2. Signaling Pathways
  3. Cell Cycle/DNA Damage
  4. Eukaryotic Initiation Factor (eIF)

Eukaryotic Initiation Factor (eIF)

Eukaryotic Initiation Factor (eIF)

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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.

Cat. No. Product Name Effect Purity Chemical Structure
  • HY-158201
    ATF4-IN-1
    		Activator 98.02%
    ATF4-IN-1 (Compound 21) is an ATF4 inhibitor and also an eIF2B activator. ATF4-IN-1 can be used in research on neurodegenerative diseases.
    ATF4-IN-1
  • HY-153339
    E235
    		Activator 98.85%
    E235 is an expression regulator of activates transcription factor 4 (ATF4). E235 reduces cell viability by activating integrated stress response (ISR) and DNA damage response signals. E235 has anti-proliferative activity and can be used for tumor research.
    E235
  • HY-W050044
    L-Azetidine-2-carboxylic acid
    		Activator 99.78%
    L-Azetidine-2-carboxylic acid is a proline analog. L-Azetidine-2-carboxylic acid upregulates the lipid autophagy marker LC3-II via activation of the PERK pathway. L-Azetidine-2-carboxylic acid increases pro-apoptotic BAX protein. L-Azetidine-2-carboxylic acid induces ATF6 cleavage and upregulates phosphorylated eIF2α levels. L-Azetidine-2-carboxylic acid induces ER stress, inducing protein misfolding and aggregation. L-Azetidine-2-carboxylic acid shows teratogenic, pro-inflammatory and pro-apoptotic effects.
    L-Azetidine-2-carboxylic acid
  • HY-16366
    Briciclib
    		Inhibitor 99.63%
    Briciclib (ON 014185) is a derivative of ON 013100, and has the potential in targeting eIF4E for solid cancers.
    Briciclib
  • HY-149555
    DNL343
    		Activator 99.94%
    DNL343 is a potent, selective, orally active and brain-penetrant activator of eukaryotic initiation factor eIF2B. DNL343 inhibits the activity of the integrated stress response (ISR) in the central nervous system (CNS) and reverses neurodegeneration and neuroinflammation. DNL343 also prevents motor dysfunction and premature death in eIF2B loss-of-function (LOF) mutant mice. DNL343 can be used in the study of neurodegenerative diseases.
    DNL343
  • HY-147831
    EIF2α activator 1
    		Activator 98.77%
    EIF2α activator 1 (Compound 40) is an activator of eukaryotic initiation factor 2 alpha (eIF2α) phosphorylation. EIF2α activator 1 increases the expression level of eIF2α downstream proteins, ATF and CHOP. EIF2α activator 1 exhibits antiproliferative activity againist K562 and PBMC cells with IC50s of 4.00 and 19.3 μM, respectively.
    EIF2α activator 1
  • HY-100733
    4E2RCat
    		Inhibitor ≥98.0%
    4E2RCat is an inhibitor of eIF4E-eIF4G interaction with an IC50 of 13.5 μM.
    4E2RCat
  • HY-N7071A
    Maduramicin ammonium
    		Inhibitor 99.89%
    Maduramicin (Maduramycin) ammonium is isolated from the actinomycete Actinomadura rubra. Maduramicin ammonium is an oral active anticoccidial agent used in research related to Eimeria, Adenosarcina, Enterococcus faecalis, and Enterococcus disperitus infections. Maduramicin ammonium induces apoptosis (apoptosis) in chicken cardiomyocytes through both intrinsic and extrinsic pathways and also impairs autophagic flux and induces rhabdomyolysis by activating the AMPK-mediated eIF2α-ATF4 endoplasmic reticulum stress pathway.
    Maduramicin ammonium
  • HY-148422
    Rohinitib
    		Inhibitor 99.40%
    Rohinitib is a potent and specific eIF4A inhibitor. Rohinitib induces cell apoptosis of acute myeloid leukemia (AML) cell lines and reduces the leukemia burden of AML xenograft model. Rohinitib can be used for the research of AML.
    Rohinitib
  • HY-147832
    EIF2α activator 2
    		Activator 99.88%
    EIF2α activator 2 (Compound 1) is an activator of eukaryotic initiation factor 2 alpha (eIF2α) phosphorylation. EIF2α activator 2 exhibits high potency in SRB cell proliferation assays (IC50=0.46 μM). EIF2α activator 2 exhibits antiproliferative activity againist K562 and PBMC cells with IC50s of 4.79 and 10.52 μM, respectively.
    EIF2α activator 2
  • HY-101991
    ML291
    		Activator 99.74%
    ML291 is a UPR (unfolded protein response)-inducing sulfonamidebenzamide. ML291 overwhelms the adaptive capacity of the UPR and induces apoptosis in a variety of solid cancer models. ML291 can activate the PERK/eIF2a/CHOP (apoptotic) arm of the UPR and reduce leukemic cell burden.
    ML291
  • HY-19356A
    Didesmethylrocaglamide
    		Inhibitor 98.49%
    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.
    Didesmethylrocaglamide
  • HY-145262
    eIF4E-IN-2
    		Inhibitor 98.76%
    eIF4E-IN-2 is a potent inhibitor of eukaryotic initiation factor 4e (eIF4e). eIF4E-IN-2 has the potential for researching eIF4e dependent diseases, including the research of cancer (extracted from patent WO2021003157A1, compound 1188). eIF4E-IN-2 is a click chemistry reagent, it contains an Alkyne group and can undergo copper-catalyzed azide-alkyne cycloaddition (CuAAc) with molecules containing Azide groups.
    eIF4E-IN-2
  • HY-33838
    eIF4A3-IN-8
    		Inhibitor 99.98%
    eIF4A3-IN-8 is a selective ATP-competitive eukaryotic initiation factor 4A3 (eIF4A3) inhibitor. eIF4A3-IN-8 can serve as a valuable chemical probe to elucidate the detailed function of eIF4A3 and EJC (exon junction complex).
    eIF4A3-IN-8
  • HY-160196
    HC-7366
    		Inhibitor 99.95%
    HC-7366 (compound 3) has GCN2 inhibitory activity, with the IC50 value less than 0.05 μM. HC-7366 plays an important role in anti-tumor research.
    HC-7366
  • HY-15359
    Episilvestrol
    		Inhibitor 99.86%
    Episilvestrol is a derivative of silvestrol, isolated from the fruits and twigs of Aglaia perviridis, and is a specific eIF4A-targeting translation inhibitor, with antitumor activity.
    Episilvestrol
  • HY-43913
    (R)-eIF4A3-IN-2
    (R)-eIF4A3-IN-2 is a less active enantiomer of eIF4A3-IN-2. eIF4A3-IN-2 is a highly selective and noncompetitive eukaryotic initiation factor 4A-3 (eIF4A3) inhibitor with an IC50 of 110 nM.
    (R)-eIF4A3-IN-2
  • HY-W009034
    Fmoc-Suberol
    Fmoc-Suberol is a protein cross-linking agent.
    Fmoc-Suberol
  • HY-19831A
    (Z)-4EGI-1
    		Inhibitor ≥98.0%
    (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.
    (Z)-4EGI-1
  • HY-112163A
    rel-Zotatifin
    		Inhibitor
    rel-Zotatifin is the racemic isomer of Zotatifin, acts as an eIF4A inhibitor with activity less than Zotatifin. 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.
    rel-Zotatifin
Cat. No. Product Name / Synonyms Application Reactivity