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Calyculin A

Inhibitor of PP1 and PP2A
BML-EI192-0025 25 µg 141.00 USD
BML-EI192-0100 100 µg 410.00 USD
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Replaces Prod. #: ALX-350-014

Potent cell permeable inhibitor with high specificity for protein phosphatase 1 (PP1) and 2A (PP2A). Inhibits p130cas tyrosine phosphorylation. Enhances the phosphorylation level of NF-κB. Affects intracellular signalling processes that require 14-3-3. Potent non-phorbol type tumor promoter. Prevents γ-radiation induced apoptosis. Stimulates contraction of smooth muscle, induces intracellular protein phosphorylation in cultured human keratinocytes. Inhibits apoptosis. No effect on acid or alkaline phosphatases at 1µM. Treatment of MCF7 cells (breast cancer line), with 100nM, produced rapid (<20 min.) but incomplete inhibition of both PP1 (~60%) and PP2A (~70%).

Product Specification

Purity:≥98% (HPLC)
Appearance:Clear film or white crystalline powder.
Solubility:Soluble in DMSO, 100% ethanol and dimethyl formamide.
Long Term Storage:-20°C
Use/Stability:Stable for at least 1 year after receipt when stored, as supplied, at -20°C. Stock solutions are stable for up to 3 months at -20°C.
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Product Literature References

Calyculin A induces apoptosis and stimulates phosphorylation of p65NF-kappaB in human osteoblastic osteosarcoma MG63 cells: H. Tanaka, et al.; Int. J. Oncol. 31, 389 (2007), Abstract;
Calyculin A-induced vimentin phosphorylation sequesters 14-3-3 and displaces other 14-3-3 partners in vivo: G. Tzivion, et al.; J. Biol. Chem. 275, 29772 (2000), Abstract;
Unique features of the okadaic acid activity class of tumor promoters: H. Fujiki & M. Suganuma; J. Cancer Res. Clin. Oncol. 125, 150 (1999), Review, Abstract;
Inhibition of p130cas tyrosine phosphorylation by calyculin A: W. Qiu, et al.; J. Leukoc. Biol. 63, 631 (1998), Abstract;
Differential inhibition and posttranslational modification of protein phosphatase 1 and 2A in MCF7 cells treated with calyculin-A, okadaic acid, and tautomycin: B. Favre, et al.; J. Biol. Chem. 272, 13856 (1997), Abstract;
Differential toxicity of the protein phosphatase inhibitors microcystin and calyculin A: M.T. Runnegar, et al.; J. Pharmacol. Exp. Ther. 273, 545 (1995), Abstract;
Calyculin A, a non-phorbol ester type tumor promotor, induced oxidative DNA damage in stimulated human neutrophil-like cells: T. Takeuchi, et al.; BBRC 205, 1803 (1994), Abstract;
Potassium and calcium channel involvement in induction of long-lasting synaptic enhancement by calyculin A, a protein phosphatase inhibitor, in rat hippocampal CA1 region: N. Murakami, et al.; Neurosci. Lett. 176, 181 (1994), Abstract;
Calyculin A, a potent inhibitor of phosphatases-1 and -2A, prevents apoptosis: Q. Song & M.F. Lavin; BBRC 190, 47 (1993), Abstract;
Enhancement of AMPA-mediated synaptic transmission by the protein phosphatase inhibitor calyculin A in rat hippocampal slices: A. Figurov, et al.; Eur. J. Neurosci. 5, 1035 (1993), Abstract;
Comparative effects of protein phosphatase inhibitors (okadaic acid and calyculin A) on human leukemia HL60, HL60/ADR and K562 cells: K. Sakurada, et al.; BBRC 187, 488 (1992), Abstract;
Nonphorbol tumor promoters okadaic acid and calyculin-A induce membrane translocation of protein kinase C: R. Gopalakrishna; BBRC 189, 950 (1992), Abstract;
Calyculin A, an inhibitor of protein phosphatases, a potent tumor promoter on CD-1 mouse skin: M. Suganuma, et al.; Cancer Res. 50, 3521 (1990), Abstract;
Calcium-independent activation of contractile apparatus in smooth muscle by calyculin-A: H. Ishihara, et al.; J. Pharmacol. Exp. Ther. 250, 388 (1989), Abstract;
Calyculin A and okadaic acid: inhibitors of protein phosphatase activity: H. Ishihara, et al.; BBRC 159, 871 (1989), Abstract;
Codon 61 mutations in the c-Harvey-ras gene in mouse skin tumors induced by 7,12-dimethylbenz[a]anthracene plus okadaic acid class tumor promoters: H. Fujiki, et al.; Mol. Carcinog. 2, 184 (1989), Abstract;
Protein phosphatases come of age: P.Cohen & P.T. Cohen; J. Biol. Chem. 264, 21435 (1989), Abstract; Full Text
The structure and regulation of protein phosphatases: P. Cohen; Ann. Rev. Biochem. 58, 453 (1989), Abstract;
Okadaic acid: an additional non-phorbol-12-tetradecanoate-13-acetate- type tumor promoter: M. Suganuma, et al.; PNAS 85, 1768 (1988), Abstract;

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