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NuCLEAR Extraction Kit

For mammalian tissue or cultured cells


Quality Level


 kit sufficient for 10 extractions (1 ml packed cell volume)
 kit sufficient for 100 extractions (100 μl packed cell volume)

shipped in

dry ice

storage temp.


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shipped in

dry ice

shipped in

wet ice

shipped in


shipped in

wet ice

storage temp.


storage temp.


storage temp.


storage temp.


Quality Level


Quality Level


Quality Level


Quality Level


General description

The procedure for the nuclear protein extraction method is to allow cells to swell with hypotonic buffer. The cells are then disrupted, the cytoplasmic fraction is removed, and the nuclear proteins are released from the nuclei by a high salt buffer.


NXTRACT kit was used to study the impact of salt on cardiac differential gene expression and coronary lesion in normotensive mineralocorticoid-treated mice. It was also used to test the therapeutic potential of andrographolide for treating endometriosis.

Other Notes

Within this kit is a complete system for preparing nuclear and cytoplasmic protein extracts from mammalian tissue or cultured cells. All reagents necessary for extraction are included.
A number of different procedures in the detailed technical bulletin enable the selection that best fits a particular application. For example, choose between detergent and non-detergent extraction of nuclear protein or between the standard hypotonic lysis buffer for most cell types and isotonic lysis buffer for fragile cells. In addition, the kit provides a procedure for salt reduction from the nuclear extract with dilution buffer. NuCLEAR offers the flexiblity you need for optimal protein extraction. Extracts can be prepared in less than 2 hours and are highly pure since there is little or no cross-contamination between nuclear and cytoplasmic extracts.


Recommended Antibodies for Immunodetection L1293, N2662, AMAB90549

Legal Information

NuCLEAR is a trademark of Sigma-Aldrich Co. LLC

Kit Components Also Available Separately

Product No.

  • 3× Dilution and Equilibration Buffer 90 mL

  • P8340Protease Inhibitor Cocktail 1 mLSDS



Signal Word


Hazard Statements

Hazard Classifications

Eye Dam. 1 - Met. Corr. 1 - Skin Corr. 1A

Storage Class Code

8A - Combustible, corrosive hazardous materials



Flash Point(F)

188.6 °F - closed cup

Flash Point(C)

87 °C - closed cup

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F Guidez et al.
Molecular and cellular biology, 18(7), 3851-3861 (1998-06-25)
Granulocyte-macrophage colony-stimulating factor (GM-CSF) and macrophage colony-stimulating factor (M-CSF) independently stimulate the proliferation and differentiation of macrophages from bone marrow progenitor cells. Although the GM-CSF and M-CSF receptors are unrelated, both couple to Ras-dependent signal transduction pathways, suggesting that these
Wenjing Hao et al.
Redox biology, 18, 43-53 (2018-06-26)
8-Oxoguanine DNA glycosylase 1 (OGG1) initiates the base excision repair pathway by removing one of the most abundant DNA lesions, 8-oxo-7,8-dihydroguanine (8-oxoG). Recent data showed that 8-oxoG not only is a pro-mutagenic genomic base lesion, but also functions as an
Sumie Hiramatsu et al.
Scientific reports, 9(1), 3054-3054 (2019-03-01)
Global DNA hypomethylation in CD4+ cells in systemic lupus erythematosus (SLE) was suggested to play a key role in the pathogenesis. To identify new methylation-sensitive genes, we integrated genome-wide DNA methylation and mRNA profiling data in CD4+ cells of MRL/lpr
Bela Juhasz et al.
American journal of physiology. Heart and circulatory physiology, 294(3), H1365-H1370 (2008-01-15)
Bromelain (Br), a proteolytic enzyme extracted from the stem of the pineapple, is known to possess anti-inflammatory activity and has been shown to reduce blood viscosity, prevent the aggregation of blood platelets, and improve ischemia-reperfusion (I/R) injury in a skeletal
Isolation of intact nuclei for nuclear extract preparation from a fragile B-lymphocyte cell line.
R B Dyer et al.
BioTechniques, 19(2), 192-195 (1995-08-01)


Organelle Isolation

The isolation of subcellular fractions by centrifugation is a commonly used technique and is widely applicable across multiple cell and tissue types. Because organelles differ in their size, shape, and density, centrifugation can be easily employed to separate and purify organelle fractions from gently homogenized samples.

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