SRP5047
MEKK1 (664-1512), active, GST tagged human
PRECISIO® Kinase, recombinant, expressed in baculovirus infected Sf9 cells, ≥70% (SDS-PAGE), buffered aqueous glycerol solution
Synonym(s):
MAP3K1, MAPKKK1, MEKK
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About This Item
UNSPSC Code:
12352200
NACRES:
NA.32
recombinant
expressed in baculovirus infected Sf9 cells
product line
PRECISIO® Kinase
Assay
≥70% (SDS-PAGE)
form
buffered aqueous glycerol solution
specific activity
697-943 nmol/min·mg
mol wt
~155 kDa
NCBI accession no.
shipped in
dry ice
storage temp.
−70°C
Gene Information
human ... Map3K1(4214)
General description
MEKK1 or MEK kinase, is a serine/threonine kinase that is downstream of mitogenic and metabolic stimuli, including insulin and many growth factors. MEKK1 functions not only as an upstream activator of ERK and JNK through its kinase domain, but also as an E3 ligase through its PHD domain, providing a negative regulatory mechanism for decreasing ERK1/ERK2 activity by ubiquitination and degradation. MEKK1 -/- embryonic stem cells from mice show loss or altered responses of JNK to microtubule disruption and cold stress. Furthermore, activation of JNK is lost and that of ERK is diminished in response to hyperosmolarity and serum factors in MEKK1 -/- cells.
Physical form
Supplied in 50mM Tris-HCl, pH 7.5, 150mM NaCl, 10mM glutathione, 0.1mM EDTA, 0.25mM DTT, 0.1mM PMSF, 25% glycerol.
Preparation Note
after opening, aliquot into smaller quantities and store at -70 °C. Avoid repeating handling and multiple freeze/thaw cycles
Legal Information
PRECISIO is a registered trademark of Merck KGaA, Darmstadt, Germany
WGK
WGK 1
Regulatory Information
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T Yujiri et al.
Science (New York, N.Y.), 282(5395), 1911-1914 (1998-12-04)
Targeted disruption of the gene encoding MEK kinase 1 (MEKK1), a mitogen-activated protein kinase (MAPK) kinase kinase, defined its function in the regulation of MAPK pathways and cell survival. MEKK1(-/-) embryonic stem cells from mice had lost or altered responses
Zhimin Lu et al.
Molecular cell, 9(5), 945-956 (2002-06-07)
ERK1/2 MAP kinases are important regulators in cellular signaling, whose activity is normally reversibly regulated by threonine-tyrosine phosphorylation. In contrast, we have found that stress-induced ERK1/2 activity is downregulated by ubiquitin/proteasome-mediated degradation of ERK1/2. The PHD domain of MEKK1, a
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