A. Western blot analysis on A431 cell lysates using anti-Phospho-MEK1 (pT286) RabMAb (Cat. #AJ1468c), 1:2000 dilution. Cells were either (A) untreated (B) treated with nocodazole
Dual specificity protein kinase which acts as an essential component of the MAP kinase signal transduction pathway Binding of extracellular ligands such as growth factors, cytokines and hormones to their cell-surface receptors activates RAS and this initiates RAF1 activation. RAF1 then further activates the dual-specificity protein kinases MAP2K1/MEK1 and MAP2K2/MEK2. Both MAP2K1/MEK1 and MAP2K2/MEK2 function specifically in the MAPK/ERK cascade, and catalyze the concomitant phosphorylation of a threonine and a tyrosine residue in a Thr-Glu-Tyr sequence located in the extracellular signal-regulated kinases MAPK3/ERK1 and MAPK1/ERK2, leading to their activation and further transduction of the signal within the MAPK/ERK cascade. Depending on the cellular context, this pathway mediates diverse biological functions such as cell growth, adhesion, survival and differentiation, predominantly through the regulation of transcription, metabolism and cytoskeletal rearrangements. One target of the MAPK/ERK cascade is peroxisome proliferator- activated receptor gamma (PPARG), a nuclear receptor that promotes differentiation and apoptosis. MAP2K1/MEK1 has been shown to export PPARG from the nucleus. The MAPK/ERK cascade is also involved in the regulation of endosomal dynamics, including lysosome processing and endosome cycling through the perinuclear recycling compartment (PNRC), as well as in the fragmentation of the Golgi apparatus during mitosis
Tissue Specificity
Widely expressed, with extremely low levels in brain
Cellular Localization
Cytoplasm, cytoskeleton, centrosome. Cytoplasm, cytoskeleton, spindle pole body. Cytoplasm. Nucleus Note=Localizes at centrosomes during prometaphase, midzone during anaphase and midbody during telophase/cytokinesis
A. Western blot analysis on A431 cell lysates using anti-Phospho-MEK1 (pT286) RabMAb (Cat. #AJ1468c), 1:2000 dilution. Cells were either (A) untreated (B) treated with nocodazole
Application Notes
WB:1:2000
Additional Information
Form
Liquid
Storage Instructions
For short-term storage, store at 4° C. For long-term storage, aliquot and store at -20ºC or below. Avoid multiple freeze-thaw cycles.
Storage Buffer
50 mM Tris-Glycine (pH 7.4), 0.15 M NaCl, 40% Glycerol, 0.01% sodium azide and 0.05% BSA.