• Product nameAnti-eIF4B (phospho S422) antibody
    See all eIF4B primary antibodies
  • Description
    Rabbit polyclonal to eIF4B (phospho S422)
  • SpecificityDetects endogenous levels of eIF4B only when phosphorylated at serine 422.
  • Tested applicationsSuitable for: ELISA, IHC-P, WB, ICC/IFmore details
  • Species reactivity
    Reacts with: Mouse, Rat, Human
  • Immunogen

    Synthetic phosphopeptide derived from human eIF4B around the phosphorylation site of serine 422 (T-G-SP-E-S).

  • Positive control
    • Human colon carcinoma tissue, extracts from NIH/3T3cells.


  • FormLiquid
  • Storage instructionsShipped at 4°C. Upon delivery aliquot and store at -20°C. Avoid freeze / thaw cycles.
  • Storage bufferPreservative: 0.02% Sodium Azide
    Constituents: 50% Glycerol, PBS (without Mg2+ and Ca2+), 150mM Sodium chloride, pH 7.4
  • Concentration information loading...
  • PurityImmunogen affinity purified
  • Purification notesThe antibody against non-phosphopeptide was removed by chromatography using non-phosphopeptide corresponding to the phosphorylation site.
  • ClonalityPolyclonal
  • IsotypeIgG
  • Research areas


Our Abpromise guarantee covers the use of ab59300 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
ELISA 1/40000.
IHC-P Use at an assay dependent concentration.
WB 1/500 - 1/1000. Detects a band of approximately 69 kDa (predicted molecular weight: 69 kDa).
ICC/IF Use a concentration of 1 - 5 µg/ml.


  • 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 (phospho S422) antibody images

  • All lanes : Anti-eIF4B (phospho S422) antibody (ab59300) at 1/500 dilution

    Lane 1 : extracts from NIH/3T3cells
    Lane 2 : extracts from NIH/3T3cells with immunizing peptide

    Predicted band size : 69 kDa
    Observed band size : 69 kDa
  • Ab59300 at 1/50 dilution staining human colon carcinoma without (left) and with (right) immunizing peptide; paraffin embedded.
  • ICC/IF image of ab59300 stained HeLa cells. The cells were 4% PFA fixed (10 min) and then incubated in 1%BSA / 10% normal goat serum / 0.3M glycine in 0.1% PBS-Tween for 1h to permeabilise the cells and block non-specific protein-protein interactions. The cells were then incubated with the antibody (ab59300, 1µg/ml) overnight at +4°C. The secondary antibody (green) was Alexa Fluor® 488 goat anti-rabbit IgG (H+L) used at a 1/1000 dilution for 1h. Alexa Fluor® 594 WGA was used to label plasma membranes (red) at a 1/200 dilution for 1h. DAPI was used to stain the cell nuclei (blue) at a concentration of 1.43µM.

References for Anti-eIF4B (phospho S422) antibody (ab59300)

This product has been referenced in:
  • Fromm-Dornieden C  et al. Novel polysome messages and changes in translational activity appear after induction of adipogenesis in 3T3-L1 cells. BMC Mol Biol 13:9 (2012). WB . Read more (PubMed: 22436005) »

See 1 Publication for this product

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