Render Target: STATIC
Render Timestamp: 2024-12-20T12:12:44.662Z
Commit: f2d32940205a64f990b886d724ccee2c9935daff
XML generation date: 2024-08-01 15:23:58.835
Product last modified at: 2024-09-03T12:00:14.285Z
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PDP - Template Name: Polyclonal Antibody
PDP - Template ID: *******59c6464

eIF3J Antibody #3261

Filter:
  • WB
  • IP

    Supporting Data

    REACTIVITY H M R
    SENSITIVITY Endogenous
    MW (kDa) 35
    SOURCE Rabbit
    Application Key:
    • WB-Western Blotting 
    • IP-Immunoprecipitation 
    Species Cross-Reactivity Key:
    • H-Human 
    • M-Mouse 
    • R-Rat 

    Product Information

    Product Usage Information

    Application Dilution
    Western Blotting 1:1000
    Immunoprecipitation 1:50

    Storage

    Supplied in 10 mM sodium HEPES (pH 7.5), 150 mM NaCl, 100 µg/ml BSA and 50% glycerol. Store at –20°C. Do not aliquot the antibody.

    Protocol

    Specificity / Sensitivity

    eIF3J Antibody detects endogenous levels of total eIF3J protein.

    Species Reactivity:

    Human, Mouse, Rat

    Source / Purification

    Polyclonal antibodies are produced by immunizing animals with a synthetic peptide corresponding to the sequence of human eIF3J. Antibodies are purified by protein A and peptide affinity chromatography.

    Background

    Translation initiation requires a set of factors to facilitate the association of the 40S ribosomal subunit with mRNA. The eIF4F complex, consisting of eIF4E, eIF4A, and eIF4G, binds to the 5' cap structure of mRNA. eIF4F and eIF4B unwind the secondary structure of mRNA at its 5' untranslated region. The 40S ribosomal subunit, along with some initiation factors, including eIF3, then binds to the 5' mRNA cap and searches along the mRNA for the initiation codon. eIF3 is a large translation initiation complex with 10 to 13 different subunits. eIF3A, eIF3B, eIF3C, eIF3E, eIF3F, and eIF3H are the core subunits critical for the function of this complex. eIF3 physically interacts with eIF4G, which may be responsible for the association of the 40S ribosomal subunit with mRNA (1). eIF3 also stabilizes the binding of Met-tRNAf.eIF2.GTP to the 40S ribosomal subunit and helps keep the integrity of the resulting complex upon addition of the 60S ribosomal subunit (2). Studies have shown that mTOR interacts with eIF3 directly (3,4). When cells are stimulated by hormones or mitogenic signals, mTOR binds to the eIF3 complex and phosphorylates S6K1 (3). This process results in the dissociation of S6K1 from eIF3 and S6K1 activation. The activated S6K1 then phosphorylates its downstream targets, including ribosomal protein S6 and eIF4B, resulting in stimulation of translation. Further findings demonstrated that activated mTOR signaling induces the association of eIF3 with eIF4G upon stimulation with insulin (3).

    One of the smallest subunits of eIF3, eIF3J, is critical in 40S initiation complex assembly (5). eIF3J has been shown to associate with the aminoacyl site and mRNA entry channel of the 40S ribosomal subunit (6). eIF3J has also been shown to have an additional role in the recycling of post-termination complexes (7).
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