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MABT875-25UG Anti-phospho-cytokeratin-18 (K18) (Ser33) Antibody, clone IB4

Anti-phospho-cytokeratin-18 (K18) (Ser33), clone IB4, Cat. No. MABT875, is a mouse monoclonal antibody that detects type I cytoskeletal-18 and has been tested for use in Immunocytochemistry, Immunofluorescence, Immunoprecipitation, and Western Blotting.

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MABT875-25UG
25 μg  
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      Replacement Information
      Description
      Catalogue NumberMABT875-25UG
      DescriptionAnti-phospho-cytokeratin-18 (K18) (Ser33) Antibody, clone IB4
      Alternate Names
      • Keratin type I cytoskeletal 18
      • Cell proliferation-inducing gene 46 protein
      • CK-18
      • Keratin-18
      • K18
      Background InformationKeratin, type I cytoskeletal 18 (UniProt: P05783; also known as Cell proliferation-inducing gene 46 protein, Cytokeratin-18, CK-18, Keratin-18, K18) is encoded by the KRT18 (also known as CYK18, PIG46) gene (Gene ID: 3875) in human. Cytokeratin-18 is a type I, acidic, protein that is expressed in colon, placenta, and liver. Higher expression levels have been reported in lymph nodes of breast carcinoma. Cytokeratin-18 is involved in the uptake of thrombin-antithrombin complexes by hepatic cells. Upon phosphorylation, it plays a role in filament reorganization. It is proteolytically cleaved by caspases during epithelial cell apoptosis and this cleavage is shown to occur at Asp-238. Phosphorylation of cytokeratin-18 at serine 33 is shown to increase during mitosis in cultured cells and in regenerating liver. Serine 33 phosphorylation is considered to be essential for its association with 14-3-3 proteins and has a role in keratin organization and distribution. Cytokeratin-18 can undergo O-glycosylation, which results in its increased solubility and reduction in its stability. Mutations in KRT18 gene are known to cause liver cirrhosis characterized by severe panlobular liver-cell swelling with Mallory body formation, prominent pericellular fibrosis, and marked deposits of copper.
      References
      Product Information
      FormatPurified
      PresentationPurified mouse monoclonal antibody IgG1 in buffer containing 0.1 M Tris-Glycine (pH 7.4), 150 mM NaCl with 0.05% sodium azide.
      Applications
      ApplicationAnti-phospho-cytokeratin-18 (K18) (Ser33), clone IB4, Cat. No. MABT875, is a mouse monoclonal antibody that detects type I cytoskeletal-18 and has been tested for use in Immunocytochemistry, Immunofluorescence, Immunoprecipitation, and Western Blotting.
      Key Applications
      • Immunocytochemistry
      • Immunofluorescence
      • Immunoprecipitation
      • Western Blotting
      Application NotesImmunocytochemistry Analysis: A representative lot detected phospho-cytokeratin-18 (K18) (Ser33) in immunocytochemistry applications (Ku, N.O., et. al. (1998). EMBO J. 17(7):1892-906).

      Immunoprecipitation Analysis: A representative lot immunoprecipitated phospho-cytokeratin-18 (K18) (Ser33) in immunoprecipitation applications (Ku, N.O., et. al. (1998). EMBO J. 17(7):1892-906).

      Immunofluorescence Analysis: A representative lot detected phospho-cytokeratin-18 (K18) (Ser33) in Immunofluorescence applications (Ku, N.O., et. al. (1998). EMBO J. 17(7):1892-906).

      Western Blotting Analysis: A representative lot detected phospho-cytokeratin-18 (K18) (Ser33) in Western Blotting applications (Yoon, K.H., et. al. (2001). J Cell Biol. 153(3):503-16).
      Biological Information
      ImmunogenKLH-conjugated linear peptide corresponding to 13 amino acids surrounding phosphorylated serine 33 (initiator methionine removed) from the N-terminal region of human cytokeratin-18.
      CloneIB4
      ConcentrationPlease refer to lot specific datasheet.
      HostMouse
      SpecificityClone IB4 specifically detects human cytokeratin-18 phosphorylated on serine 33.
      IsotypeIgG1κ
      Species Reactivity
      • Human
      Species Reactivity NoteHuman.
      Antibody TypeMonoclonal Antibody
      Entrez Gene Number
      Gene Symbol
      • KRT18
      • CYK18
      • PIG46
      Modifications
      • Phosphorylation
      Purification MethodProtein G purified
      UniProt Number
      Molecular Weight~48 kDa observed; 48.06 kDa calculated. Uncharacterized bands may be observed in some lysate(s).
      Physicochemical Information
      Dimensions
      Materials Information
      Toxicological Information
      Safety Information according to GHS
      Safety Information
      Product Usage Statements
      Quality AssuranceEvaluated by Western Blotting in lysates from HeLa cells treated with Calyculin A/Okadaic Acid.

      Western Blotting Analysis: 2 µg/mL of this antibody detected phospho-cytokeratin-18 (K18) (Ser33) in lysate from HeLa cells treated with Calyculin A/Okadaic Acid.
      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 ConditionsStable for 1 year at 2-8°C from date of receipt.
      Packaging Information
      Material Size25 μg
      Transport Information
      Supplemental Information
      Specifications
      Global Trade Item Number
      Référence GTIN
      MABT875-25UG 04054839607851