Overview

  • Product name

    Anti-Cytokeratin 18 (phospho S33) antibody
    See all Cytokeratin 18 primary antibodies
  • Description

    Rabbit polyclonal to Cytokeratin 18 (phospho S33)
  • Host species

    Rabbit
  • Specificity

    ab75747 detects endogenous levels of Cytokeratin 18 only when phosphorylated at serine 33.
  • Tested applications

    Suitable for: WB, IHC-Pmore details
  • Species reactivity

    Reacts with: Human
  • Immunogen

    Synthetic phosphopeptide derived from human Cytokeratin 18 around the phosphorylation site of serine 33 (A-A-SP-V-Y).

  • Positive control

    • Human breast carcinoma tissue; extracts from A431 cells and EC-304 cells.

Properties

  • Form

    Liquid
  • Storage instructions

    Shipped at 4°C. Upon delivery aliquot and store at -20°C. Avoid freeze / thaw cycles.
  • Storage buffer

    pH: 7.40
    Preservative: 0.02% Sodium azide
    Constituents: 50% Glycerol, 0.87% Sodium chloride, PBS

    Without Mg2+ and Ca2+
  • Concentration information loading...
  • Purity

    Immunogen affinity purified
  • Purification notes

    ab75747 was affinity purified from rabbit antiserum by affinity chromatography using epitope specific phosphopeptide. The antibody against non phosphopeptide was removed by chromatography using non phosphopeptide corresponding to the phosphorylation site.
  • Clonality

    Polyclonal
  • Isotype

    IgG
  • Research areas

Applications

Our Abpromise guarantee covers the use of ab75747 in the following tested applications.

The application notes include recommended starting dilutions; optimal dilutions/concentrations should be determined by the end user.

Application Abreviews Notes
WB 1/500 - 1/1000. Predicted molecular weight: 48 kDa.
IHC-P 1/50 - 1/100.

Target

  • Function

    Involved in the uptake of thrombin-antithrombin complexes by hepatic cells (By similarity). When phosphorylated, plays a role in filament reorganization. Involved in the delivery of mutated CFTR to the plasma membrane. Together with KRT8, is involved in interleukin-6 (IL-6)-mediated barrier protection.
  • Tissue specificity

    Expressed in colon, placenta, liver and very weakly in exocervix. Increased expression observed in lymph nodes of breast carcinoma.
  • Involvement in disease

    Defects in KRT18 are a cause of cirrhosis (CIRRH) [MIM:215600].
  • Sequence similarities

    Belongs to the intermediate filament family.
  • Post-translational
    modifications

    Phosphorylation at Ser-34 increases during mitosis. Hyperphosphorylated at Ser-53 in diseased cirrhosis liver. Phosphorylation increases by IL-6.
    Proteolytically cleaved by caspases during epithelial cell apoptosis. Cleavage occurs at Asp-238 by either caspase-3, caspase-6 or caspase-7.
    O-glycosylated at multiple sites; glycans consist of single N-acetylglucosamine residues.
  • Cellular localization

    Cytoplasm > perinuclear region.
  • Information by UniProt
  • Database links

  • Alternative names

    • Cell proliferation inducing gene 46 protein antibody
    • Cell proliferation inducing protein 46 antibody
    • Cell proliferation-inducing gene 46 protein antibody
    • CK 18 antibody
    • CK-18 antibody
    • CK18 antibody
    • CYK 18 antibody
    • CYK18 antibody
    • Cytokeratin 18 antibody
    • Cytokeratin endo B antibody
    • Cytokeratin-18 antibody
    • K 18 antibody
    • K18 antibody
    • K1C18_HUMAN antibody
    • KA18 antibody
    • Keratin 18 antibody
    • Keratin 18, type I antibody
    • Keratin D antibody
    • keratin, type I cytoskeletal 18 antibody
    • Keratin-18 antibody
    • Krt18 antibody
    see all

Images

  • ab75747, at a 1/50 dilution, staining Cytokeratin 18 in paraffin embedded human breast carcinoma tissue by Immunohistochemistrytissue by Immunohistochemsitry in the absence (left image) or presence (right image) of the immunizing peptide.
  • All lanes : Anti-Cytokeratin 18 (phospho S33) antibody (ab75747) at 1/500 dilution

    Lane 1 : A431 cell extracts with immunising peptide
    Lane 2 : A431 cell extracts
    Lane 3 : EC-304 cell extracts

    Predicted band size: 48 kDa
    Observed band size: 48 kDa

References

ab75747 has not yet been referenced specifically in any publications.

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