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Invitrogen
Cytokeratin 19 Monoclonal Antibody (A53-B/A2), Biotin
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FIGURE: 1 / 1
Cytokeratin 19 Antibody (MA1-19479) in WB
Western blotting analysis of human cytokeratin 19 using mouse monoclonal antibody A53-B/A2 (Product # MA1-19479) on lysates of HT-29 cell line and MOLT-4 cell line (cytokeratin non-expressing cell line; negative control) under non-reducing and reducing conditions. Nitrocellulose membrane was probed with 2µg/mL of biotinylated mouse anti-cytokeratin 19 monoclonal antibody followed by IRDye800-conjugated streptavidin. Cytokeratin 19 was detected at approximately 41kDa.
Please note: We are reviewing Western blot images included in the antibody testing data in our catalog, including those provided by third parties. Unless expressly labeled or annotated as “raw-unedited”, Western blot images included in the antibody testing data in our catalog may have been edited, optimized or otherwise adjusted for presentation.
Product Details
MA1-19479
Applications
Tested Dilution
Publications
Product Specifications
Species Reactivity
Human
Published species
Human
Host/Isotype
Mouse
/ IgG2a
Class
Monoclonal
Type
Antibody
Clone
A53-B/A2
Immunogen
Human mammary adenocarcinoma cell line MCF-7.
Conjugate
Biotin
Biotin
Biotin
Form
Liquid
Concentration
1 mg/mL
Amount
100 µg
Purification
Size-exclusion chromatography
Storage buffer
PBS, pH 7.4
Contains
15mM sodium azide
Storage conditions
4°C, do not freeze
Shipping conditions
Ambient (domestic); Wet ice (international)
RRID
Product Specific Information
This antibody recognizes the rod domain of cytokeratin 19 (40 kDa), an intracellular antigen constituting intermediate cytoskeleton filaments. Cytokeratin 19 is not expressed in hepatocytes; it is often co-expressed with cytokeratin 7.
Target Information
Cytokeratin 19 is part of a subfamily of intermediate filament proteins and are characterized by a remarkable biochemical diversity, represented in human epithelial tissues by at least 20 different polypeptides. Cytokeratins range in molecular weight from 40-68 kDa and isoelectric pH between 4.9 - 7.8. The individual human cytokeratins are numbered 1 to 20. The various epithelia in the human body usually express cytokeratins which are not only characteristic of the type of epithelium, but also related to the degree of maturation or differentiation within an epithelium. Cytokeratin subtype expression patterns are used to an increasing extent in the distinction of different types of epithelial malignancies. The cytokeratin antibodies are not only of assistance in the differential diagnosis of tumors using immunohistochemistry on tissue sections, but are also a useful tool in cytopathology and flow cytometric assays. For example, cytokeratin 19 is not expressed in hepatocytes, therefore, it is useful in the identification of liver metastasis.
For Research Use Only. Not for use in diagnostic procedures. Not for resale without express authorization.
Bioinformatics
Protein Aliases: 40-kDa keratin intermediate filament; C K1CS; CK 19; CK-19; cytokeratin 19; keratin 19, type I; keratin, type I, 40-kd; MGC15366; unnamed protein product
Gene Aliases: CK19; K19; K1CS
UniProt ID: (Human) P08727
Entrez Gene ID: (Human) 3880
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Performance Guarantee
If an Invitrogen™ antibody doesn't perform as described on our website or datasheet,we'll replace the product at no cost to you, or provide you with a credit for a future purchase.*
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