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Description

A cell-permeable Kaempferol (Cat. No. 420345) glycoside that targets the the N-terminal kinase domain of p90 ribosomal S6 kinase and inhibits RSK kinase activity (IC50 = 89 nM with 10 µ,M ATP) in a selective, reversible, and ATP-competitive (Ki = 1 µ,M) manner. Shown to inhibit the proliferation of MCF-7, but not the normal breast cell line MCF-10A, and specifically block PDB-induced cellular phosphorylation of RSK substrate p140, but not that of RSK or RSK upstream kinases even at concentrations as high as 100 µ,M., A cell-permeable Kaempferol (Cat. No. 420345) glycoside that targets the the N-terminal kinase domain of p90 ribosomal S6 kinase and inhibits RSK kinase activity (IC50 = 89 nM with 10 µ,M ATP) in a selective, reversible, and ATP-competitive (Ki = 1 µ,M) manner. Shown to inhibit the proliferation of MCF-7, but not the normal breast cell line MCF-10A, and specifically block PDB-induced cellular phosphorylation of RSK substrate p140, but not that of RSK or RSK upstream kinases even at concentrations as high as 100 µ,M. Also available as a 10 mM solution in DMSO (Cat. No. 559292).