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


MEK (Mitogen-activated protein kinase kinase, MAPKK) is a kinase enzyme which phosphorylates mitogen-activated protein kinase (MAPK). The activators of p38 (MKK3 and MKK6), JNK (MKK4 and MKK7), and ERK (MEK1 and MEK2) define independent MAP kinase signal transduction pathways. The acronym MEK derives from Mitogen/Extracellular signal-regulated Kinase. MEK is a member of the MAPK signaling cascade that is activated in melanoma. When MEK is inhibited, cell proliferation is blocked and apoptosis (controlled cell death) is induced.

MEK Isoform Specific Products:

  • MEK1

  • MEK2

  • MEK5

  • MEK

MEK Related Products (37):

Cat. No. Product Name Effect Purity
  • HY-12031
    U0126 Inhibitor 98.06%
    U0126 is a potent and non-ATP competitive MEK1 and MEK2 inhibitor, with IC50s of 70 nM and 60 nM, respectively.
  • HY-12028
    PD98059 Inhibitor 99.33%
    PD98059 is a potent, selective and cell-permeable MEK1 and MEK2 inhibitor with IC50s of 4 μM and 50 μM respectively.
  • HY-10999
    Trametinib Inhibitor 99.37%
    Trametinib is a potent MEK inhibitor that inhibits MEK1 and MEK2 with IC50s of about 2 nM. Due to the poor solubility of Trametinib, Trametinib DMSO solvate (Cat. No.: HY-10999A) is recommeded.
  • HY-10254
    PD0325901 Inhibitor 99.95%
    PD0325901 is a selective and cell permeable MEK inhibitor with an IC50 of 0.33 nM.
  • HY-50706
    Selumetinib Inhibitor 99.87%
    Selumetinib is a highly potent MEK inhibitor, with an IC50 of 14 nM against MEK1.
  • HY-114189
    GW284543 Inhibitor
    GW284543 (UNC10225170) is a selective MEK5 inhibitor.
  • HY-111368
    EBI-1051 Inhibitor
    EBI-1051 is a highly potent and orally efficacious MEK inhibitor with an IC50 of 3.9 nM.
  • HY-122404
    Xantocillin Inhibitor
    Xanthocillin is a marine agent extracted from Penicillium commune, induces autophagy through inhibition of the MEK/ERK pathway.
  • HY-10999A
    Trametinib DMSO solvate Inhibitor 99.77%
    Trametinib DMSO solvate is a potent MEK inhibitor that specifically inhibits MEK1/2, with an IC50 value of about 2 nM.
  • HY-13064
    Cobimetinib Inhibitor 99.38%
    Cobimetinib (GDC-0973, RG7420) is a potent, selective and oral MEK1 inhibitor with an IC50 of 4.2 nM for MEK1.
  • HY-15202
    Binimetinib Inhibitor 98.61%
    Binimetinib (MEK162) is an oral and selective MEK1/2 inhibitor with an IC50 of 12 nM.
  • HY-50295
    CI-1040 Inhibitor 98.54%
    CI-1040 (PD184352) is an orally active, highly specific, small-molecule inhibitor of MEK with an IC50 of 17 nM for MEK1.
  • HY-18652
    Ro 5126766 Inhibitor
    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).
  • HY-12042
    Pimasertib Inhibitor 99.32%
    Pimasertib (AS703026) is a highly selective, potent, ATP non-competitive allosteric inhibitor of MEK1/2, used for cancer treatment.
  • HY-15504A
    RGB-286638 free base Inhibitor 99.55%
    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.
  • HY-13449
    TAK-733 Inhibitor 99.81%
    TAK-733 is a potent and selective MEK allosteric site inhibitor with an IC50 of 3.2 nM.
  • HY-12056
    BIX02189 Inhibitor 99.99%
    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.
  • HY-N0776
    Isorhamnetin Inhibitor 98.00%
    Isorhamnetin is a flavonoid compound extracted from the Chinese herb Hippophae rhamnoides L.. Isorhamnetin suppresses skin cancer through direct inhibition of MEK1 and PI3K.
  • HY-15437
    SL327 Inhibitor >98.0%
    SL327 inhibits MEK1 and MEK2, with IC50 values of 180 nM and 220 nM, respectively.
  • HY-12055
    BIX02188 Inhibitor 99.49%
    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.
Isoform Specific Products

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Sorry. There is currently no product that acts on isoform together.

Please try each isoform separately.