Cat#:RP-4487H;Product Name:Recombinant Human MEK1 Protein;Synonym:MEK1, MKK1, MAPKK1, MAP2K1, Dual specificity mitogen-activated protein kinase kinase 1, MAP kinase kinase 1, EC 2.7.12.2, ERK activator kinase 1, MAPK/ERK kinase 1, PRKMK1.;Description:MAP2K1 active Protein produced in Sf9 cells is a glycosylated, polypeptide chain containing amino acids 2-393 having a molecular mass of 47 kDa. MAP2K1 is fused to a polyhistidine tag and is purified by proprietary chromatographic techniques.;Source:Sf9 Insect Cells.;Purity:Greater than 90% as determined by SDS-PAGE.;Bioactivity:~125-175 units/mg. One unit of MEK1 activity transfers 1 nmol of phosphate to ERK1/2 peptide per minute at 30°C in a reaction containing 100µM ATP. Recombinant active MEK1 also phosphorylates ERK1, ERK2, and GSK-3?. Kinase activity may vary depending on t;Formulation:MEK1 is supplied at a concentration of in 40mM Tris, pH-8, 0.15M NaCl, 0.27M sucrose, 1mM DTT, 0.2mM PMSF, 1mM benzamidine, 0.1mM sodium vanadate and 0.03% Brij-35.;Stability:Recombinant Proteins are stable for up to 1 year from date of receipt at -70℃;