Merck, 371962-1MG, H-89, Dihydrochloride

General description
A solution of H-89, Dihydrochloride (Cat. No. 371963) in anhydrous DMSO. H-89 is a cell-permeable selective and potent inhibitor of protein kinase A (Ki = 48 nM). Inhibits other kinases at several fold higher concentrations: myosin light chain kinase (Ki = 28.3 µM), Ca²⁺/calmodulin-dependent protein kinase II (Ki = 29.7 µM), protein kinase C (Ki = 31.7 µM), casein kinase I (Ki = 38.3 µM), and Rho Kinase II (IC₅₀ = 270 nM). May be used to discriminate between the effects of PKA and cAMP-regulated guanine-nucleotide-exchange factors (GEFs), such as GEFI or Epac (exchange protein directly activated by cAMP) and GEFII. Reported to induce neurite formation in NG 108-15 cells (~1 µM) by blocking the action of Rho kinase II.
Biochem/physiol Actions
Cell permeable: no
Primary Target
PKA
Product does not compete with ATP.
Reversible: no
Target Ki: 48 nM against protein kinase A
Packaging
Packaged under inert gas
Physical form
A 10 mM (1 mg/193 µl) solution of H-89, 2HCl (Cat. No. 371963) in DMSO.
Preparation Note
Following initial thaw, aliquot and freeze (-20°C).
Other Notes
Leemhuis, J., et al. 2002. J. Pharmacol. Exp. Ther.300, 1000.
Davies, S.P. et al. 2000. Biochem. J.351, 95.
de Rooij, J., et al. 1998. Nature.396, 474.
Kawasaki, H., et al. 1998. Science.282, 2275.
Findik, D., et al. 1995. J. Cell. Biochem.57, 12.
Hidaka, H., and Kobayashi, R. 1992. Annu. Rev. Pharmacol. Toxicol.32, 377.
Geilen, C.C., et al. 1992. FEBS Lett.309, 381.
Chijiwa, T., et al. 1990. J. Biol. Chem.265, 5267.
Combest, W.L., et al. 1988. J. Neurochem.51, 1581.
Legal Information
CALBIOCHEM is a registered trademark of Merck KGaA, Darmstadt, Germany
Disclaimer
Toxicity: Irritant (B)