Fostriecin, Sodium Salt, Streptomyces pulveraceous - CAS 87860-39-7 - Calbiochem

An antitumor antibiotic that acts as a potent protein phosphatase 2A (PP2A) inhibitor (IC₅₀ = 3.2 nM). Inhibits protein phosphatase 1 (PP1) at much higher concentrations (IC₅₀ = 131 µM). Does not affect the activity of protein phosphatase 2B (PP2B). Inhibits the catalytic activity of DNA topoisomerase II (topo II) and arrests cell growth at the G₂/M phase of the cell cycle in a dose-dependent manner.

Antitumor antibiotic that acts as a potent protein phosphatase 2A (PP2A) inhibitor (IC₅₀ = 3.2 nM). Also inhibits protein phosphatase 1 (PP1) at higher concentrations (IC₅₀ = 131 µM), but has no effect on protein phosphatase 2B (PP2B). Inhibits the catalytic activity of DNA topoisomerase II (topo II) and arrests cell growth at the G2/M phase of the cell cycle in a dose-dependent manner.

Cell permeable: no

Primary Target
PP2a

Product does not compete with ATP.

Reversible: no

Target IC₅₀: 3.2 nM, 131 µM, against protein phosphatase 2A (PP2A), protein phosphatase 1 (PP1), respectively

Packaged under inert gas

Following reconstitution, aliquot and freeze (-20°C). Stock solutions are stable for up to 2 months at -20°C.

Cheng, A., et al. 1998. Cancer Res. 58, 3611.
Walsh, A.H., et al. 1997. FEBS Lett. 416, 230.
Boritzki, T.J., et al. 1988. Biochem. Pharmacol. 37, 4063.

CALBIOCHEM is a registered trademark of Merck KGaA, Darmstadt, Germany

Toxicity: Standard Handling (A)