BUY SB 203580

MA10/PK Homolog - p38 Inhibitor
SB203580 is highly selective and cell permeable pyridinyl imidazole that inhibits the activity of MAP kinase homologs - p38 (stress-activated protein kinase II/HOG1) and p54 (stress-activated protein kinase I/c-Jun N-terminal kinase) with IC₅₀ values of 50 and 500 nM for p38/SA10/PK2a and p38/SA10/PK2b respectively. SB203580 also inhibits the phosphorylation and activation of protein kinase B (10/PKB, also known as Akt) by inhibiting the 10/PKB kinase, phosphoinositide-dependent�protein kinase 1 (IC₅₀ 3-5 μM). Protein Kinase Inhibitors and Activators; MA10/PK and MA10/PK Homolog Inhibitors