K-252a, Nocardiopsis sp.

A cell-permeable protein kinase inhibitor that inhibits CaM kinase II (K_i = 1.8 nM), myosin light chain kinase (K_i = 17 nM), protein kinase A (K_i = 18 nM), protein kinase C (K_i = 25 nM), and protein kinase G (K_i = 20 nM). Also acts as a potent inhibitor (IC₅₀ = 3 nM) of the tyrosine protein kinase activity of the NGF receptor gp 140trk, the product of the trk protooncogene. Also inhibits the kinase activity of its transforming alleles, the trk oncogenes, and of the related neurotrophin receptors gp 145trkB and gp 145trkC. Induces apoptosis and cell cycle arrest by inhibiting Cdc2 and Cdc25c.

Cell permeable: yes

Primary Target
CaM kinase II

Product competes with ATP.

Reversible: yes

Target K_i: 1.8 nM, 20 nM, 18 nM, 25 nM, 20 nM, 3 nM, against CaM kinase II, myosin light chain kinase, protein kinase A, protein kinase C, protein kinase G, NGF receptor gp140trk, respectively

Packaged under inert gas

Toxicity: Irritant (B)

A 1 mM (100 µg/214 µl) solution of K-252a (Cat. No. 420298) in DMSO.

Following initial thaw aliquot and freeze at (-20°C). Store under an inert atmosphere.

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