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-159127
    HRS-4642
    		Inhibitor 98.38%
    HRS-4642 is a high affinity, selective, long-acting, and non-covalent KRASG12D inhibitor with a Kd value of 0.083 nM. HRS-4642 inhibits the binding of KRASG12D to SOS1 or RAF1, thereby blocking the downstream MEK-ERK signaling pathway. HRS-4642 promotes Apoptosis. HRS-4642 alone or combined with Carfilzomib (HY-10455) effectively shapes the tumor microenvironment. HRS-4642 has an anti-cancer effect on pancreatic and colorectal cancers carrying the KRASG12D mutation[1][2][3].
    HRS-4642
  • HY-B0185A
    Lidocaine hydrochloride
    		Inhibitor 99.84%
    Lidocaine hydrochloride (Lignocaine hydrochloride) inhibits sodium channels involving complex voltage and using dependence. Lidocaine hydrochloride 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 hydrochloride is an amide derivative and a agent to treat ventricular arrhythmia and an effective tumor-inhibitor.
    Lidocaine hydrochloride
  • HY-50295
    CI-1040
    		Inhibitor 99.91%
    CI-1040 (PD 184352) is an orally active, highly specific, small-molecule inhibitor of MEK with an IC50 of 17 nM for MEK1.
    CI-1040
  • HY-P0119
    Lixisenatide
    		Inhibitor 99.93%
    Lixisenatide is a glucagon-like peptide-1 (GLP-1) receptor agonist. Lixisenatide inhibits the inflammatory response through down regulation of pro-inflammatory cytokines, and suppresses of the Akt-MEK1/2 signaling pathway. Lixisenatide can inhibit oxidative stress, mitochondrial dysfunction and apoptosis. Lixisenatide can be used for the researches of inflammation, metabolic disease, neurological disease and cardiovascular disease, such as rheumatoid arthritis, diabetes, Alzheimer's disease and atherosclerosis.
    Lixisenatide
  • HY-402361
    TERT activator-1
    		99.91%
    TERT activator-1 is a small molecule activator of telomerase reverse transcriptase (TERT). TERT activator-1 promotes TERT transcription through the MEK/ERK/AP-1 signaling cascade. TERT activator-1 promotes adult neurogenesis and enhances neuromuscular function. TERT activator-1 reduces cellular senescence and systemic inflammation in aged mice, and can be used in the study of aging.
    TERT activator-1
  • HY-12056
    BIX02189
    		Inhibitor 99.72%
    BIX02189 is a potent and selective MEK5 inhibitor with an IC50 of 1.5 nM. BIX02189 also inhibits ERK5 catalytic activity with an IC50 of 59 nM.
    BIX02189
  • HY-132844
    Tunlametinib
    		Inhibitor 99.53%
    Tunlametinib is a highly selective, orally active MEK1/2 inhibitor (IC50=1.9 nM, MEK1). Tunlametinib blocks the RAS-RAF-MEK-ERK signaling pathway, arrests tumor cell cycle and promotes apoptosis. Tunlametinib potently inhibits the proliferation of RAS/RAF mutant cancer cells (such as BRAF V600E, KRAS G12C mutant cells). Tunlametinib shows synergistic anti-tumor effects with BRAF/KRASG12C/SHP2 inhibitors, Docetaxel (HY-B0011). Tunlametinib can be used to study targeted therapy for RAS/RAF mutation-driven malignancies (such as melanoma, colorectal cancer, and non-small cell lung cancer).
    Tunlametinib
  • HY-12042
    Pimasertib
    		Inhibitor 99.60%
    Pimasertib (AS703026) is a highly selective, ATP non-competitive allosteric orally available MEK1/2 inhibitor.
    Pimasertib
  • HY-N0103
    Sophocarpine
    		Inhibitor 99.85%
    Sophocarpine is a PTEN activator and an inhibitor of PI3K/Akt, MEK/ERK, and NF-κB signaling pathways. Sophocarpine upregulates PTEN expression and inhibits PI3K/Akt phosphorylation, arrests tumor cell cycle and induces apoptosis. Sophocarpine inhibits MEK/ERK phosphorylation and VEGF secretion, reducing tumor cell migration. Sophocarpine can also inhibit NF-κB activation and p38 and JNK phosphorylation, reduce the expression of inflammatory factors such as iNOS and COX-2, and activate the Nrf2/HO-1 pathway to reduce oxidative stress. Sophocarpine has anti-tumor, anti-inflammatory, antioxidant and anti-apoptotic effects, and can be used in the research of cancers such as glioblastoma and colorectal cancer, inflammation-related diseases, and Doxorubicin (HY-15142A)-induced cardiac damage.
    Sophocarpine
  • HY-15610
    GDC-0623
    		Inhibitor 98.74%
    GDC-0623 (RG 7421) is a potent, ATP-uncompetitive inhibitor of MEK1 (Ki=0.13 nM, +ATP), and displays 6-fold weaker potency against HCT116 (KRAS (G13D), EC50=42 nM) versus A375 (BRAFV600E, EC50=7 nM).
    GDC-0623
  • HY-153181
    Trametiglue
    		Inhibitor 98.81%
    Trametiglue, a derivative of Trametinib (HY-10999), targets both KSR-MEK and RAF-MEK with unprecedented potency and selectivity via unique interfacial binding interactions.
    Trametiglue
  • HY-153863
    MS934
    		Degrader 98.48%
    MS934 is a novel improved VHL-recruiting MEK 1/2 PROTAC degrader. MS934 also degrades CRAF. MS934 can be used for the research of variety of human cancers, such as melanoma, nonsmall cell lung cancer (NSCLC), colorectal cancer, primary brain tumors, and hepatocellular carcinoma (Pink: Target protein ligand (HY-168288); Black: linker (HY-168289); Blue: E3 ligase ligand (HY-112078)).
    MS934
  • HY-119917
    Gossypetin
    		Inhibitor 99.82%
    Gossypetin is a hexahydroxylated flavonoid and is a potent mitogen-activated protein kinase kinase (MKK)3 and MKK6 inhibitor with strongly attenuates the MKK3/6-p38 signaling pathway, has various pharmacological activities, including antioxidant, antibacterial and anticancer activities.
    Gossypetin
  • HY-50706A
    Selumetinib sulfate
    		Inhibitor 99.58%
    Selumetinib (AZD6244) sulfate is selective, non-ATP-competitive oral MEK1/2 inhibitor, with an IC50 of 14 nM for MEK1. Selumetinib (AZD6244) sulfate inhibits ERK1/2 phosphorylation. Selumetinib sulfate can penetrate the blood brain barrier (BBB).
    Selumetinib sulfate
  • HY-14691
    Refametinib
    		Inhibitor 99.82%
    Refametinib (BAY 869766; RDEA119) is an orally available, potent, non-ATP-competitive, selective, allosteric MEK1/MEK2 inhibitor with IC50s of 19 nM and 47 nM, respectively.
    Refametinib
  • HY-B0185R
    Lidocaine (Standard)
    		Inhibitor
    Lidocaine (Standard) is the analytical standard of Lidocaine. This product is intended for research and analytical applications. Lidocaine (Lignocaine) 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 (Standard)
  • HY-15504
    RGB-286638
    		Inhibitor 99.70%
    RGB-286638 is a CDK inhibitor that inhibits the kinase activity of cyclin T1-CDK9, cyclin B1-CDK1, cyclin E-CDK2, cyclin D1-CDK4, cyclin E-CDK3, and p35-CDK5 with IC50s of 1, 2, 3, 4, 5 and 5 nM, respectively; also inhibits GSK-3β, TAK1, Jak2 and MEK1, with IC50s of 3, 5, 50, and 54 nM.
    RGB-286638
  • HY-B0023
    Azelnidipine
    		Inhibitor 99.79%
    Azelnidipine (CS 905) is a dihydropyridine calcium channel blocker that is effective orally. Azelnidipine inhibits the intracellular calcium ion flow and lower blood pressure by selectively blocking L-type calcium channel on the membrane of vascular smooth muscle. Azelnidipine inhibits esophageal squamous cell carcinoma proliferation by targeting MEK1/2. Azelnidipine also has anti-inflammatory, antioxidant and neuroprotective effects .
    Azelnidipine
  • HY-148907
    CS640
    		Inhibitor 99.48%
    CS640 (Compound 19) is a chemical probe and a calmodulin-dependent kinase inhibitor. CS640 inhibits CaMK1D, CaMK1B, CaMK1A, CaMK1G, MEK5, RIPK4, mLK3 and PIP5K1, with IC50 values of 8, 3, 1, 1, 25 nM, 5.69, 2.75 and 11.2 μM, respectively. CS640 blocks Aβ-induced hyperphosphorylation of tau protein at the Thr181 site, but fails to protect primary mouse cortical neurons from Aβ-induced toxic damage. CS640 is applicable to research related to Alzheimer's disease.
    CS640
  • HY-N6670
    Cefotetan
    		Activator 99.75%
    Cefotetan is a binding agent that targets human Raf1 kinase inhibitor protein (hRKIP). Cefotetan binds to hRKIP, reduces the binding space between hRKIP and Raf1 kinase, relieves hRKIP's inhibition of the Ras/Raf1/MEK/ERK signaling pathway, and enhances ERK phosphorylation. Cefotetan can be used to study diseases associated with dysregulated Ras/Raf1/MEK/ERK signaling pathways. Cefotetan is also a broad-spectrum antibacterial agent that disrupts cell wall synthesis by binding to bacterial penicillin-binding proteins (PBPs). It is used to study bacterial infections such as bone, skin, urinary tract, and lower respiratory tract.
    Cefotetan
Cat. No. Product Name / Synonyms Application Reactivity
MEK Isoform Comparison

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