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-10999
    Trametinib
    		Inhibitor 99.96%
    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
  • HY-10254
    Mirdametinib
    		Inhibitor 99.95%
    Mirdametinib (PD0325901) is an orally active, selective and non-ATP-competitive MEK inhibitor with an IC50 of 0.33 nM. Mirdametinib exhibits a Kiapp of 1 nM against activated MEK1 and MEK2. Mirdametinib suppresses the expression of p-ERK1/2 and induces apoptosis. Mirdametinib has anti-cancer activity for a broad spectrum of human tumor xenografts.
    Mirdametinib
  • HY-12028
    PD98059
    		Inhibitor 99.96%
    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
  • HY-12031
    U0126-EtOH
    		Inhibitor 99.41%
    U0126 (U0126-EtOH) is a potent, non-ATP competitive and selective MEK1 and MEK2 inhibitor, with IC50s of 72 nM and 58 nM, respectively. U0126 is an autophagy and mitophagy inhibitor.
    U0126-EtOH
  • HY-50706
    Selumetinib
    		Inhibitor 99.87%
    Selumetinib (AZD6244) is selective, non-ATP-competitive oral MEK1/2 inhibitor, with an IC50 of 14 nM for MEK1. Selumetinib (AZD6244) inhibits ERK1/2 phosphorylation.
    Selumetinib
  • HY-142042
    3-Hydroxy-4-carboxyalkylamidino-5-arylamino-isothiazoles
    		Inhibitor 99.84%
    3-Hydroxy-4-carboxyalkylamidino-5-arylamino-isothiazoles is an inhibitor for bone morphogenetic protein 2 (BMP2) with an IC50 of 2.2 μM. 3-Hydroxy-4-carboxyalkylamidino-5-arylamino-isothiazoles is inhibitor for mitogen-activated protein kinase 1 (MEK1). 3-Hydroxy-4-carboxyalkylamidino-5-arylamino-isothiazoles exhibits anti-inflammatory and neuroprotective activity in EAE mouse model.
    3-Hydroxy-4-carboxyalkylamidino-5-arylamino-isothiazoles
  • HY-18652A
    Avutometinib potassium
    		Inhibitor
    Avutometinib (CH5126766) (potassium) is a RAF/MEK clamp that potently inhibits RAF/MEK kinase activity and induces dominant negative RAF-MEK complexes preventing phosphorylation of MEK by ARAF, BRAF and CRAF. Avutometinib (potassium) shows anti-proliferative potency across tumor cell lines carrying KRAS mutations including PDAC cell lines. Avutometinib (potassium) induces tumor inhibition and increases survival in a KRAS/p53 pancreatic cancer mouse model. Avutometinib (potassium) is promising for research of low-grade-serous-ovarian-carcinoma (LGSOC), ovarian cancer and pancreatic ductal adenocarcinoma (PDAC).
    Avutometinib potassium
  • HY-159846
    Luvometinib
    		Inhibitor
    Luvometinib is a mitogen-activated protein kinase (MEK) inhibitor with antitumor activity.
    Luvometinib
  • HY-12031A
    U0126
    		Inhibitor 98.45%
    U0126 is a potent, non-ATP competitive and selective MEK1 and MEK2 inhibitor, with IC50s of 72 nM and 58 nM, respectively. U0126 is an autophagy and mitophagy inhibitor.
    U0126
  • HY-13064
    Cobimetinib
    		Inhibitor 99.73%
    Cobimetinib (GDC-0973, RG7420) is a potent, selective and oral MEK1 inhibitor with an IC50 of 4.2 nM for MEK1.
    Cobimetinib
  • HY-15202
    Binimetinib
    		Inhibitor 99.50%
    Binimetinib (MEK162) is an oral and selective MEK1/2 inhibitor. Binimetinib (MEK162) inhibits MEK with an IC50 of 12 nM.
    Binimetinib
  • HY-108635
    C16-PAF
    		Activator 99.85%
    C16-PAF (PAF (C16)), a phospholipid mediator, is a platelet-activating factor and ligand for PAF G-protein-coupled receptor (PAFR). C16-PAF exhibits anti-apoptotic effect and inhibits caspase-dependent death by activating the PAFR. C16-PAF is a potent MAPK and MEK/ERK activator. C16-PAF induces increased vascular permeability.
    C16-PAF
  • HY-N0776
    Isorhamnetin
    		Inhibitor 99.94%
    Isorhamnetin is a flavonoid compound extracted from the Chinese herb Hippophae rhamnoides L.. Isorhamnetin suppresses skin cancer through direct inhibition of MEK1 and PI3K.
    Isorhamnetin
  • HY-18652
    Avutometinib
    		Inhibitor 99.02%
    Avutometinib (Ro 5126766) is a first-in-class dual MEK/RAF inhibitor that allosterically inhibits BRAFV600E, CRAF, MEK, and BRAF (IC50: 8.2, 56, 160 nM, and 190 nM, respectively).
    Avutometinib
  • HY-10999A
    Trametinib (DMSO solvate)
    		Inhibitor 99.65%
    Trametinib (DMSO solvate) (GSK-1120212 (DMSO solvate);JTP-74057 (DMSO solvate)) is an orally active MEK inhibitor that inhibits MEK1 and MEK2 with IC50s of about 2 nM. Trametinib (DMSO solvate) activates autophagy and induces apoptosis.
    Trametinib (DMSO solvate)
  • HY-B0185
    Lidocaine
    		Inhibitor 99.96%
    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
  • HY-19700
    trans-Zeatin
    		Inhibitor 99.83%
    trans-Zeatin is a plant cytokinin, which plays an important role in cell growth, differentiation, and division; trans-Zeatin also inhibits UV-induced MEK/ERK activation.
    trans-Zeatin
  • HY-50295
    CI-1040
    		Inhibitor 99.90%
    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-12042
    Pimasertib
    		Inhibitor 99.88%
    Pimasertib (AS703026) is a highly selective, ATP non-competitive allosteric orally available MEK1/2 inhibitor.
    Pimasertib
  • HY-158115
    NST-628
    		Inhibitor 98.61%
    NST-628 is a brain-permeable MAPK pathway molecule glue that inhibits RAF phosphorylation and MEK activation. NST-628 also binds RAF and prevents the formation of BRAF-CRAF and BRAF-ARAF heterodimers, effectively inhibiting the RAS-MAPK pathway. NST-628 inhibits RAS- and RAF-driven cancers and demonstrated potent inhibition in mutant KRAS, NRAS, BRAF class II/III, and NF1-mutant tumors.
    NST-628
Cat. No. Product Name / Synonyms Application Reactivity
MEK Isoform Comparison

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