 680 Conjugated Goat Anti-Rabbit IgG (H+L) at 1/10000 dilution

    Performed under reducing conditions.

    Predicted band size : 69 kDa
    Observed band size : 80 kDa (why is the actual band size different from the predicted?)
    Additional bands at : 46 kDa. We are unsure as to the identity of these extra bands.

References for Anti-eIF4B antibody (ab50103)

This product has been referenced in:
  • Domingo-Gil E  et al. Identification of cellular genes induced in human cells after activation of the OAS/RNaseL pathway by vaccinia virus recombinants expressing these antiviral enzymes. J Interferon Cytokine Res 30:171-88 (2010). Read more (PubMed: 20038200) »

See 1 Publication for this product

Product Wall

Abcam has not validated the combination of species/application used in this Abreview.
Application Immunocytochemistry/ Immunofluorescence
Sample Human Cell (HeLa)
Specification HeLa
Fixative Paraformaldehyde
Permeabilization Yes - 0.5% Triton X100 in PBS

Dr. Kirk McManus

Verified customer

Submitted Oct 14 2008