EIF3A Rabbit Polyclonal Antibody
No Size Price Availability  
ARP8661-01 50ul 1500.00 In Stock
ARP8661-01 100ul 2000.00 In Stock
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Source: Rabbit Gene Id: 8661
Isotype: IgG Swiss Prot: Q14152
purity: Affinity purification
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). 1. Masutani, M. et al. (2007) EMBO J 26, 3373-83. 2. Chaudhuri, J. et al. (1999) J Biol Chem 274, 17975-80. 3. Holz, M.K. et al. (2005) Cell 123, 569-80. 4. Harris, T.E. et al. (2006) EMBO J 25, 1659-68.
Reactivity Human, Mouse, Rat
Tested applications WB
Clonality Polyclonal Antibody
Calculated MW 167 kDa
Recommended Dilutions
WB 1:500-1:1000
IHC 1:50-1:100
Immunogen Recombinant protein of human EIF3A
Storage Store at 4°C (regular) or -20°C (long term). Avoid freeze / thaw cycles. Buffer: PBS with 0.02% sodium azide, 50% glycerol, pH7.3.
Synonym EIF3, P167, p180, p185, TIF32, EIF3S10, eIF3-p170, eIF3-theta
This product is for research use only, not for diagnostic or therapeutic use!

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