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Phosphatase Inhibitor Cocktail 3 (100X in DMSO)
For serine/threonine protein phosphatases and L-isozymes of alkaline phosphatases.

Catalog No.K1014
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Sample solution is provided at 25 µL, 10mM.

Product Citations

1. Alpsoy A, Dykhuizen EC. "Glioma tumor suppressor candidate region gene 1 (GLTSCR1) and its paralog GLTSCR1-like form SWI/SNF chromatin remodeling subcomplexes." J Biol Chem. 2018 Mar 16;293(11):3892-3903. PMID:29374058

Quality Control

Quality Control & DataSheet

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Related Biological Data



Thaw at room temperature, add at 1:100 (v/v) dilution to solution samples (such as cell lysates or tissue extracts) before assaying.

Applications: WB, Co-IP, pull-down, IF, IHC, kinase assay and etc.

Components and storage

Catalog No. Product Name Summary Targets CAS Number Smiles
N1686 Cantharidin Inhibitor of protein phosphatases 1/2A Nature Products 56-25-7 O=C([[email protected]@]1(C([H])([H])[H])[[email protected]]2(C([H])([H])[H])[[email protected]@]3([H])O[[email protected]]1([H])C([H])([H])C3([H])[H])OC2=O
B4750 (-)-p-Bromotetramisole Oxalate ALP inhibitor, potent and non-specific Others|Others 62284-79-1 BrC(C=C1)=CC=C1[[email protected]]2N=C3SCCN3C2.OC(C(O)=O)=O
A4533 Calyculin A Protein phosphatase inhibitor Chromatin/Epigenetics|Protein Ser/Thr Phosphatases 101932-71-2 CC1C(CC2(C(C(C(O2)C(CC(C(C)C(C(C)C=C(C)C(=CC=CC(=CC#N)C)C)O)O)OC)OP(=O)(O)O)(C)C)OC1CC=CC3=COC(=N3)C(C)CCNC(=O)C(C(C(COC)N(C)C)O)O)O
Stored at -20°C, and stable for at least 12 months. When kept at 2-8°C, the product remains stable for 2 months.


Protein phosphorylation is an important covalent post-translational modification that can alter the structural conformation of a protein, which then regulates the function, location and specific binding of the target protein. Many cellular processes are regulated by the reversible phosphorylation of proteins and 30% of the proteins are likely to be phosphorylated at some point during their existence.

Endogenous proteins are produced and degraded in a balanced state, so their cellular levels are stable under stable environmental conditions. Crude cell extracts contain a number of endogenous enzymes, such as phosphatases and proteases, which are capable of degrading and modifying proteins in the extracts. The best way to increase the yield of intact proteins is to add inhibitors of those enzymes known to be present.

Phosphatase Inhibitor Cocktail 3 inhibits L-isozymes of alkaline phosphatases and serine/threonine protein phosphatases such as protein phosphatases 1 and 2A (PP1 and PP2A). This phosphatase inhibitor cocktail has been optimized and tested on cell extracts from various animal tissues. Phosphatase Inhibitor Cocktail 3 can replace Phosphatase Inhibitor Cocktail 1, and the activity of the two cocktails is equivalent.

This phosphatase inhibitor cocktail contains individual components, including Cantharidin, Bromotetramisole and Calyculin A. This phosphatase inhibitor cocktail is supplied as a ready-to-use solution in DMSO.


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