|Application ||WB, IHC|
|Reactivity||Human, Mouse, Rat|
|Calculated MW||48058 Da|
|Other Names||Keratin, type I cytoskeletal 18, Cell proliferation-inducing gene 46 protein, Cytokeratin-18, CK-18, Keratin-18, K18, KRT18, CYK18|
|Target/Specificity||A synthetic peptide corresponding to residues of human Cytokeratin 18 was used as immunogen.|
|Format||50 mM Tris-Glycine (pH 7.4), 0.15 M NaCl, 40% Glycerol, 0.01% sodium azide and 0.05% BSA.|
|Storage||Maintain refrigerated at 2-8°C for up to 6 months. For long term storage store at -20°C in small aliquots to prevent freeze-thaw cycles.|
|Precautions||Cytokeratin-18 Antibody is for research use only and not for use in diagnostic or therapeutic procedures.|
|Function||Involved in the uptake of thrombin-antithrombin complexes by hepatic cells (By similarity). When phosphorylated, plays a role in filament reorganization. Involved in the delivery of mutated CFTR to the plasma membrane. Together with KRT8, is involved in interleukin-6 (IL-6)-mediated barrier protection.|
|Cellular Location||Cytoplasm, perinuclear region. Nucleus, nucleolus|
|Tissue Location||Expressed in colon, placenta, liver and very weakly in exocervix. Increased expression observed in lymph nodes of breast carcinoma.|
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Provided below are standard protocols that you may find useful for product applications.
Keratin polypeptides 8 and 18 (K8/18) are intermediate filament phosphoglycoproteins that are expressed preferentially in glandular epithelia. Cytokeratins play a critical role in differentiation and tissue specialization and function to maintain the overall structural integrity of epithelial cells (1-3). Together with actin microfilaments and microtubules, keratin filaments make up the cytoskeletons of vertebrate epithelial cells, forming alpha-helical coiled-coil dimers which associate laterally and end-to-end to form 10-nm diameter filaments (4).
1. Ku, N.O. and M.B. Omary. Identification and mutational analysis of the glycosylation sites of human keratin 18. J Biol Chem. 270: 11820
2. Kulesh, D.A. and R.G. Oshima. Cloning of the human keratin 18 gene and its expression in nonepithelial mouse cells. Mol Cell Biol. 8: 1540
3. Marceau, N. and A. Loranger. Cytokeratin expression, fibrillar organization and subtle function in liver cells. Biochem. Cell Biol. 73: 619
4. Fuchs, E. Keratins and the skin. Annu. Rev. Cell. Dev. Biol. 11: 123
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