Millipore Sigma Vibrant Logo

MABT338-25UG Anti-phospho-cytokeratin-8 (K8) (Ser431) Antibody, clone 5B3

Anti-phospho-cytokeratin-8 (K8) (Ser431), clone 5B3, Cat. No. MABT338, is a mouse monoclonal antibody that detects type II Cytokeratin-8 phopshorylated on serine 431 and has been tested for use in Immunofluorescence and Western Blotting.

View This Product on Sigma-Aldrich
MABT338-25UG
25 μg  
Retrieving price...
Price could not be retrieved
Minimum Quantity is a multiple of
Maximum Quantity is
Upon Order Completion More Information
You Saved ()
 
—
Request Pricing
—
Limited Availability Limited Availability
In Stock 
Discontinued
Limited Quantities Available
Availability to be confirmed
    Remaining : Will advise
      Remaining : Will advise
      Will advise
      Contact Customer Service
      Contact Customer Service

       

      Contact Customer Service

      Overview

      Replacement Information
      Description
      Catalogue NumberMABT338-25UG
      DescriptionAnti-phospho-cytokeratin-8 (K8) (Ser431) Antibody, clone 5B3
      Alternate Names
      • Keratin
      • type II cytoskeletal 8
      • CK-8
      • Keratin-8
      • K8
      • Type-II keratin Kb80
      Background InformationKeratin, type II cytoskeletal 8 (UniProt: P05787; also known as Cytokeratin-8, CK-8 Keratin-8, K8, Type-II keratin Kb80) is encoded by the KRT8 (also known as CYK8) gene (Gene ID: 3856) in human. Cytokeratin-8 is a type II, neutral to basic, protein of the intermediate filament family that together with Cytokeratin-19 (KRT19) helps to link the contractile apparatus to dystrophin at the costameres of striated muscle. Cytokeratin-8 can undergo phosphorylation on three major serine residues: Serine 23, 431, and 73. Serine 23 is shown to be highly conserved in all type II keratins. Phosphorylation at Serine 431 is reported to increase during mitosis and upon treatment with epidermal growth factor. Cytokeratin-8 can also undergo O-glycosylation in a cell cycle-dependent manner and glycosylation increases its solubility and reduces stability by inducing proteasomal degradation. Mutations in KRT8 gene have been linked to liver cirrhosis that is characterized by severe panlobular liver-cell swelling with Mallory body formation, prominent pericellular fibrosis, and marked deposits of copper. Two isoforms of Cytokeratin-8 have been described that are produced by alternative splicing.
      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-8 (K8) (Ser431), clone 5B3, Cat. No. MABT338, is a mouse monoclonal antibody that detects type II Cytokeratin-8 phopshorylated on serine 431 and has been tested for use in Immunofluorescence and Western Blotting.
      Key Applications
      • Immunofluorescence
      • Western Blotting
      Application NotesImmunofluorescence Analysis: A representative lot detected phospho-cytokeratin-8 (K8) (Ser431) in Immunofluorescence applications (Ku, N.O., et. al. (1997). J Biol Chem. 272(11):7556-64).

      Western Blotting Analysis: A representative lot detected phospho-cytokeratin-8 (K8) (Ser431) in Western Blotting applications (Yoon, K.H., et. al. (2001). J Cell Biol. 153(3):503-16; Ridge, K.M., et. al. (2005). J Biol Chem. 280(34):30400-5; Ku, N.O., et. al. (1997). J Biol Chem. 272(11):7556-64).
      Biological Information
      ImmunogenCytokeratin-8/18 purified from okadaic acid-treated HT29 cells.
      Clone5B3
      ConcentrationPlease refer to lot specific datasheet.
      HostMouse
      SpecificityClone 5B3 specifically detects cytokeratin-8 phosphorylated on serine 431.
      IsotypeIgG1κ
      Species Reactivity
      • Human
      • Mouse
      Species Reactivity NoteMouse, Human.
      Antibody TypeMonoclonal Antibody
      Entrez Gene Number
      Gene Symbol
      • KRT8
      • CYK8
      Modifications
      • Phosphorylation
      Purification MethodProtein G purified
      UniProt Number
      Molecular Weight~53 kDa observed; 53.70 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-8 (K8) (Ser431) 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
      Catalogue Number GTIN
      MABT338-25UG 04054839607790