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

Novus Biologicals | Catalog # NBP2-15186

Novus Biologicals
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Key Product Details

Species Reactivity

Validated:

Human, Ferret (Negative), Rat (Negative)

Cited:

Human

Applications

Validated:

Immunohistochemistry, Immunohistochemistry-Paraffin, Immunohistochemistry-Frozen, Western Blot, Flow Cytometry, Immunocytochemistry/ Immunofluorescence, Simple Western

Cited:

Immunohistochemistry-Paraffin, Flow Cytometry

Label

Unconjugated

Antibody Source

Monoclonal Mouse IgG2a Lambda Clone # A53-B/A2.26
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Product Specifications

Immunogen

Human breast cancer MCF-7 cells

Epitope

aa 312-335

Reactivity Notes

Does not react with Rat or Ferret.

Localization

Cytoplasmic

Marker

Pancreatic Stem Cell Marker

Specificity

This monoclonal antibody 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.

Clonality

Monoclonal

Host

Mouse

Isotype

IgG2a Lambda

Theoretical MW

40 kDa.
Disclaimer note: The observed molecular weight of the protein may vary from the listed predicted molecular weight due to post translational modifications, post translation cleavages, relative charges, and other experimental factors.

Description

200ug/ml of antibody purified from Bioreactor Concentrate by Protein A or G. Prepared in 10 mM PBS with 0.05% BSA & 0.05% azide. Also available WITHOUT BSA & azide at 1.0 mg/ml. (NBP2-33134)

Antibody with azide - store at 2 to 8C. Antibody without azide - store at -20 to -80C.

Scientific Data Images for Cytokeratin 19 Antibody (A53-B/A2.26)

Western Blot: Cytokeratin 19 Antibody (A53-B/A2.26) [NBP2-15186]

Western Blot: Cytokeratin 19 Antibody (A53-B/A2.26) [NBP2-15186]

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]

Immunocytochemistry/ Immunofluorescence: Cytokeratin 19 Antibody (A53-B/A2.26) [NBP2-15186]

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]

Immunohistochemistry-Frozen: Cytokeratin 19 Antibody (A53-B/A2.26) [NBP2-15186]

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]

Western Blot: Cytokeratin 19 Antibody (A53-B/A2.26) [NBP2-15186]

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: Cytokeratin 19 Antibody (A53-B/A2.26) [NBP2-15186]

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]

Immunocytochemistry/ Immunofluorescence: Cytokeratin 19 Antibody (A53-B/A2.26) [NBP2-15186]

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]

Immunohistochemistry-Paraffin: Cytokeratin 19 Antibody (A53-B/A2.26) [NBP2-15186]

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: Cytokeratin 19 Antibody (A53-B/A2.26) [NBP2-15186]

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]

Simple Western: Cytokeratin 19 Antibody (A53-B/A2.26) [NBP2-15186]

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.

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

Application
Recommended Usage

Flow Cytometry

0.5-1 ug/million cells

Immunocytochemistry/ Immunofluorescence

1-2 ug/ml

Immunohistochemistry-Frozen

0.5-1ug/ml

Immunohistochemistry-Paraffin

1-2 ug/ml

Simple Western

10 ug/ml

Western Blot

1-2 ug/ml
Application Notes
Immunohistochemistry (Formalin-fixed): 1-2ug/ml for 30 minutes at RT. Staining of formalin-fixed tissues requires heating tissue sections in 10mM Tris with 1mM EDTA, pH 9.0, for 45 min at 95C followed by cooling at RT for 20 minutes.
Optimal dilution for a specific application should be determined.
See Simple Western Antibody Database for Simple Western validation: Tested in HeLa lysate, separated by Size, antibody dilution of 10 ug/mL, apparent MW was 50 kDa

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Formulation, Preparation, and Storage

Purification

Protein A or G purified

Formulation

10 mM PBS with 0.05% BSA

Preservative

0.05% Sodium Azide

Concentration

0.2 mg/ml

Shipping

The product is shipped with polar packs. Upon receipt, store it immediately at the temperature recommended below.

Stability & Storage

Store at 4C.

Background: Cytokeratin 19

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.

Alternate Names

CK19, EndoC, K19, Krt19

Gene Symbol

KRT19

UniProt

Additional Cytokeratin 19 Products

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

Certificate of Analysis

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Product Specific Notices for Cytokeratin 19 Antibody (A53-B/A2.26)

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.

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

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Protocols

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