2. Signaling Pathways
  3. MAPK/ERK Pathway
  4. MEK

MEK

Mitogen-activated protein kinase kinase; MAPKK; MAP2K

MEK

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MEK (Mitogen-activated protein kinase kinase, MAPKK) is a kinase enzyme which phosphorylates mitogen-activated protein kinases (MAPKs). The activated MAPK leads to the phosphorylation of downstream transcription factors that regulate various responses such as stress signaling, pathogen response, and hormone signaling.

In general, the MAPKKK phosphorylates a serine or threonine residue on a MAPKK, which sequentially activates a MAPK (ERK, p38 or JNK), the last protein in the cascade. Activation of the p38 MAPK occurs mainly through mitogen-activated protein kinase kinase 3 (MKK3) and MKK6 (sometimes MKK4). The JNK is regulated by two upstream MAP2Ks: MKK4 and MKK7. The highly homologous kinases, MEK1 and MEK2, act downstream of Ras and Raf to activate ERK mitogen-activated protein kinases.

MEK Isoform Specific Products:

MEK Isoform Comparison
Cat. No. Product Name Effect Purity Chemical Structure
  • HY-W357818
    Glycinexylidide
    		Inhibitor
    Glycinexylidide (GX) is the active metabolite of Lidocaine. Lidocaine is a local agent that can suppress or relieve pain, that inhibits sodium channels involving complex voltage and dependence. Lidocaine also reduces the growth, migration and invasion of gastric cancer cells. Glycinexylidide has research potential for use in anesthesia, cancer, and cardiovascular disease.
    Glycinexylidide
  • HY-107417
    Hypothemycin
    		Inhibitor ≥98.0%
    Hypothemycin, a fungal polyketide, is a multikinase inhibitor with Kis of 10/70 nM, 17/38 nM, 90 nM, 900 nM/1.5 μM, and 8.4/2.4 μM for VEGFR2/VEGFR1, MEK1/MEK2, FLT-3, PDGFRβ/PDGFRα, and ERK1/ERK2, respectively.
    Hypothemycin
  • HY-131295
    PD0325901-O-C2-dioxolane
    		Inhibitor 98.62%
    PD0325901-O-C2-dioxolane has main portion of MEK inhibitor PD0325901. PD0325901-O-C2-dioxolane and a ligand of VHL or CRBN E3 ligase can be used in the synthesis of MEK1/2 degrader.
    PD0325901-O-C2-dioxolane
  • HY-15496
    E6201
    		Inhibitor
    E6201 (ER-806201) is an ATP-competitive dual kinase inhibitor of MEK1 and FLT3. E6201 inhibits MEK1- induced ERK2 phosphorylation with an IC50 value of 5.2 nM, MKK4-induced JNK phosphorylation with an IC50 value of 91 nM, and MKK6-induced p38 MAPK phosphorylation with an IC50 value of 19 nM. Anti-tumor and anti-psoriasis efficacy.
    E6201
  • HY-10216
    Refametinib (R enantiomer)
    		Inhibitor
    Refametinib R enantiomer is a MEK inhibitor extracted from patent WO2007014011A2, compound 1022, has an EC50 of 2.0-15 nM.
    Refametinib (R enantiomer)
  • HY-N0811
    Anemarsaponin B
    		Inhibitor
    Anemarsaponin B is a steroidal saponin. Anemarsaponin B decreases the protein and mRNA levels of iNOS and COX-2. Anemarsaponin B reduces the expressions and productions of pro-inflammatory cytokines, including TNF-a and IL-6. Anemarsaponin B inhibits the nuclear translocation of the p65 subunit of NF-κB by blocking the phosphorylation of IκBα. Anemarsaponin B also inhibits the phosphorylation of MAP kinase kinases 3/6 (MKK3/6) and mixed lineage kinase 3 (MLK3). Anti-inflammatory effect .
    Anemarsaponin B
  • HY-122404
    Xantocillin
    		Inhibitor
    Xantocillin (Xanthocillin X) is a marine agent extracted from Penicillium commune, induces autophagy through inhibition of the MEK/ERK pathway.
    Xantocillin
  • HY-160414
    TRX-COBI
    		Inhibitor
    TRX-COBI ((R,R)-TRX-COBI; Trx-cobimetinib) is a MEK inhibitor targeting TRX fragments based on Fe2+. TRX-COBI has antitumor activity.
    TRX-COBI
  • HY-139638
    MEK4 inhibitor-1
    		Inhibitor 98.89%
    MEK4 inhibitor-1 is a novel MEK4 inhibitor against pancreatic adenocarcinoma with an IC50 value of 61 nM.
    MEK4 inhibitor-1
  • HY-101522
    CHMFL-EGFR-202
    		Inhibitor 99.75%
    CHMFL-EGFR-202 is a potent, irreversible inhibitor of epidermal growth factor receptor (EGFR) mutant kinase, with IC50s of 5.3 nM and 8.3 nM for drug-resistant mutant EGFR T790M and WT EGFR kinases, respectively. CHMFL-EGFR-202 exhibits ～10-fold selectivity for EGFR L858R/T790M against the EGFR wild-type in cells. CHMFL-EGFR-202 adopts a covalent “DFG-in-C-helix-out” inactive binding conformation with EGFR, with strong antiproliferative effects against EGFR mutant-driven nonsmall-cell lung cancer (NSCLC) cell lines.
    CHMFL-EGFR-202
  • HY-B0185G
    Lidocaine (GMP)
    		Inhibitor
    Lidocaine (GMP) is Lidocaine (HY-B0185) produced by using GMP guidelines. GMP small molecules work appropriately as an auxiliary reagent for cell therapy manufacture. Lidocaine inhibits sodium channels involving complex voltage and using dependence. Lidocaine decreases growth, migration and invasion of gastric carcinoma cells via up-regulating miR-145 expression and further inactivation of MEK/ERK and NF-κB signaling pathways. Lidocaine is an amide derivative and has potential for the research of ventricular arrhythmia.
    Lidocaine (GMP)
  • HY-12028R
    PD98059 (Standard)
    		Inhibitor
    PD98059 (Standard) is the analytical standard of PD98059. This product is intended for research and analytical applications. PD98059 is a potent and selective MEK inhibitor with an IC50 of 5 µM. PD98059 binds to the inactive form of MEK, thereby preventing the activation of MEK1 (IC50 of 2-7 µM) and MEK2 (IC50 of 50 µM) by upstream kinases. PD98059 is a ERK1/2 signaling inhibitor. PD98059 is a ligand for the aryl hydrocarbon receptor (AHR), and suppresses TCDD binding (IC50 of 4 μM) and AHR transformation (IC50 of 1 μM). PD98059 also inhibits Mycobacterium bovis Bacillus CalmetteGuerin (BCG)-induced autophagy.
    PD98059 (Standard)
  • HY-N12740
    Napyradiomycin B4
    		Inhibitor
    Napyradiomycin B4 is a Napyradiomycin derivative, which inhibits the RANKL-induced MEK-ERK signaling pathway. Napyradiomycin B4 attenuates osteoclastogenesis and prevents alveolar bone destruction in experimental periodontitis.
    Napyradiomycin B4
  • HY-100627A
    APS-2-79 hydrochloride
    		Antagonist
    APS-2-79 hydrochloride is a KSR-dependent MEK antagonist. APS-2-79 inhibits ATPbiotin binding to KSR2 within the KSR2-MEK1 complexe with an IC50 of 120 nM. APS-2-79 makes the stabilization of the KSR inactive state antagonizes oncogenic Ras-MAPK signaling.
    APS-2-79 hydrochloride
  • HY-10999S
    Trametinib-d4
    		Inhibitor 99.87%
    Trametinib-d4 is the deuterium labeled Trametinib. Trametinib (GSK1120212; JTP-74057) is an orally active MEK inhibitor that inhibits MEK1 and MEK2 with IC50s of about 2 nM. Trametinib activates autophagy and induces apoptosis.
    Trametinib-d<sub>4</sub>
  • HY-111368
    EBI-1051
    		Inhibitor
    EBI-1051 is a highly potent and orally efficacious MEK inhibitor with an IC50 of 3.9 nM.
    EBI-1051
  • HY-12031B
    (2Z,3Z)-U0126
    (2Z,3Z)-U0126 is a selective inhibitor of MEK1 and MEK2, demonstrating potent antiinflammatory effects by noncompetitively inhibiting AP-1 transcriptional activity with IC50 values of 72 nM for MEK1 and 58 nM for MEK2. (2Z,3Z)-U0126 also inhibits anchorage-independent growth of Ki-ras-transformed rat fibroblasts by blocking both the extracellular signal-regulated kinase and mammalian target of rapamycin pathways. Additionally, (2Z,3Z)-U0126 can undergo isomerization and cyclization, resulting in various products that show reduced affinity for MEK and diminished AP-1 inhibition compared to the parent compound.
    (2Z,3Z)-U0126
  • HY-N10092
    Saucerneol
    		Inhibitor
    Saucerneol is a lignans that can be isolated from Saururus chinensis. Saucerneol inhibits LPS-induced or Con A-induced lymphocytes proliferation. Saucerneol inhibits mixed lymphocyte response. Saucerneol also inhibits mitogens-induced cytokines secretion.
    Saucerneol
  • HY-RS08035
    Map2k1 Rat Pre-designed siRNA Set A
    		Inhibitor

    Map2k1 Rat Pre-designed siRNA Set A contains three designed siRNAs for Map2k1 gene (Rat), as well as a negative control, a positive control, and a FAM-labeled negative control.
    Map2k1 Rat Pre-designed siRNA Set A
  • HY-143468
    MEK-IN-5
    		Inhibitor
    MEK-IN-5 is a potent MEK inhibitor and NO donor. MEK-IN-5 significantly reduces the levels of pMEK and pERK in a dose-dependent and time-dependent manner. MEK-IN-5 induces apoptosis in MDA-MB-231 cells.
    MEK-IN-5
Cat. No. Product Name / Synonyms Application Reactivity
MEK Isoform Comparison

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