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The antibody 123A8 is directed against human NCAM/CD56 and reacts with an epitope within the membrane-proximal region of the NCAM molecule. The antibody binds to all NCAM isoforms.
Staining of paraffin embedded tissues with 123A8 is possible following heat mediated antigen retrieval of paraffin sections using 10mM citrate buffer, pH 6.0.
The antibody may be stored at 4°C. For prolonged storage prepare appropriate aliquots and store at or below -20°C. Prior to use, an aliquot is thawed slowly in the dark at ambient temperature, spun down again and used to prepare working dilutions by adding sterile phosphate buffered saline (PBS, pH 7.2). Repeated thawing and freezing should be avoided. Working dilutions should be stored at 4°C, not refrozen, and preferably used the same day. If a slight precipitation occurs upon storage, this should be removed by centrifugation. It will not affect the performance or the concentration of the product.
CD56 (NCAM, neural cell adhesion molecule) is a transmembrane glycoprotein of the immunoglobulin family that serves as an adhesive molecule and is ubiquitously expressed in the nervous system in isoforms ranging from 120-180 kDa. CD56 is found on T cells and NK cells, and is involved in cell migration, axonal growth, pathfinding and synaptic plasticity. Polysialic modification results in reduction of CD56-mediated cell adhesion. Through its extracellular region, CD56 mediates homophilic and heterophilic interactions by binding extracellular matrix components such as laminin and integrins. CD56 is expressed on most neuroectodermal derived cell lines, tissues and neoplasms such as retinoblastoma, medulloblastoma, astrocytomas and neuroblastoma. Further, CD56 is a widely used neuroendocrine marker with a high sensitivity for neuroendocrine tumors and ovarian granulosa cell tumors. Diseases associated with CD56 dysfunction include rabies and blastic plasmacytoid dendritic cell neoplasms.
For Research Use Only. Not for use in diagnostic procedures. Not for resale without express authorization.
Protein Aliases: antigen recognized by monoclonal antibody 5.1H11; CD-56; CD56; E NCAM; N CAM1; N-CAM-1; neural cell adhesion molecule; Neural cell adhesion molecule 1; neural cell adhesion molecule, NCAM; sCD56; sNCAM; soluble CD56; soluble NCAM
Gene Aliases: CD56; MSK39; NCAM; NCAM1
UniProt ID: (Human) P13591
Entrez Gene ID: (Human) 4684
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