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Antigen Background

Cytokeratins are a large family of cytoskeletal proteins found in epithelial cells. They are coordinately synthesized in pairs so that at least one member of each family is expressed in each epithelial cell. Cytokeratins assemble into obligatory heteropolymers composed of type I (acidic) and type II (basic) polypeptides to form higher order tetramers and protofilaments. Basal cells of human epidermis express acidic keratin 14 and basic cytokeratin 5. Cytokeratin 5 is a 58 kD protein that is closely related to cytokeratin 6. They share similar tissue distribution and are found in various proportions in many non-keratinizing stratified squamous epithelia eg tongue mucosa, as well as in basal epithelia of trachea, basal cells of epidermis, hair follicles, sebaceous and sweat glands of skin, luminal cells of the mammary gland, basal cells of prostate, urothelium, vagina and endocervical mucosa. Cytokeratins 5 and 6 are also expressed in basal cell epitheliomas, squamous cell carcinomas of skin, tongue, epiglottis and of the rectal-anal region. Point mutations in the cytokeratin 5 gene at locus 12q11-q13 can cause various types of epidermolysis bullosa simplex. Cytokeratin 5 is also reported to be expressed in most epithelial and biphasic mesotheliomas.

 Product Specific Information

 Clone XM26 is specific for the 58 kD intermediate filament protein known as cytokeratin 5. It is not cross-reactive with cytokeratin 6.

Human prostate: immunohistochemical staining for cytokeratin 5 using NCL-L-CK5. Note intense cytoplasmic staining of myoepithelial cells. Paraffin section.
Human prostate: immunohistochemical staining for cytokeratin 5 using NCL-L-CK5. Note intense cytoplasmic staining of myoepithelial cells. Paraffin section.

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CLONE: XM26

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Code Name Configuration Use Datasheet MSDS Qty
PA0468 7ml Cytokeratin 5 Bond RTU Primary Bond ready to use reagent P(HIER) Info MSDS
CK5-L 1ml NCL-L-CK5 Liquid Concentrated Monoclonal Antibody F, P(HIER), W Info MSDS
CK5-L-CE 1ml NCL-L-CK5 Liquid Concentrated Monoclonal Antibody P(HIER) Info MSDS
CK5-L-CE-H 0.5ml NCL-L-CK5 Liquid Concentrated Monoclonal Antibody P(HIER) Info MSDS
CK5-L-CE-S 0.1ml NCL-L-CK5 Liquid Concentrated Monoclonal Antibody P(HIER) Info MSDS
CK5-L-H 0.5ml NCL-L-CK5 Liquid Concentrated Monoclonal Antibody P(HIER) Info MSDS
CK5-L-S 0.1ml NCL-L-CK5 Liquid Concentrated Monoclonal Antibody P(HIER) Info MSDS