Extracellular signal-related protein kinase 5 ERK5 Small Molecule (Collaborative Toolkit)

An inhibitor of extracellular signal-related protein kinase 5 (ERK5)

Contributors

Inventor
Steve Wedge
Cat. #: 153356
Tool sub type: Inhibitor
Purpose: Inhibitor
Product description: An inhibitor of extracellular signal-related protein kinase 5 (ERK5). Mitogen/extracellular signal regulated kinase kinase-5 (MEK5) specifically activates ERK5, also known as Big MAP kinase 1 (BMK1). The MEK5/ERK5 pathway is activated by EGF and is required for EGF-induced proliferation and connexin 43 gap junction communication in certain cellular contexts. ERK5 is comprised of 815 amino acids with a unique C-terminal tail containing a myocyte enhancer factor 2 (MEF2)-interacting domain and a potent transcriptional activation domain. ERK5 regulates several transcriptional factors such as MEF2C, c-Fos, Fra-1, Sap-1, cMyc and NFÎşB. ERK5 activation has a potential role in tumorigenesis and is implicated in breast, prostate and hepatic cancer. ERK5 also plays a key role in embryogenesis; ERK5 knock-out embryos die between day 9.5 and 11.5 due to a loss of vascular integrity.
Additional notes: Tested in vitro and in vivo.
Molecular weight: A potent inhibitor of ERK5 in enzyme (IC50 = 79 nM) and whole cell (IC50 =970 nM) assays.
Selectivity: Tested in the DiscoveRx panel of 456 kinases at a concentration of 10 ÎźM. Seventeen kinases were inhibited by >99% at this concentration, including ERK5, and the S(35) selectivity score ((number of non-mutant kinases with % of control <35)/(number of non-mutant kinases tested)) was 0.205. Ten representative kinases were selected for Kd determinations and the three most sensitive kinases were CSF1R (46nM), DCAMKL1 (61 nM) and ERK5 (180 nM).
Primary target: ERK5
Solubility: 100ÎźM

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