Register or Login
  • All
  • Uniprot Id
  • Catalog #
  • Peptide Sequence
>   home   >   Products   >   Primary Antibodies   >   Signal Transduction   >   CSK Antibody   

CSK Antibody

Purified Mouse Monoclonal Antibody

  • WB - CSK Antibody AO1469a
    Figure 1: Western blot analysis using CSK mouse mAb against NIH/3T3 (1),Hela (2),COS7 (3), Jurkat (4), Raw246.7 (5), A549 (6), HL-60 (7) and PC-12 (8) cell lysate.
  • IF - CSK Antibody AO1469a
    Figure 2: Immunofluorescence analysis of U251 cells using CSK mouse mAb (green). Blue: DRAQ5 fluorescent DNA dye. Red: Actin filaments have been labeled with Alexa Fluor-555 phalloidin.
  • FC - CSK Antibody AO1469a
    Figure 3: Flow cytometric analysis of HL-60 cells using CSK mouse mAb (green) and negative control (purple).
Product Information
  • Applications Legend:
  • WB=Western Blot
  • IHC=Immunohistochemistry
  • IHC-P=Immunohistochemistry (Paraffin-embedded Sections)
  • IHC-F=Immunohistochemistry (Frozen Sections)
  • IF=Immunofluorescence
  • FC=Flow Cytopmetry
  • IC=Immunochemistry
  • ICC=Immunocytochemistry
  • IP=Immunoprecipitation
  • DB=Dot Blot
  • CHIP=Chromatin Immunoprecipitation
  • FA=Fluorescence Assay
  • IEM=Immunoelectronmicroscopy
  • EIA=Enzyme Immunoassay
Primary Accession P41240
Reactivity Human, Mouse, Rat, Monkey
Host Mouse
Clonality Monoclonal
Clone Names 5F3
Isotype IgG1
Calculated MW 50kDa
Description Carboxy-terminal Src kinase (Csk) is a ubiquitously expressed nonreceptor tyrosine kinase that negatively regulates the Src family kinases (SFK) by phosphorylation of the SFK carboxy-terminal tyrosine. Phosphorylated carboxy-terminal tyrosine binds to the SH2 domain of SFK intramolecularly and leads to folding and inactivation of the SFK . This Csk-catalyzed SFK tyrosine phosphorylation is highly specific and exclusive. The SFK carboxy-terminal tyrosine is the only known physiological substrate of Csk .Tissue specificity: Expressed in lung and macrophages.
Immunogen Purified recombinant fragment of human CSK expressed in E. Coli.
Formulation Ascitic fluid containing 0.03% sodium azide.
Additional Information
Gene ID 1445
Other Names Tyrosine-protein kinase CSK,, C-Src kinase, Protein-tyrosine kinase CYL, CSK
Dilution WB~~1/500 - 1/2000
IF~~1/200 - 1/1000
FC~~1/200 - 1/400
StorageMaintain refrigerated at 2-8°C for up to 6 months. For long term storage store at -20°C in small aliquots to prevent freeze-thaw cycles.
PrecautionsCSK Antibody is for research use only and not for use in diagnostic or therapeutic procedures.
Protein Information
Name CSK
Function Non-receptor tyrosine-protein kinase that plays an important role in the regulation of cell growth, differentiation, migration and immune response. Phosphorylates tyrosine residues located in the C-terminal tails of Src-family kinases (SFKs) including LCK, SRC, HCK, FYN, LYN or YES1. Upon tail phosphorylation, Src-family members engage in intramolecular interactions between the phosphotyrosine tail and the SH2 domain that result in an inactive conformation. To inhibit SFKs, CSK is recruited to the plasma membrane via binding to transmembrane proteins or adapter proteins located near the plasma membrane. Suppresses signaling by various surface receptors, including T- cell receptor (TCR) and B-cell receptor (BCR) by phosphorylating and maintaining inactive several positive effectors such as FYN or LCK.
Cellular Location Cytoplasm. Cell membrane. Note=Mainly cytoplasmic, also present in lipid rafts.
Tissue Location Expressed in lung and macrophages.
Research Areas
Citations (0)

Thousands of laboratories across the world have published research that depended on the performance of antibodies from Abgent to advance their research. Check out links to articles that cite our products in major peer-reviewed journals, organized by research category.

Submit your citation using an Abgent antibody to, and receive a free "I Love Antibodies" mug.


1. Nat Genet. 2009 Jun;41(6):677-87. 2. Leuk Res. 2009 Sep;33(9):e168-9. 3. J Hypertens. 2011 Jan;29(1):62-9.

Abgent welcomes feedback from its customers.

If you have used an Abgent product and would like to share how it has performed, please click on the "Submit Review" button and provide the requested information. Our staff will examine and post your review and contact you if needed.

If you have any additional inquiries please email technical services at

$ 325.00
Cat# AO1469a
(40 western blots)
Availability: 7-10 days
Bulk Size
Seasonal Special on Bulk Order
Request Quote Here

Ordering Information

United States
AlbaniaAustraliaAustriaBelgiumBosnia & HerzegovinaBrazilBulgariaCanadaChinaCroatiaCyprusCzech RepublicDenmarkEstoniaFinlandFranceGermanyGreeceHong KongHungaryIcelandIndiaIndonesiaIrelandIsraelItalyJapanKoreaLatviaLithuaniaLuxembourgMacedoniaMalaysiaMaltaNetherlandsNew ZealandNorwayPakistanPolandPortugalRomaniaSerbiaSingaporeSlovakiaSloveniaSouth AfricaSpainSwedenSwitzerlandTaiwanTurkeyUnited KingdomUnited StatesVietnamOthers
Abgent, Inc.
(888) 735-7227 / (858) 622-0099
(858) 622-0609

Shipping Information

Domestic orders (in stock items)
Shipped out the same day. Orders placed after 1 PM (PST) will ship out the next business day.
International orders
Contact your local distributors
Santa Cruz Alternative
Terms & Conditions