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17-10210 ProteoExtract® Native Cytoskeleton Enrichment

The ProteoExtract Native Cytoskeleton Enrichment & Staining Kit provides cytoskeleton purification detergent buffers that retain focal adhesion & actin-associated proteins while removing soluble cytoplasmic & nuclear proteins from the cell.

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Key Applications: Immunofluorescence, Immunocytochemistry
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17-10210
32 assays (1 kit)  Enough Reagents for 4 x 8-well Chamber Slides (32 assays)
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      Replacement Information
      Description
      Catalogue Number17-10210
      Trade Name
      • ProteoExtract
      • Chemicon
      DescriptionProteoExtract® Native Cytoskeleton Enrichment
      OverviewRead our application note in Nature Methods!
      http://www.nature.com/app_notes/nmeth/2012/121007/pdf/an8624.pdf
      (Click Here!)

      Rediscovering the Actin Cytoskeleton: New techniques leading to discoveries in cell migration, Dr. Richard Klemke, Morris Cancer Center, UCSD, USA.

      The actin cytoskeleton is a highly dynamic network composed of actin polymers and a large variety of associated proteins. The functions of the actin cytoskeleton is to mediate a variety of essential biological functions in all eukaryotic cells, including intra- and extra-cellular movement and structural
      Support (Chen, C.S., et al., 2003; Frixione E., 2000). To perform these functions, the organization of the actin cytoskeleton must be tightly regulated both temporally and spatially. Many proteins associated with the actin cytoskeleton are thus likely targets of signaling pathways controlling actin assembly. Actin cytoskeleton assembly is regulated at multiple levels, including the organization of actin monomers (G-actin) into actin polymers and the superorganization of actin polymers into a filamentous network (F-actin – the major constituent of microfilaments) (Bretscher, A., et al., 1994). This superorganization of actin polymers into a filamentous network is mediated by actin side-binding or cross-linking proteins (Dubreuil, R. R., 1991; Matsudaira, P., 1991; Matsudaira, P., 1994). The actin cytoskeleton is a dynamic structure that rapidly changes shape and organization in response to stimuli and cell cycle progression. Therefore, a disruption of its normal regulation may lead to cell transformations and cancer. Transformed cells have been shown to contain less F-actin than untransformed cells and exhibit atypical coordination of F-actin levels throughout the cell cycle (Rao, J.Y., et al., 1990). Orientational distribution of actin filaments within a cell is, therefore, an important determinant of cellular shape and motility.

      Focal adhesion and adherens junctions are membrane-associated complexes that serve as nucleation sites for actin filaments and as cross-linkers between the cell exterior, plasma membrane and actin cytoskeleton (Yamada, K.M., Geiger, B., 1997). The function of focal adhesions is structural, linking the ECM on the outside to the actin cytoskeleton on the inside. They are also sites of signal transduction, initiating signaling pathways in response to adhesion. Focal adhesions consist of integrin-type receptors that are attached to the extracellular matrix and are intracellularly associated with protein complexes containing vinculin (universal focal adhesion marker), talin, α-actinin, paxillin, tensin, zyxin and focal adhesion kinase (FAK) (Burridge, K., et al., 1990; Turner, C.E., Burridge, K., 1991).

      Studying the proteins that associate with and regulate the actin cytoskeleton has been traditionally difficult because of the insolubility of the cytoskeleton in traditional detergents like Triton-X100. Work over the years has shown that many actin regulatory proteins/phospho-proteins upon activation move from the soluble cytoplasmic compartment to the insoluble actin cytoskeleton. The insolubility of these important proteins has made it difficult to study their biochemical changes, such as phosphorylation and nitrosylation, upon binding to actin. What is sorely needed is a cytoskeleton purification method that allows for the selective enrichment of cytoskeleton-associated proteins for detailed protein biochemical analyses. Such a method would provide the means to directly study this important pool of proteins in normal and diseased cytoskeletons.
      Materials Required but Not Delivered1. Pipettors and tips capable of accurately measuring 1-1000 μL

      2. Graduated serological pipettes

      3. Distilled or deionized water

      4. 4% paraformaldehyde solution for fixing cells

      5. 1x Dulbecco’s Phosphate Buffered Saline (D-PBS)

      6. Cover slips

      7. Mounting fluid (EMD Millipore Catalog No. 5013)
      References
      Product Information
      Components
      • One bottle containing 1.9 mL of 10x Cellular Extraction Buffer
      • One bottle containing 3.5 mL of 20x Cytoskeleton Wash Buffer
      • One bottle containing 9 mL of ready to use Nuclear Extraction Buffer
      • One vial containing 100 µL of 1000x Protease Inhibitor Cocktail solution
      • One vial containing 150 µL of 1000x Sodium Orthovanadate solution
      • One vial containing 50 µL of 200x donkey anti-mouse FITC conjugate
      • One bottle containing 12.5 mL of 10x Blocking/Permeabilization Buffer
      • One vial containing 15 µg lyophilized TRITC-Conjugated Phalloidin
      • One vial containing 100 µL of 200x DAPI
      • One vial containing 100 µL of 100x anti-Vinculin mouse monoclonal IgG1 antibody
      • One vial containing 16 µL of 500x anti-GAPDH mouse monoclonal IgG1 antibody
      Quality LevelMQ100
      Applications
      ApplicationThe ProteoExtract Native Cytoskeleton Enrichment & Staining Kit provides cytoskeleton purification detergent buffers that retain focal adhesion & actin-associated proteins while removing soluble cytoplasmic & nuclear proteins from the cell.
      Key Applications
      • Immunofluorescence
      • Immunocytochemistry
      Application NotesThe ProteoExtract® Native Cytoskeleton Enrichment and Staining Kit provides cytoskeleton purification detergent buffers that retain focal adhesion and actin-associated proteins while removing soluble cytoplasmic and nuclear proteins from the cell. Anti-Vinculin and anti-GAPDH antibodies are provided as markers for focal adhesions and cytosol, respectively, in immunofluorescence analysis. This kit will greatly increase the ability to detect and study the low abundance actin-associated proteins which are typically masked in conventional methods of staining whole cells.
      Biological Information
      Physicochemical Information
      Dimensions
      Materials Information
      Toxicological Information
      Safety Information according to GHS
      Safety Information
      Product Usage Statements
      Usage Statement
      • Unless otherwise stated in our catalog or other company documentation accompanying the product(s), our products are intended for research use only and are not to be used for any other purpose, which includes but is not limited to, unauthorized commercial uses, in vitro diagnostic uses, ex vivo or in vivo therapeutic uses or any type of consumption or application to humans or animals.
      Storage and Shipping Information
      Storage ConditionsMaintain the unopened kit modules (17-10210-1 & 17-10210-2) at the indicated temperatures. The kit may be used for up to 4 months after receipt. Avoid repeated freeze/thaw cycles, and aliquot if necessary.
      Packaging Information
      Material Size32 assays (1 kit)
      Material PackageEnough Reagents for 4 x 8-well Chamber Slides (32 assays)
      Transport Information
      Supplemental Information
      Specifications
      Global Trade Item Number
      Numero di catalogo GTIN
      17-10210 04053252001352

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