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K252a #12754

Inquiry Info. # 12754

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    Product Information

    Product Usage Information

    K252a is supplied as a lyophilized powder. For a 1 mM stock, reconstitute the 100 μg in 213.9 µl DMSO. Working concentrations and length of treatment can vary depending on the desired effect, but it is typically used as a pretreatment at 0.1-1 µM for 0.5-1 hr prior to treating with a stimulator. Soluble in DMSO at 100 mg/ml; poorly soluble in ethanol.

    Storage

    Store lyophilized or in solution at -20ºC, desiccated. Protect from light. In lyophilized form, the chemical is stable for 24 months. Once in solution, use within 3 months to prevent loss of potency. Aliquot to avoid multiple freeze/thaw cycles.

    Product Description

    Molecular Weight 467.47 g/mol
    Purity >99%
    Molecular Formula C27H21N3O5
    CAS 99533-80-9
    Solubility Soluble in DMSO at 100mg/ml.

    Background

    Originally isolated from the soil fungi Nocardiopisis sp., K252a is a staurosporine analog that inhibits various protein kinases through competition with the ATP binding site (1,2). K252a is a reversible cell-permeable, potent inhibitor of phosphorylase kinase (IC50 = 1.7 nM), protein kinase A (PKA) (IC50 = 140 nM), and protein kinase C (PKC) (IC50 = 470 nM) (3,4). K252a is also known to inhibit protein kinase G and CaM kinase II (5,6). K252a inhibits nerve growth factor induced Trk activation (IC50 = 3 nM), as well as downstream signaling (5,7,8). K252a is reported to induce apoptosis and cell cycle arrest through cdc25 and cdc2 inhibition (9).
    For Research Use Only. Not For Use In Diagnostic Procedures.
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