|Application ||WB, IHC|
|Calculated MW||81538 Da|
|Other Names||CD44 antigen, CDw44, Epican, Extracellular matrix receptor III, ECMR-III, GP90 lymphocyte homing/adhesion receptor, HUTCH-I, Heparan sulfate proteoglycan, Hermes antigen, Hyaluronate receptor, Phagocytic glycoprotein 1, PGP-1, Phagocytic glycoprotein I, PGP-I, CD44, CD44, LHR, MDU2, MDU3, MIC4|
|Target/Specificity||A synthetic peptide corresponding to residues in human CD-44 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||CD44 Antibody is for research use only and not for use in diagnostic or therapeutic procedures.|
|Synonyms||LHR, MDU2, MDU3, MIC4|
|Function||Receptor for hyaluronic acid (HA). Mediates cell-cell and cell-matrix interactions through its affinity for HA, and possibly also through its affinity for other ligands such as osteopontin, collagens, and matrix metalloproteinases (MMPs). Adhesion with HA plays an important role in cell migration, tumor growth and progression. In cancer cells, may play an important role in invadopodia formation. Also involved in lymphocyte activation, recirculation and homing, and in hematopoiesis. Altered expression or dysfunction causes numerous pathogenic phenotypes. Great protein heterogeneity due to numerous alternative splicing and post-translational modification events.|
|Cellular Location||Cell membrane; Single-pass type I membrane protein. Note=Colocalizes with actin in membrane protrusions at wounding edges.|
|Tissue Location||Isoform 10 (epithelial isoform) is expressed by cells of epithelium and highly expressed by carcinomas Expression is repressed in neuroblastoma cells|
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Provided below are standard protocols that you may find useful for product applications.
CD44 is a cell-surface glycoprotein postulated to play a role in a variety of biological processes, including lymphocyte homing and tumor-cell metastasis. Several isoforms of CD44 have been identified in human cells, and the genesis of some of these isoforms has been attributed to alternative splicing. Understanding of mechanisms regulating CD44 alternative splicing may provide insights into diverse processes, including tumor-cell metastasis and lymphocyte homing (1). The deduced protein sequence of 699 amino acids has a novel 339 amino acid domain inserted into the proximal extracellular domain of the standard, leukocyte form of CD44. The additional domain adds a number of potential N- and O-linked glycosylation sites and two proteolysis sites to this form of CD44 (2). CD44 is defined as a structurally diverse, but immunologically related, set of intrinsic membrane macromolecules, and suggests that these structurally varied forms might be expected to manifest multiple functions (3)
1. Tanabe KK, et al. Mol Carcinog. 7(4):212-20, 1993.
2. Kugelman LC, et al. J Invest Dermatol 99(6):886-91, 1992
3. Brown TA, et al. J Cell Biol 113(1):207-21, 1991.
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