Cytokeratin 19 Antibody (A53-B/A2.26)

Western Blot: Cytokeratin 19 Antibody (A53-B/A2.26) [NBP2-15186] - Western Blot Analysis of human Prostate Cancer PC-3 cell lysate Cytokeratin 19 Antibody (A53-B/A2.26).

Immunocytochemistry/Immunofluorescence: Cytokeratin 19 Antibody (A53-B/A2.26) [NBP2-15186] - Immunofluorescence Analysis of MCF-7 cells labeling Cytokeratin 19 with Cytokeratin 19 Antibody (A53-B/A2.26) followed by Goat anti-Mouse IgG-CF488 (Cyan). The nuclear counterstain is Red Dot (Red)

Immunohistochemistry-Frozen: Cytokeratin 19 Antibody (A53-B/A2.26) [NBP2-15186] - Breast cancer tissue stained for Cytokeratin 19 (red) and counter stained with DAPI (blue). IHC-Fr image submitted by a verified customer review. Image using the Janelia Fluor 549, Azide and BSA free format of this antibody.

Western Blot: Cytokeratin 19 Antibody (A53-B/A2.26) [NBP2-15186] - analysis of Keratin-19 in 1) HepG2 and 2) MCF7 lysate using of Keratin-19 antibody at 1 ug/ml. goat anti-mouse Ig HRP secondary antibody and PicoTect ECL substrate solution were used for this test.

Western Blot: Cytokeratin 19 Antibody (A53-B/A2.26) [NBP2-15186] - Western blot 1) Hep-G2 and 2) MCF-7 lysate using of Cytokeratin 19 Antibody (A53-B/A2.26).

Immunocytochemistry/Immunofluorescence: Cytokeratin 19 Antibody (A53-B/A2.26) [NBP2-15186] - HepG2 cells were fixed for 10 minutes using 10% formalin and then permeabilized for 5 minutes using 1X PBS + 0.5% Triton-X100. The cells were incubated with anti-Cytokeratin 19 (A53-B/A2.26) conjugated to Alexa Fluor 488 [NBP2-33134AF488] at 10ug/ml for 1 hour at room temperature. Nuclei were counterstained with DAPI (Blue). Cells were imaged using a 40X objective. Image from the Alexa Fluor 488 version of this antibody.

Immunohistochemistry-Paraffin: Cytokeratin 19 Antibody (A53-B/A2.26) [NBP2-15186] - Formalin-paraffin colon carcinoma stained with Cytokeratin 19 Ab (A53-B/A2.26).

Simple Western: Cytokeratin 19 Antibody (A53-B/A2.26) [NBP2-15186] - Simple Western lane view shows a specific band for Cytokeratin 19 in 0.2 mg/ml of HeLa lysate(s). This experiment was performed under reducing conditions using the 12-230 kDa separation system.

Simple Western: Cytokeratin 19 Antibody (A53-B/A2.26) [NBP2-15186] - Electropherogram image of the corresponding Simple Western lane. Cytokeratin 19 antibody was used at 10 ug/ml dilution of HeLa lysates(s) respectively.

• Reactivity: Hu
• Applications: WB, Simple Western, ELISA, Flow, ICC/IF, IHC, IHC-Fr, IHC-P, IP
• Clone: A53-B/A2.26
• Clonality: Monoclonal
• Host: Mouse
• Conjugate: Unconjugated
• Concentration: 0.2 mg/ml

Cytokeratin 19 Antibody (A53-B/A2.26) Summary

• Immunogen: Human breast cancer MCF-7 cells were used as the immunogen for the Keratin-19 antibody.
• Localization: Cytoplasmic
• Marker: Epithelial Cell Marker
• Specificity: This MAb reacts with the rod domain of human cytokeratin-19 (CK19), a polypeptide of 40kDa. Its epitope maps between amino acid 312-335. CK19 is expressed in sweat gland, mammary gland ductal and secretory cells, bile ducts, gastrointestinal tract, bladder urothelium, oral epithelia, esophagus, and ectocervical epithelium. Anti-CK19 reacts with a wide variety of epithelial malignancies including adenocarcinomas of the colon, stomach, pancreas, biliary tract, liver, and breast. Perhaps the most useful application is the identification of thyroid carcinoma of the papillary type, although 50%-60% of follicular carcinomas are also labeled. Anti-CK19 is a useful marker for detection of tumor cells in lymph nodes, peripheral blood, bone marrow and breast cancer.
• Isotype: IgG2a Kappa
• Clonality: Monoclonal
• Host: Mouse
• Gene: KRT19
• Purity: Protein G purified

Applications/Dilutions

• Dilutions:
  • Western Blot 0.5-1ug/ml
  • Simple Western 10 ug/ml
  • ELISA 1-5ug/ml for coating
  • Flow Cytometry 0.5-1ug/million cells
  • Immunocytochemistry/Immunofluorescence 1-2ug/ml
  • Immunohistochemistry
  • Immunohistochemistry-Frozen 0.5-1ug/ml
  • Immunohistochemistry-Paraffin 0.5-1ug/ml
  • Immunoprecipitation 1-2ug/500ug protein lysate
• Application Notes: Immunohistochemical staining of formalin/paraffin tissues is enhanced by unmasking of the target epitope by boiling the tissue sections in 10mM citrate buffer, pH 6.0, for 10 min followed by cooling at room temp for 20 min.
  Immunohistochemistry-Frozen and Immunoprecipitation applications cited in literature.
  
  In Simple Western only 10 - 15 uL of the recommended dilution is used per data point. Separated by Size.

Reactivity Notes

The A53-B antibody strongly binds to human Keratin-19 and weakly binds to mouse, rat and guinea pig Keratin-19.

Packaging, Storage & Formulations

• Storage: Store at 4C.
• Buffer: 10 mM PBS with 0.05% BSA
• Preservative: 0.05% Sodium Azide
• Concentration: 0.2 mg/ml
• Purity: Protein G purified

Alternate Names for Cytokeratin 19 Antibody (A53-B/A2.26)

• 40-kDa keratin intermediate filament
• CK19
• CK-19
• Cytokeratin 19
• EndoC
• K19
• K1CS
• keratin 19
• keratin, type I cytoskeletal 19
• keratin, type I, 40-kd
• keratin-19
• Krt19
• MGC15366

Background

Keratin-19 (K19) is a type I intermediate filament protein and one of the best characterized of the keratins expressed in mature striated muscle. Keratin-19 is expressed in a defined zone of basal keratinocytes in the deep outer root sheath of hair follicles. Also observed in sweat gland and mammary gland ductal and secretory cells, bile ducts, gastrointestinal tract, bladder urothelium, oral epithelia, esophagus, ectocervical epithelium. Keratin-19 has been used as a useful marker for detection of tumor cells in lymph nodes, peripheral blood, bone marrow and breast cancer. Immunohistochemical data has shown that Keratin-19 may be uses as a marker for human skin stem cells. This antibody reacts with the rod domain of human Keratin-19, a polypeptide of 40kDa. The antibody recognition epitope maps between amino acid 312-335. This antibody reacts with the MCF-7 cells which are known to contain Keratin-19. It shows no reaction with the cells lacking Keratin-19 such as A431 and HeLa. Keratin-19 is not expressed in hepatocytes, therefore antibody to Keratin-19 is useful in the identification of liver metastasis.

Limitations

This product is for research use only and is not approved for use in humans or in clinical diagnosis. Primary Antibodies are guaranteed for 1 year from date of receipt.

Bioinformatics

• Gene Symbol: KRT19
• Uniprot:
  • P08727()