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NCAM1 (CD56) (MY31) Mouse mAb (FITC Conjugate)
Antibody Conjugates

Monoclonal Antibody - NCAM1 (CD56) (MY31) Mouse mAb (FITC Conjugate), UniProt ID P13591, Entrez ID 4684 #67184


H Endogenous Mouse IgG1, kappa
Flow Cytometry - NCAM1 (CD56) (MY31) Mouse mAb (FITC Conjugate)

Flow cytometric analysis of live human peripheral blood mononuclear cells using NCAM1 (CD56) (MY31) Mouse mAb (FITC Conjugate) and co-stained with CD3 (UCHT1) Mouse mAb (APC Conjugate) #19881 (right), compared to concentration-matched Mouse (MOPC-21) mAb IgG1 Isotype Control (FITC Conjugate) #97146 (left).

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Flow Cytometry

A. Solutions and Reagents

NOTE: Prepare solutions with reverse osmosis deionized (RODI) or equivalent grade water.

  1. 20X Phosphate Buffered Saline (PBS): (#9808) To prepare 1 L 1X PBS: add 50 ml 20X PBS to 950 ml dH2O, mix.
  2. Incubation Buffer: Dissolve 0.5 g Bovine Serum Albumin (BSA) (#9998) in 100 ml 1X PBS. Store at 4°C.

B. Immunostaining

  1. Count cells using a hemacytometer or alternative method.
  2. Aliquot 0.5-1x106 cells into each assay tube (by volume).
  3. Add 2-3 ml Incubation Buffer to each tube and rinse by centrifugation. Repeat.
  4. Resuspend cells in 100 µl of diluted primary antibody (prepared in incubation buffer at the recommended dilution).
  5. Incubate for 1 hr at room temperature.
  6. Wash by centrifugation in 2-3 ml incubation buffer.
  7. Resuspend cells in the appropriate volume of PBS and analyze on flow cytometer.

posted June 2017

Protocol Id: 1504

Application Dilutions
Flow Cytometry 1:20

Supplied in 10 mM NaH2PO4, 150 mM NaCl, 0.09% NaN3, 0.1% gelatin, pH7.2. This product is stable for 6 months when stored at 4ºC. Do not aliquot the antibody. Protect from light. Do not freeze.

NCAM1 (CD56) (MY31) Mouse mAb (FITC Conjugate) recognizes endogenous levels of total NCAM1 (CD56) protein. This antibody detects an epitope within the extracellular domain.

Species Reactivity:


This monoclonal antibody was purified from tissue culture supernatant via affinity chromatography. The purified antibody was conjugated under optimal conditions, with unreacted dye removed from the preparation.

This Cell Signaling Technology antibody is conjugated to FITC and tested in-house for direct flow cytometric analysis in human cells.

NCAM (neural cell adhesion molecule, CD56) is an adhesion glycoprotein with five extracellular immunoglobulin-like domains followed by two fibronectin type III repeats. Structural diversity is introduced by alternative splicing resulting in different cytoplasmic domains (1). NCAM mediates neuronal attachment, neurite extension and cell-cell interactions through homo and heterophilic interactions. PSA (polysialic acid) post-translationally modifies NCAM and increases the metastatic potential of small cell lung carcinoma, Wilms+ tumor, neuroblastoma and rhabdomyosarcoma (2). CD56 and CD16 are commonly used to identify NK cells although some cells with the T cell markers CD3 and CD4 also express CD56 (3).

  1. Cunningham, B. A. et al. (1987) Science 236, 799-806.
  2. Seidenfaden, R. et al. (2003) Mol. Cell. Biol. 23, 5908-5918.
  3. Robertson, M.J. and Ritz, J. (1990) Blood 76, 2421-2438.
Entrez-Gene Id
Swiss-Prot Acc.
For Research Use Only. Not For Use In Diagnostic Procedures.

Cell Signaling Technology is a trademark of Cell Signaling Technology, Inc.

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