| 1995 |
BMK1/ERK5 is a new mammalian MAP kinase of 816 amino acids with a TEY dual phosphorylation motif (like ERK1/2) but with a distinct C-terminal domain and loop-12 structure, suggesting unique signaling functions. |
Molecular cloning, sequence analysis |
Biochemical and biophysical research communications |
Medium |
7646528
|
| 1996 |
BMK1/ERK5 is a redox-sensitive kinase selectively activated by H2O2 (but not by angiotensin II, phorbol ester, PDGF, or TNF-α) in a calcium-dependent manner in vascular smooth muscle cells, demonstrating activation distinct from ERK1/2. |
Kinase activity assays, pharmacological inhibition, calcium chelation |
The Journal of biological chemistry |
Medium |
8663194
|
| 1998 |
ERK5/BMK1 physically interacts with MEF2 transcription factors (interaction mapped to the MADS/MEF2 domain of MEF2); ERK5 phosphorylates MEF2 in vitro and enhances MEF2 transactivation capacity when co-expressed. |
Yeast two-hybrid, GST pulldown, co-immunoprecipitation, in vitro kinase assay, reporter assay |
Nucleic acids research |
High |
9753748
|
| 1998 |
EGF-mediated activation of BMK1/ERK5 occurs independently of Ras and requires MEK5; expression of dominant-negative BMK1 blocks EGF-induced cell proliferation and prevents S-phase entry, establishing BMK1 as required for EGF-induced cell proliferation. |
Dominant-negative expression, cell cycle analysis, BrdU incorporation |
Nature |
High |
9790194
|
| 1999 |
ERK5 is activated by EGF and NGF downstream of receptor tyrosine kinases via a Ras-dependent pathway; ERK5 phosphorylates the Ets-domain transcription factor Sap1a (but not Elk1) in vitro and in cells, and the ERK5 pathway mediates serum-induced c-Fos expression and serum response element transcription via Sap1a. |
Dominant-negative expression, reporter assay, in vitro kinase assay, phosphatase inhibition |
The Journal of biological chemistry |
High |
10473620
|
| 1999 |
MEKK3 physically interacts with MEK5 (identified by yeast two-hybrid, confirmed by co-immunoprecipitation) and, as a dominant-active form, stimulates BMK1 activity through MEK5; endogenous MEKK3 activity is required for growth factor-mediated BMK1 activation. |
Yeast two-hybrid, co-immunoprecipitation, dominant-active/dominant-negative expression, kinase assay |
The Journal of biological chemistry |
High |
10593883
|
| 1999 |
Fluid shear stress potently activates BMK1/ERK5 in endothelial cells via a mechanism dependent on non-Src tyrosine kinases and intracellular calcium, but not on Src, redox state, NO, PKA, PKC, PKG, CaM kinase, PI3K, or arachidonic acid metabolism. |
Kinase activity assay, pharmacological inhibitors, overexpression of kinase-inactive c-Src, calcium chelation |
The Journal of biological chemistry |
Medium |
9867822
|
| 2000 |
MEKK2 binds MEK5 (identified by yeast two-hybrid), activates BMK1/ERK5 through MEK5, and this activation is cell-type specific (MEKK3 required in Cos7/HEK293; MEKK2 required in D10 T cells); MEKK2 also interacts with the T cell adapter Lad/RIBP and co-localizes at the T cell-APC contact site. |
Yeast two-hybrid, co-immunoprecipitation, dominant-negative expression, kinase assay, co-localization |
The Journal of biological chemistry |
High |
11073940
|
| 2000 |
ERK5 contains a C-terminal transcriptional activation domain (TAD) and a MEF2-interacting domain in its C-terminal half; these domains are required for coactivation of MEF2D, and the MEF2-ERK5 interaction is activation-dependent in vivo and inhibitable by the MEF2 repressor Cabin1. |
Yeast two-hybrid, reporter assay, domain deletion/mutagenesis, promoter activation assays |
Molecular and cellular biology |
High |
11046135
|
| 2000 |
ERK5 and ERK2 cooperate to activate NF-κB and induce cell transformation; the MEK5-ERK5 pathway is sufficient to activate NF-κB and p90 RSK, and ERK5 is required for NF-κB activation by RafBXB. |
Focus formation assay, reporter assay, dominant-negative expression, co-expression |
The Journal of biological chemistry |
Medium |
11118448
|
| 2001 |
The C-terminal domain of ERK5 (containing a nuclear localization signal) is required for MEF2C transcriptional activation via nuclear targeting but not for kinase activation; the N-terminal domain (aa 1-77) mediates cytoplasmic targeting; aa 78-139 is required for MEK5 association; aa 140-406 is necessary for oligomerization. Mouse ERK5 splice variants mERK5b and mERK5c act as dominant-negative inhibitors of ERK5a kinase activity. |
Domain deletion/mutagenesis, kinase assays, reporter assays, subcellular localization (microscopy), co-immunoprecipitation |
The Journal of biological chemistry |
High |
11139578
|
| 2001 |
BMK1 physically interacts with and phosphorylates serum- and glucocorticoid-inducible kinase (SGK) at Ser78 during growth factor stimulation; this BMK1-mediated phosphorylation is necessary for SGK activation and for growth factor-induced cell proliferation. |
Yeast two-hybrid, co-immunoprecipitation, in vitro kinase assay, cell proliferation assay |
The Journal of biological chemistry |
High |
11254654
|
| 2001 |
H2O2-induced BMK1 activation in PC12 cells is mediated by c-Src (blocked by herbimycin A, PP2, and kinase-inactive Src transfection), leading to enhanced MEF2C DNA-binding activity; BMK1 pathway inhibition increases H2O2-induced cell death. |
Kinase activity assay, pharmacological inhibitors, dominant-negative transfection, EMSA, cell viability assay |
The Journal of biological chemistry |
Medium |
11782488
|
| 2001 |
BMK1 is activated via RET tyrosine kinase signaling through phosphotyrosine 1062; GDNF activates BMK1 through RET-Y1062, and MEN2A RET mutation constitutively activates BMK1; this activation is not blocked by PI3K or RAS/MEK1 inhibitors, suggesting a distinct pathway from canonical Ras signaling. |
Site-directed mutagenesis (Y1062F), kinase assay, pharmacological inhibitors, reporter assay |
Biochemical and biophysical research communications |
Medium |
11237712
|
| 2001 |
MKK5/ERK5 pathway activation by EGF occurs after ERK1/2 activation in HeLa cells; the classical MAPK cascade exerts negative feedback control over the MKK5/ERK5 pathway; ERK5 is not a significant activator of MAPK-activated protein kinase-1/RSK in HeLa cells (negative finding). |
Phospho-specific antibodies, pharmacological inhibitors (U0126, PD184352) at different concentrations |
FEBS letters |
Medium |
11478941
|
| 2002 |
BMK1 activation protects endothelial cells from apoptosis; constitutively active MEK5 activates BMK1 and inhibits caspase-3 activity and apoptosis; BMK1 phosphorylates Bad on Ser112 and Ser136 independently of Akt, PKA, or p90RSK; dominant-negative BMK1 stimulates apoptosis and reduces Bad phosphorylation. |
Overexpression of CA-MEK5 and DN-BMK1, MTT assay, caspase-3 assay, phospho-Bad immunoblot, kinase assay |
Circulation research |
High |
14670836
|
| 2003 |
WNK1 activates ERK5 through MEKK2 and MEKK3; WNK1 phosphorylates both MEKK2 and MEKK3 in vitro and activates MEKK3 in cells; MEKK2/MEKK3 co-immunoprecipitate with endogenous WNK1; ERK5 activation by EGF is attenuated by WNK1 siRNA knockdown, placing WNK1 upstream of MEKK2/3 in the ERK5 pathway. |
Co-immunoprecipitation, in vitro kinase assay, dominant-negative expression, siRNA knockdown |
The Journal of biological chemistry |
High |
14681216
|
| 2003 |
MEK5beta (short splice variant) inhibits EGF-induced BMK1 activation and MEK5alpha-induced MEF2 transcriptional activity; MEK5beta co-immunoprecipitates with BMK1 and competitively prevents MEK5alpha-BMK1 association, explaining its dominant-negative behavior. |
Co-immunoprecipitation, kinase assay, reporter assay, overexpression of splice variants |
The Journal of biological chemistry |
Medium |
14583600
|
| 2004 |
Conditional genetic ablation of BMK1 in adult mice leads to lethality with vascular leakage, endothelial cell rounding, misalignment, and apoptosis; endothelial-specific BMK1 KO recapitulates cardiovascular defects; in vitro BMK1 removal causes endothelial death partially via deregulation of the direct substrate MEF2C. Cardiomyocyte-specific BMK1 KO mice develop normally. |
Conditional knockout mice (Mx1-Cre), histology, in vitro siRNA/knockdown, MEF2C reporter assay |
The Journal of clinical investigation |
High |
15085193
|
| 2005 |
BMK1/ERK5 negatively regulates HIF1α by promoting its ubiquitination and proteasomal degradation; constitutively active MEK5 reduces HIF1α protein levels and inhibits HIF1α-driven angiogenesis and EC migration; dominant-negative BMK1 enhances HIF1α activity. |
Reporter assay, immunoblot, ubiquitination inhibitors, overexpression of CA-MEK5 and DN-BMK1, Matrigel angiogenesis assay, EC migration assay |
Circulation research |
Medium |
15879308
|
| 2006 |
ERK5 binds to and phosphorylates p90 RSK in vitro, causing RSK activation; the common docking (CD) domain of ERK5 and the D domain of RSK mediate their association; the large C-terminal domain of ERK5 is not required for RSK binding or activation; activation of ERK5 weakens its binding to RSK suggesting RSK is released upon ERK5 activation. |
Co-immunoprecipitation, in vitro kinase assay, domain deletion analysis |
Archives of biochemistry and biophysics |
Medium |
16626623
|
| 2008 |
ERK5 controls EGF-induced Slug expression and keratinocyte migration; Erk5 pathway inhibition blocks keratinocyte migration and alters desmosome organization; shRNA knockdown of Erk5 reduces motility and Slug induction in response to EGF. |
shRNA knockdown, pharmacological inhibition, wound healing assay, immunofluorescence |
Molecular biology of the cell |
Medium |
18716062
|
| 2008 |
In endothelial cells, MEK5-BMK1 (but not MEK1-ERK1/2) signaling mediates flow-induced inhibition of TNF-α-activated JNK; selective MEK5 inhibitor BIX02188 completely reverses the flow-mediated inhibition of JNK activation. |
Pharmacological inhibitors (PD184352 at selective concentrations, BIX02188), kinase assay |
Biochemical and biophysical research communications |
Medium |
18358237
|
| 2008 |
ERK5/BMK1 is required for optimal CSF-1-induced macrophage proliferation; ERK5 activation by CSF-1 is Src family kinase-dependent; following CSF-1 stimulation, active ERK5 translocates from cytosol to nucleus; ERK5 siRNA reduces c-Jun phosphorylation/expression and increases p27 expression. |
siRNA knockdown, kinase assay, nuclear fractionation, immunoblot, DNA synthesis assay |
Journal of immunology |
Medium |
18322228
|
| 2009 |
Constitutive MEK5/ERK5 activation strongly inhibits endothelial cell migration, increases focal contact number and actin stress fibers, reduces p130Cas expression (a key mediator of directed migration), and decreases focal contact turnover. |
Retroviral gene transfer (CA-MEK5), cell migration assay, immunofluorescence, immunoblot |
The Journal of biological chemistry |
Medium |
19605361
|
| 2009 |
ERK1/2, but not ERK5, is necessary and sufficient for c-Fos phosphorylation and transcriptional activation; c-Fos expression is normal in ERK5−/− cells; however, ERK5−/− cells are defective for c-Jun expression, which is rescued by ERK5 re-expression. |
Conditional kinase activation, selective MEK inhibitors, ERK5-null fibroblasts, reporter assay |
Cellular signalling |
High |
19249353
|
| 2010 |
CDK1 co-precipitates with ERK5 in mitotic cells and its activity is required for ERK5 phosphorylation at multiple C-terminal sites during mitosis (a second MEK5-independent phosphorylation pathway); mitotic C-terminal phosphorylation controls ERK5 nuclear-cytoplasmic shuttling and transcriptional activity. |
Co-immunoprecipitation, CDK1 inhibitor (RO3306), phosphorylation site mapping, subcellular fractionation, reporter assay |
Journal of cell science |
Medium |
20736311
|
| 2010 |
BMK1 interacts with PML isoform IV and phosphorylates PML, inhibiting its tumor-suppressor function and PML-dependent p21 activation; the BMK1 inhibitor XMD8-92 blocks tumor cell proliferation in vitro and inhibits tumor growth in vivo by ~95%. |
Co-immunoprecipitation, in vitro kinase assay, cell proliferation assay, xenograft mouse model |
Cancer cell |
High |
20832753
|
| 2012 |
Activated BMK1 preferentially associates with PML isoform IV and disrupts PML-MDM2 interaction, suppressing p53 activation; BMK1 deactivation combined with doxorubicin synergistically enhances MDM2 nucleolar sequestration and PML-mediated p53 upregulation. |
Co-immunoprecipitation, immunoblot, reporter assay, in vitro and in vivo tumor models |
Oncogene |
Medium |
22869143
|
| 2012 |
BMK1 signaling suppresses EMT: BMK1 elevation augments E-cadherin-mediated cell-cell adhesion and reduces mesenchymal markers, while BMK1 silencing promotes Snail nuclear accumulation via Akt/GSK3β signaling activated through DEPTOR-mediated mTOR inhibition. |
siRNA knockdown, overexpression, immunoblot, cell adhesion/motility assay, in vivo metastasis model |
Cancer research |
Medium |
22282661
|
| 2013 |
X-ray crystal structure of ERK5 (MAPK7) kinase domain in complex with a benzo[e]pyrimido-[5,4-b]diazepine-6(11H)-one inhibitor was determined; specific residue differences in the ATP-binding site distinguish ERK5 from ERK1/2, p38, and JNKs, providing a structural basis for inhibitor selectivity. |
X-ray crystallography |
Journal of medicinal chemistry |
High |
23656407
|
| 2013 |
ERK5 is degraded via the ubiquitin-proteasome system in a process mediated by the tumor suppressor VHL through a prolyl hydroxylation-dependent mechanism; ERK5 knockdown in pVHL-negative cell lines decreases proliferation and migration. |
Transient transfection, siRNA knockdown, immunoblot, proteasome inhibitors |
Neoplasia |
Medium |
23730213
|
| 2014 |
ALK activates ERK5 through a PI3K-AKT-MEKK3-MEK5 pathway; ALK-induced MYCN transcription and neuroblastoma cell proliferation require ERK5; pharmacological or siRNA inhibition of ERK5 suppresses neuroblastoma cell proliferation and enhances the anti-tumor efficacy of the ALK inhibitor crizotinib. |
Pharmacological inhibitors, siRNA knockdown, reporter assay, xenograft models |
Science signaling |
High |
25351247
|
| 2014 |
ERK5 activation in macrophages promotes efferocytosis; macrophage-specific ERK5-null mice show reduced efferocytosis and accelerated atherosclerotic plaque formation on a hypercholesterolemic background. |
Conditional macrophage-specific ERK5 knockout mice, efferocytosis assays, atherosclerosis model |
Circulation |
High |
25001623
|
| 2014 |
ERK5 activation inhibits endothelial cell migration via a KLF2-dependent downregulation of PAK1 mRNA and protein; KLF2 (but not KLF4) knockdown prevents ERK5-mediated PAK1 repression and restores migration capacity. |
Constitutively active MEK5 expression, siRNA knockdown (KLF2, KLF4, PAK1), qRT-PCR, immunoblot, migration assay |
Cardiovascular research |
Medium |
25388666
|
| 2015 |
Pak2 (but not Pak1) signals through the Bmk1/Erk5 pathway to regulate endothelial development and function; endothelial Pak2 depletion causes embryonic lethality and adult vascular permeability; these defects are mediated through the Bmk1/Erk5 pathway. |
Conditional knockout mice, epistasis experiments, in vitro kinase assays |
Molecular and cellular biology |
Medium |
26391956
|
| 2015 |
Phosphorylation of ERK5 at Thr732 by ERK1/2 (downstream of oncogenic Ras or growth factors) promotes ERK5 nuclear localization and MEF2C transcriptional activity, independently of TEY motif phosphorylation; ERK5-T732A mutant remains cytosolic under basal conditions. |
Site-directed mutagenesis (T732A, T732E), pharmacological inhibitors, subcellular fractionation, reporter assay, immunofluorescence |
PloS one |
Medium |
25689862
|
| 2016 |
ERK5 kinase inhibitors paradoxically activate ERK5 transcriptional activity through its C-terminal TAD domain; inhibitor binding to the kinase domain promotes conformational changes that drive nuclear translocation and gene transcription; kinase-active drug-resistant ERK5 mutants confirmed that direct inhibitor binding to the kinase domain is required for paradoxical transcriptional activation. |
Drug-resistant kinase mutants, nuclear localization assay, reporter assay, kinase inhibitor panel |
Nature communications |
High |
32170057
|
| 2016 |
Selective ERK5 kinase inhibitors (lacking bromodomain activity) have no antiinflammatory or antiproliferative activity, while previously reported ERK5 inhibitors derive their efficacy from off-target bromodomain inhibition; ERK5 genetic deletion/depletion phenotypes likely arise from non-catalytic (kinase-independent) functions of ERK5. |
Selective inhibitor synthesis and characterization, KINOMEscan, bromodomain binding assays, cell proliferation assays |
Proceedings of the National Academy of Sciences of the United States of America |
High |
27679845
|
| 2016 |
Loss of Erk1/2 in intestinal epithelial cells results in supraphysiological ERK5 pathway activity; targeting both ERK1/2 and ERK5 more effectively suppresses cell proliferation than targeting either alone in intestinal organoids and CRC lines, demonstrating ERK5 as a bypass route for proliferation upon ERK1/2 abrogation. |
Conditional Erk1/2 knockout mice, intestinal organoids, siRNA, pharmacological inhibitors |
Nature communications |
High |
27187615
|
| 2017 |
YAP promotes myogenic differentiation via the MEK5-ERK5 pathway through a Src/c-Abl/MEKK3 cascade; YAP physically interacts with MEKK3 (via PPGY motif at aa 178-181) and ERK5 as shown by co-immunoprecipitation; MEKK3 Y181F mutation inhibits MEK5/ERK5 activation and myogenic differentiation. |
Co-immunoprecipitation, site-directed mutagenesis, pharmacological inhibitors, Western blot, differentiation assays |
FASEB journal |
Medium |
28356344
|
| 2018 |
Oncogenic BRAF positively regulates ERK5 expression, phosphorylation, and nuclear localization; both ERK5 kinase and transcriptional transactivation activities are enhanced by BRAF; combined inhibition of MEK5 and BRAFV600E is required to decrease nuclear ERK5, which is critical for cell proliferation. |
siRNA knockdown, pharmacological inhibitors, immunofluorescence (nuclear ERK5), colony formation assay, xenograft models |
Oncogene |
Medium |
29483645
|
| 2020 |
ERK5 SUMOylation at Lys6/Lys22 is required for nuclear translocation and cancer cell proliferation; MEK5 activation or Cdc37 overexpression induces SUMO-2 modification of ERK5; SUMO site mutation (K6R/K22R) abolishes nuclear ERK5 localization; SENP2 overexpression abolishes endogenous ERK5 nuclear localization in response to EGF. |
SUMO site mutagenesis, immunofluorescence, immunoblot, cell proliferation assay, SENP2 overexpression |
International journal of molecular sciences |
Medium |
32209980
|
| 2022 |
Shear stress activates PIEZO1, causing calcium influx that activates CaMKII, which interacts with and activates MEKK3 to promote MEKK3/MEK5/ERK5 signaling and ultimately KLF2/4 transcription; endothelial-specific Piezo1 deletion reduces KLF2/4 expression in vivo. |
Conditional endothelial Piezo1 KO mice, co-immunoprecipitation (CaMKII-MEKK3), pharmacological inhibitors, shear stress assays, qRT-PCR |
Cells |
Medium |
35883633
|
| 2023 |
ERK5 S496 phosphorylation mediates senescence-associated secretory phenotype (SASP) and senescence-associated stemness in macrophages by upregulating AHR; ERK5 S496 phosphorylation induces NRF2 SUMOylation at K518, inhibiting NRF2 transcriptional activity without altering ERK5 catalytic activity; S496A knock-in mice are protected from atherosclerosis. |
CRISPR/Cas9 knock-in mouse (S496A), RNA sequencing, imaging mass cytometry, SUMOylation assay, metabolic flux analysis, pharmacological ERK5 inhibitors |
Circulation research |
High |
37264926
|