System Certification ISO 9001:2000
Exbio Antibodies CZ / SK eShop
by categories | a-z list | Application type: Flow Cytometry | Immunohistochemistry | Functional Studies

Mouse Monoclonal to Csk

CSK-04 (IgG1)

Technical Information Request    Inquiry for Bulk Prices

Product No. Form Quantity Stock Price Datasheet Shop
  11-378-R025 purified 0.025 ml yes choose region PDF datasheetHTML datasheet buy
  11-378-R100 purified 0.1 ml yes choose region PDF datasheetHTML datasheet buy
- In stock! Ready for immediate despatch - Manufacture on order


C-terminal Src kinase (Csk) is a non-receptor protein tyrosine kinase which resembles Src-family kinases, but unlike them lacks the conserved autophosphorylation site, the regulatory C-terminal tyrosine as well as myristylation and palmitylation. Csk negatively regulates Src-family kinases by phosphorylation of their C-terminal regulatory tyrosine. Disruption of the csk gene causes constitutive activation of Src-family kinases, and overexpression of Csk usually counteracts their signaling. The Csk-mediated regulation of those Src-family kinases that are localized in lipid rafts is enabled by a ubiquitously expressed transmembrane adaptor PAG (also known as Cbp, Csk-binding protein), which recruits Csk.


The antibody CSK-04 reacts with Csk (C-terminal Src kinase), a 50 kDa non-receptor protein tyrosine kinase expressed in cytosol.

Regulatory Status


Bacterially expressed recombinant fragment of human Csk corresponding to aa 330-450.

Species Reactivity:

  • Human
  • Mouse
  • Other not determined

Negative Species:


  • Western Blotting
    Application note:
    The recommended dilution of the antibody CSK-04 is 1:250-1:300. Weak non-specific band of cca 60 kDa is detected in human cell lines in lower antibody dilutions.
  • Immunoprecipitation
    Application note:
    The immunosorbent (CSK-04 antibody covalently bound to beads) immunoprecipitates Csk from cell lysates.
  • Immunocytochemistry
    Positive control: HeLa human cervix carcinoma cell line
Usage note:
Indicated dilutions are recommended starting points for use of this product. Working concentrations should be determined by the investigator.

General references

  • *Sabe H, Okada M, Nakagawa H, Hanafusa H: Activation of c-Src in cells bearing v-Crk and its suppression by Csk. Mol Cell Biol. 1992 Oct;12(10):4706-13. [Abstract] [Full Text]
  • *Chow LM, Fournel M, Davidson D, Veillette A: Negative regulation of T-cell receptor signalling by tyrosine protein kinase p50csk. Nature. 1993 Sep 9;365(6442):156-60. [Abstract]
  • *Bergman M, Joukov V, Virtanen I, Alitalo K: Overexpressed Csk tyrosine kinase is localized in focal adhesions, causes reorganization of alpha v beta 5 integrin, and interferes with HeLa cell spreading. Mol Cell Biol. 1995 Feb;15(2):711-22. [Abstract] [Full Text]
  • *Takayama Y, Tanaka S, Nagai K, Okada M: Adenovirus-mediated overexpression of C-terminal Src kinase (Csk) in type I astrocytes interferes with cell spreading and attachment to fibronectin. Correlation with tyrosine phosphorylations of paxillin and FAK. J Biol Chem. 1999 Jan 22;274(4):2291-7. [Abstract] [Full Text]
  • *Ingley E: Src family kinases: regulation of their activities, levels and identification of new pathways. Biochim Biophys Acta. 2008 Jan;1784(1):56-65. [Abstract]
  • *Liang F, Luo Y, Dong Y, Walls CD, Liang J, Jiang HY, Sanford JR, Wek RC, Zhang ZY: Translational Control of C-terminal Src Kinase (Csk) Expression by PRL3 Phosphatase. J Biol Chem. 2008 Apr 18;283(16):10339-46. [Abstract]
  • For research use only. Not for drug, diagnostic or other use.

    Related Products

  • Mouse IgG1 Isotype Control
  • Example Data

    Csk-04 HeLa
    Fig. 1.

    Fig. 1. Immunofluorescence staining of Csk in human HeLa cell line using anti-Csk (CSK-04; green). Actin cytoskeleton was decorated by phalloidin (red) and cell nuclei stained with DAPI (blue).

    Unless indicated otherwise, all products are For Research Use Only and not for diagnostic or therapeutic use. Not for resale or transfer either as a stand-alone product or as a component of another product without written consent of EXBIO. EXBIO will not be held responsible for patent infringement or other violations that may occur with the use of our products. All orders are accepted subject to EXBIO´s term and conditions which are available at
    © 2003 EXBIO. All rights reserved.
    terms and conditions | privacy policy