CD44 / HCAM Std. Antibody - Without BSA and Azide
Mouse Monoclonal Antibody [Clone SPM521 ]
- SPECIFICATION
- CITATIONS
- PROTOCOLS
- BACKGROUND
Application ![]()
| WB, IHC, IF, FC |
---|---|
Primary Accession | P16070 |
Other Accession | 960, 502328 |
Reactivity | Human, Baboon |
Host | Mouse |
Clonality | Monoclonal |
Isotype | Mouse / IgG2a, kappa |
Clone Names | SPM521 |
Calculated MW | 80-95kDa |
Gene ID | 960 |
---|---|
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 |
Storage | Store at 2 to 8°C.Antibody is stable for 24 months. |
Precautions | CD44 / HCAM Std. Antibody - Without BSA and Azide is for research use only and not for use in diagnostic or therapeutic procedures. |
Name | CD44 |
---|---|
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. Receptor for LGALS9; the interaction enhances binding of SMAD3 to the FOXP3 promoter, leading to up-regulation of FOXP3 expression and increased induced regulatory T (iTreg) cell stability and suppressive function (By similarity). |
Cellular Location | Cell membrane {ECO:0000250|UniProtKB:P15379}; Single-pass type I membrane protein {ECO:0000250|UniProtKB:P15379}. Note=Colocalizes with actin in membrane protrusions at wounding edges {ECO:0000250|UniProtKB:P15379} |
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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Background
Recognizes a cell surface glycoprotein of 80-95kDa (CD44) on lymphocytes, monocytes, and granulocytes. Its epitope is resistant to digestion by trypsin and chymotrypsin. The CD44 family of glycoproteins exists in a number of variant isoforms, the most common being the standard 85-95kDa or hematopoietic variant (CD44s). Higher molecular weight isoforms are described in epithelial cells (CD44v), which are believed to function in intercellular adhesion and stromal binding. CD44 immunostaining is commonly used for the discrimination of urothelial transitional cell carcinoma in-situ from non-neoplastic changes in the urothelium.
References
Schlossman SF, et. al. Leucocyte Typing V, p1713-1719, Oxford Univ. Press, 1995

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