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-14719
    RO4987655
    		Inhibitor 99.01%
    RO4987655 is an orally active and highly selective MEK inhibitor with an IC50 of 5.2 nM for inhibition of MEK1/MEK2.
    RO4987655
  • HY-145702
    MAP855
    		Inhibitor 98.48%
    MAP855 is a highly potent, selective, ATP-competitive and orally active MEK1/2 kinase inhibitor (MEK1 ERK2 cascade IC50=3 nM, pERK EC50=5 nM). MAP855 shows equipotent inhibition of wild-type and mutant MEK1/2.
    MAP855
  • HY-148907
    CS640
    		Inhibitor 99.43%
    CS640 is a selective inhibitor of calmodulin-dependent kinases. CS640 inhibits CaMK1D, CaMK1B, CaMK1A, CaMK1G, PIP5K1C, MEK5, RIPK4 and MLK3 with IC50 values of 0.08, 0.03, 0.001, 0.001, 11.2, 0.025, 5.69 and 2.75 μM, respectively. CS640 also shows inhibitory effects to CYP450 2C9 and CYP450 2C19 with IC50 values of 6 and 10 μM, respectively.
    CS640
  • HY-18620
    DZ2002
    		Inhibitor 99.68%
    DZ2002 is an orally active, reversible and low-cytotoxic type III SAHH inhibitor (Ki=17.9 nM), with good immunosuppressive activity. DZ2002 prevents the development of experimental dermal fibrosis by reversing the profibrotic phenotype of various cell types. DZ2002 can be used in studies of autoimmune diseases such as lupus syndrome and systemic sclerosis.
    DZ2002
  • HY-18955
    BI-847325
    		Inhibitor 98.15%
    BI-847325 is an ATP competitive dual inhibitor of MEK and aurora kinases (AK) with IC50 values of 4 and 15 nM for human MEK2 and AK-C, respectively. BI-847325 is a click chemistry reagent, it contains an Alkyne group and can undergo copper-catalyzed azide-alkyne cycloaddition (CuAAc) with molecules containing Azide groups.
    BI-847325
  • HY-12055
    BIX02188
    		Inhibitor 99.85%
    BIX02188 is a potent MEK5-selective inhibitor with an IC50 of 4.3 nM. BIX02188 inhibits ERK5 catalytic activity, with an IC50 of 810 nM.
    BIX02188
  • HY-12062
    PD318088
    		Inhibitor 99.91%
    PD318088 is a potent, allosteric and non-ATP competitive MEK1/2 inhibitor, an analog of PD184352 (HY-50295). PD318088 binds simultaneously with ATP in a region of the MEK1 active site that is adjacent to the ATP-binding site. PD318088 can be used for cancer research.
    PD318088
  • HY-114189
    GW284543
    		Inhibitor 99.94%
    GW284543 (UNC10225170) is a selective MEK5 inhibitor. GW284543 reduces pERK5, and decreases endogenous MYC protein.
    GW284543
  • HY-139558
    Zapnometinib
    		Inhibitor 99.85%
    Zapnometinib (PD0184264), an active metabolite of CI-1040, is a MEK inhibitor, with an IC50 of 5.7 nM. Zapnometinib exhibits antiviral activity against influenza virus and antibacterial activities.
    Zapnometinib
  • HY-N0103A
    Sophocarpine monohydrate
    		Inhibitor 99.91%
    Sophocarpine monohydrate is a PTEN activator and an inhibitor of PI3K/Akt, MEK/ERK, and NF-κB signaling pathways. Sophocarpine monohydrate upregulates PTEN expression and inhibits PI3K/Akt phosphorylation, arrests tumor cell cycle and induces apoptosis. Sophocarpine monohydrate inhibits MEK/ERK phosphorylation and VEGF secretion, reducing tumor cell migration. Sophocarpine monohydrate 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 monohydrate 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 monohydrate
  • HY-B0185B
    Lidocaine hydrochloride hydrate
    		Inhibitor 99.90%
    Lidocaine (Lignocaine) hydrochloride hydrate inhibits sodium channels involving complex voltage and using dependence. Lidocaine hydrochloride hydrate 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 hydrate is an amide derivative and has potential for the research of ventricular arrhythmia.
    Lidocaine hydrochloride hydrate
  • HY-N0911
    Rehmannioside A
    		Inhibitor 99.96%
    Rehmannioside A is a compound that can be isolated from Rehmanniae radix. Rehmannioside A is an inhibitor of CYP3A4, 2C9 and 2D6, with IC50 values of 10.08, 12.62 and 16.43 μM, respectively. Rehmannioside A has anti-inflammatory, antioxidant, anti-apoptosis, anti-ferroptosis, cognitive improvement and neuroprotective activities. Rehmannioside A can be used for the research of nervous system and inflammation-related diseases.
    Rehmannioside A
  • 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
  • HY-13064A
    Cobimetinib hemifumarate
    		Inhibitor 99.73%
    Cobimetinib hemifumarate is a novel selective MEK1 inhibitor, and the IC50 value against MEK1 is 4.2 nM.
    Cobimetinib hemifumarate
  • HY-13078
    Cobimetinib racemate
    		Inhibitor 99.71%
    Cobimetinib racemate (GDC-0973 racemate; XL518 racemate) is the racemate of Cobimetinib. Cobimetinib is a potent and selective MEK inhibitor.
    Cobimetinib racemate
  • HY-15504A
    RGB-286638 free base
    		Inhibitor 98.07%
    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 free base
  • HY-107620
    PD 198306
    		Inhibitor 99.75%
    PD 198306 is a selective MAPK/ERK-kinase (MEK) inhibitor. PD 198306 results in an observable reduction in the Streptozocin induced increase in the level of active ERK1 and 2. Antihyperalgesic effects.
    PD 198306
  • HY-148507
    GSK1790627
    		Inhibitor 98.81%
    GSK1790627 is the N-deacetylated metabolite of Trametinib (HY-10999). Trametinib is an orally active MEK inhibitor, and activates autophagy and induces apoptosis.
    GSK1790627
  • HY-10174
    PD184161
    		Inhibitor 98.08%
    PD184161 is an orally active MEK inhibitor. PD184161 inhibits MEK activity (IC50=10-100 nM) in a time- and concentration-dependent manner. PD184161 inhibits cell proliferation and induces apoptosis. PD184161 produces depressive-like behavior.
    PD184161
  • HY-16446
    SAR125844
    		98.17%
    SAR125844 is a potent, selective, and ATP-competitive MET kinase inhibitor with the value of IC50 is 4.2 nM and Ki is 2.8 nM. SAR125844 has antitumor activity and can be used for the research of cancer.
    SAR125844
Cat. No. Product Name / Synonyms Application Reactivity
MEK Isoform Comparison

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