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Enzo Life Sciences SB203580 (5mg). CAS: 152121-47-6
Supplier: Enzo Life Sciences BMLEI2860005
Cell permeable, specific inhibitor of p38 (SAPK2a). Inhibits p38 MAPK stimulation of MAPKAPK2 (IC50=70nM). Can inhibit the key cell cycle event of retinoblastoma protein phosphorylation in interleukin-2-stimulated T cells. Studies on the proximal regulator of this event, the PI(3)K (phosphoinositide 3-kinase)/Akt (protein kinase B; PKB) pathway, showed that SB203580 blocks the phosphorylation and activation of Akt by inhibiting the Akt kinase, phosphoinositide-dependent protein kinase 1 (PDK1). The concentrations of SB203580 required to block Akt phosphorylation (IC50= 3-5µM) are only approximately 10-fold higher than those required to inhibit p38 MAP kinase (IC50=0.3-0.5µM). These data define a new activity for this drug and suggest that extreme caution should be used when interpreting data when SB203580 has been used at concentrations above 1-2µM. Purity: ≥97% (HPLC). Solubility: Soluble in DMSO (50mg/ml). Long Term Storage: -20°C.
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