- CITATIONS: 1
|Application ||WB, IHC|
|Reactivity||Human, Mouse, Rat|
|Calculated MW||122102 Da|
|Other Names||Mucin-1, MUC-1, Breast carcinoma-associated antigen DF3, Cancer antigen 15-3, CA 15-3, Carcinoma-associated mucin, Episialin, H23AG, Krebs von den Lungen-6, KL-6, PEMT, Peanut-reactive urinary mucin, PUM, Polymorphic epithelial mucin, PEM, Tumor-associated epithelial membrane antigen, EMA, Tumor-associated mucin, CD227, Mucin-1 subunit alpha, MUC1-NT, MUC1-alpha, Mucin-1 subunit beta, MUC1-beta, MUC1-CT, MUC1, PUM|
|Target/Specificity||A synthetic peptide corresponding to residues near the N-terminus of human MUC1 was used as an 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||MUC1 Antibody (isoform 7) is for research use only and not for use in diagnostic or therapeutic procedures.|
|Function||The alpha subunit has cell adhesive properties. Can act both as an adhesion and an anti-adhesion protein. May provide a protective layer on epithelial cells against bacterial and enzyme attack.|
|Cellular Location||Apical cell membrane; Single- pass type I membrane protein. Note=Exclusively located in the apical domain of the plasma membrane of highly polarized epithelial cells. After endocytosis, internalized and recycled to the cell membrane. Located to microvilli and to the tips of long filopodial protusions Isoform Y: Secreted. Mucin-1 subunit beta: Cell membrane. Cytoplasm. Nucleus. Note=On EGF and PDGFRB stimulation, transported to the nucleus through interaction with CTNNB1, a process which is stimulated by phosphorylation. On HRG stimulation, colocalizes with JUP/gamma-catenin at the nucleus|
|Tissue Location||Expressed on the apical surface of epithelial cells, especially of airway passages, breast and uterus. Also expressed in activated and unactivated T-cells. Overexpressed in epithelial tumors, such as breast or ovarian cancer and also in non-epithelial tumor cells. Isoform 7 is expressed in tumor cells only.|
Provided below are standard protocols that you may find useful for product applications.
Mucins are high molecular weight glycoproteins that provide a protective layer on epithelial surfaces and are involved in cell-cell interactions, signaling, and metastasis. MUC1 consists of an extracellular subunit and a membrane-associated subunit (1). The two moieties are produced from a single precursor polypeptide by an early proteolytic cleavage event but remain associated throughout intracellular processing and transport to the cell surface. It has been shown that MUC1 expression inhibits erbB1 (regulators of cell survival and growth) degradation and also E-cadherin (2). Isoform 7 of MUC1 behaves as a receptor and binds the secreted isoform 5. The binding induces the phosphorylation of the isoform 7, alters cellular morphology and initiates cell signaling (3).
1. Parry S, et al, Biochem Biophys Res Commun 283(3): 715-20, 2001
2. Pochampalli MR et al., Oncogene, Sept 18, 2006
3. Kigure S, et al. Rinsho Byori 54(5): 447-52, 2006
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