1. Cell Cycle/DNA Damage
  2. Eukaryotic Initiation Factor (eIF)

Eukaryotic Initiation Factor (eIF)

Eukaryotic initiation factors (eIFs) are proteins involved in the initiation phase of eukaryotic translation. These proteins help stabilize the formation of the functional ribosome around the start codon and also provide regulatory mechanisms in translation initiation.

Eukaryotic initiation factor 2B (eIF2B) is a guanine nucleotide-exchange factor which mediates the exchange of GDP (bound to initiation factor eIF2) for GTP, thus regenerating the active [eIF2.GTP] complex that is required for peptide-chain initiation. The activity of eIF2B is a key control point for eukaryotic protein synthesis and is altered in response to viral infection, hormones, nutrients, growth factors and certain stresses.

Eukaryotic translation initiation factor 4E (eIF4E) is best known for its function in the initiation of protein synthesis on capped mRNAs in the cytoplasm. Eukaryotic initiation factor (elF) 4A functions as a subunit of the initiation factor complex elF4F, which mediates the binding of mRNA to the ribosome.

Eukaryotic Initiation Factor (eIF) Related Products (24):

Cat. No. Product Name Effect Purity
  • HY-112654
    GCN2iB Inhibitor 99.81%
    GCN2iB is an ATP-competitive inhibitor of a serine/threonine-protein kinase general control nonderepressible 2 (GCN2), with an IC50 of 2.4 nM.
  • HY-19356
    Rocaglamide Inhibitor 99.34%
    Rocaglamide (Roc-A) is isolated from the genus Aglaia and can be used for coughs, injuries, asthma and inflammatory skin diseases. Rocaglamide is a potent inhibitor of NF-κB activation in T-cells. Rocaglamide is a potent and selective heat shock factor 1 (HSF1) activation inhibitor with an IC50 of ~50 nM. Rocaglamide inhibits the function of the translation initiation factor eIF4A. Rocaglamide also has anticancer properties in leukemia[1][2][3].
  • HY-100877
    GCN2-IN-1 Inhibitor
    GCN2-IN-1 (A-92) is a potent general control nonderepressible 2 kinase (GCN2) inhibitor with an IC50 of <0.3 μM in the enzyme assay and an IC50 of 0.3-3 μM in the cell assay[1].
  • HY-13251
    Silvestrol Inhibitor 98.11%
    Silvestrol is a eukaryotic translation initiation factor 4A (eIF4A) inhibitor isolated from the fruits and twigs of Aglaia foveolata. Silvestrol induces autophagy and caspase-mediated apoptosis[1][2][3].
  • HY-19831
    4EGI-1 Inhibitor
    4EGI-1 is an inhibitor of eIF4E/eIF4G interaction, with a Kd of 25 μM against eIF4E binding.
  • HY-139872
    eIF4A3-IN-4 Inhibitor
    eIF4A3-IN-4 is a novel eIF4A inhibitor with an IC50 value of 8.6 μM.
  • HY-108666
    ATPγS tetralithium salt Chemical
    ATPγS (tetralithium salt) is a substrate for the nucleotide hydrolysis and RNA unwinding activities of eukaryotic translation initiation factor eIF4A[1].
  • HY-125021
    2BAct Activator 98.70%
    2BAct is a highly selective, and orally active eIF2B (eukaryotic initiation factor 2B) activator with an EC50 of 33 nM. 2BAct prevents neurological defects caused by a chronic integrated stress response. 2BAct is able to penetrate the central nervous system (CNS). 2BAct displays improved solubility and pharmacokinetics relative to eIF2B activator ISRIB (HY-12495)[1].
  • HY-101785
    eIF4A3-IN-2 Inhibitor 99.52%
    eIF4A3-IN-2 is a highly selective and noncompetitive eukaryotic initiation factor 4A-3 (eIF4A3) inhibitor with an IC50 of 110 nM[1].
  • HY-112163
    Zotatifin Inhibitor 99.58%
    Zotatifin (eFT226) is a potent, selective, and well-tolerated eIF4A inhibitor. Zotatifin promotes eIF4A binding to specific mRNA sequences with recognition motifs in the 5’-UTRs (IC50=2 nM) and interferes with the assembly of the eIF4F initiation complex[1]. Zotatifin shows robust antiviral effects, it effectively reduces viral infectivity by inhibiting SARS-CoV-2 NP protein biogenesis (IC90=37 nM)[2]. Zotatifin induces cell apoptosis[1].
  • HY-136453
    CR-1-31-B Inhibitor 98.23%
    CR-1-31-B is a synthetic rocaglate and a potent eIF4A inhibitor. CR-1-31-B exhibits powerful inhibitory effects over eIF4A by perturbing the interaction between eIF4A and RNA, sequentially impeding initiation during protein synthesis. CR-1-31-B perturbs association of Plasmodium falciparum eIF4A (PfeIF4A) with RNA. CR-1-31-B induces apoptosis of neuroblastoma and gallbladder cancer cells[1][2][3][4].
  • HY-14427
    4E1RCat Inhibitor
    4E1RCat is an inhibitor of cap-dependent translation, and inhibits eIF4E:eIF4GI interaction, with an IC50 an of ∼4 μM.
  • HY-130240
    GCN2-IN-6 Inhibitor 98.47%
    GCN2-IN-6 (Compound 6d) is a potent, and orally available GCN2 inhibitor confirmed by in-house enzymatic (IC50 of 1.8 nM) and cellular assays (IC50 of 9.3 nM). GCN2-IN-6 is also a eIF2α kinase PERK inhibitor with an IC50 of 0.26 nM (in enzymatic assay) and 230 nM (in cells)[1].
  • HY-19560
    SBI-0640756 Inhibitor 98.52%
    SBI-0640756 (SBI-756) is an inhibitor of eIF4G1 and disrupts the eIF4F complex.
  • HY-101513
    eIF4A3-IN-1 Inhibitor 99.70%
    eIF4A3-IN-1 (compound 53a) is a selective eukaryotic initiation factor 4A3 (eIF4A3) inhibitor (IC50=0.26 μM; Kd=0.043 μM), which binds to a non-ATP binding site of eIF4A3 and shows significant cellular nonsense-mediated RNA decay (NMD) inhibition at 10 and 3 μM and can be as a probe for further study of eIF4A3, the exon junction complex (EJC), and NMD[1].
  • HY-100733
    4E2RCat Inhibitor
    4E2RCat is an inhibitor of eIF4E-eIF4G interaction with an IC50 of 13.5 μM.
  • HY-16366
    Briciclib Inhibitor 99.65%
    Briciclib (ON 014185) is a derivative of ON 013100, and has the potential in targeting eIF4E for solid cancers.
  • HY-15359
    Episilvestrol Inhibitor 99.86%
    Episilvestrol is a derivative of silvestrol, isolated from the fruits and twigs of Aglaia silvestris, and is a specific eIF4A-targeting translation inhibitor, with antitumor activity.
  • HY-19831A
    (Z)-4EGI-1 Inhibitor 98.01%
    (Z)-4EGI-1 is the Z-isomer of 4EGI-1 and is an inhibitor of eIF4E/eIF4G interaction and of translation initiation. (Z)-4EGI-1 effectively binds to eIF4E with an IC50 of 43.5 μM and a Kd value of 8.74 μM. (Z)-4EGI-1 has anticancer activity[1][2].
  • HY-19356A
    Didesmethylrocaglamide Inhibitor 98.40%
    Didesmethylrocaglamide, a derivative of Rocaglamide, is a potent eukaryotic initiation factor 4A (eIF4A) inhibitor. Didesmethylrocaglamide has potent growth-inhibitory activity with an IC50 of 5 nM. Didesmethylrocaglamide suppresses multiple growth-promoting signaling pathways and induces apoptosis in tumor cells. Antitumor activity[1][2].