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Anti-Cytokeratin 18 (phospho S52) antibody (ab63393)


  • Product nameAnti-Cytokeratin 18 (phospho S52) antibody
    See all Cytokeratin 18 primary antibodies
  • Description
    Rabbit polyclonal to Cytokeratin 18 (phospho S52)
  • SpecificityThis antibody detects endogenous levels of Cytokeratin 18 only when phosphorylated at serine 52.
  • Tested applicationsWB, ICC/IF, ELISAmore details
  • Species reactivity
    Reacts with: Human
  • Immunogen

    A synthesized phosphopeptide derived from human Cytokeratin 18 around the phosphorylation site of serine 52 (STSPFR)

  • Positive control
    • Hela cells and extracts from HepG2 cells


  • FormLiquid
  • Storage instructionsShipped at 4°C. Store at -20°C. Stable for 12 months at -20°C.
  • Storage bufferPreservative: 0.02% Sodium Azide
    Constituents: 50% Glycerol, PBS (without Mg+2 and Ca+2), 150mM Sodium chloride, pH 7.4
  • Concentration information loading...
  • PurityImmunogen affinity purified
  • Purification notesThe antibody 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.
  • ClonalityPolyclonal
  • IsotypeIgG
  • Research areas


Our Abpromise guarantee covers the use of ab63393 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. Detects a band of approximately 48 kDa (predicted molecular weight: 48 kDa).
ICC/IF 1/500 - 1/1000.
ELISA 1/10000.


  • FunctionInvolved 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 specificityExpressed in colon, placenta, liver and very weakly in exocervix. Increased expression observed in lymph nodes of breast carcinoma.
  • Involvement in diseaseDefects in KRT18 are a cause of cirrhosis (CIRRH) [MIM:215600].
  • Sequence similaritiesBelongs to the intermediate filament family.
  • Post-translational
    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 localizationCytoplasm > 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
    • Keratin 18 antibody
    • Keratin D antibody
    • keratin, type I cytoskeletal 18 antibody
    • Keratin-18 antibody
    • Krt18 antibody
    see all

Anti-Cytokeratin 18 (phospho S52) antibody images

  • Immunofluorescence analysis of HeLa cells, using ab63393 at a 1:500 dilution.
    Left image untreated.
    Right image treated with phospho peptide.
  • All lanes : Anti-Cytokeratin 18 (phospho S52) antibody (ab63393) at 1/500 dilution

    Lane 1 : Extracts from HepG2 cells
    Lane 2 : Extracts from HepG2 cells plus phospho peptide

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

References for Anti-Cytokeratin 18 (phospho S52) antibody (ab63393)

ab63393 has not yet been referenced specifically in any publications.

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