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Recombinant Human NCAM-1/CD56 Protein, CF

Bio-Techne includes R&D Systems | Catalog # 2408-NC

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2408-NC-050

Key Product Details

Source

NS0

Accession #

Conjugate

Unconjugated

Applications

Bioactivity

Product Specifications

Source

Mouse myeloma cell line, NS0-derived human NCAM-1/CD56 protein
Human NCAM-1
(Leu20-Pro603)
Accession # NP_001070150
R Human NCAM-1
(Glu636-Asn741)
Accession # NP_001070150
N-terminus C-terminus

Purity

>90%, by SDS-PAGE visualized with Silver Staining and quantitative densitometry by Coomassie® Blue Staining.

Endotoxin Level

<0.10 EU per 1 μg of the protein by the LAL method.

N-terminal Sequence Analysis

Leu20

Predicted Molecular Mass

76.5 kDa

SDS-PAGE

105 kDa, reducing conditions

Activity

Measured by the ability of the immobilized protein to support the adhesion of Neuro‑2A mouse neuroblastoma cells.

When 5 x 104 cells/well are added to recombinant human NCAM-1 coated plates, cell adhesion is enhanced in a dose dependent manner after 1 hour incubation at 37 °C.  The ED50 for this effect is 0.5-3 μg/mL. 

Optimal dilutions should be determined by each laboratory for each application.

Formulation, Preparation and Storage

2408-NC
Formulation Lyophilized from a 0.2 μm filtered solution in Tris and NaCl.
Reconstitution
Reconstitute at 100 μg/mL in sterile PBS.

Reconstitution Buffer Available:
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Shipping The product is shipped at ambient temperature. Upon receipt, store it immediately at the temperature recommended below.
Stability & Storage Use a manual defrost freezer and avoid repeated freeze-thaw cycles.
  • 12 months from date of receipt, -20 to -70 °C as supplied.
  • 1 month, 2 to 8 °C under sterile conditions after reconstitution.
  • 3 months, -20 to -70 °C under sterile conditions after reconstitution.

Background: NCAM-1/CD56

Neural cell adhesion molecule 1 (NCAM-1) is a multifunctional member of the Ig superfamily. It belongs to a family of membrane-bound glycoproteins that are involved in Ca++ independent cell matrix and homophilic or heterophilic cell-cell interactions. NCAM-1 specifically binds to heparan sulfate proteoglycans (1), the extracellular matrix protein agrin (2), and several chondroitin sulfate proteoglycans that include neurocan and phosphocan (3). There are three main forms of human NCAM-1 that arise by alternate splicing. These are designated NCAM-120/NCAM-1 (761 amino acids [aa]), NCAM‑140 (848 aa), and NCAM-180 (1120 aa). NCAM-120 is GPI-linked, while NCAM‑140 and NCAM-180 are type I transmembrane glycoproteins (4-6). Additional alternate splicing adds considerable diversity to all three forms, and extracellular proteolytic processing is possible for NCAM-180 (7, 8). NCAM-1 is synthesized as a 761 aa preproprecursor that contains a 19 aa signal sequence, a 722 aa GPI-linked mature region, and a 20 aa C-terminal prosegment (4). The molecule contains five C-2 type Ig-like domains and two fibronectin type-III domains. Human to mouse, NCAM-1 is 93% aa identical. NCAM-1 appears to be highly sialylated. The polysialyation of NCAM-1 reduces its adhesive property and increases its neurite outgrowth promoting features (9). NCAM-1 in the adult brain shows a decline of sialylation relative to earlier developmental periods. In regions that retain a high degree of neuronal plasticity, however, the adult brain continues to express polysialylation-NCAM-1, suggesting sialylation of NCAM-1 is involved in regenerative processes and synaptic plasticity (10-13).

References

  1. Burg, M.A. et al. (1995) J. Neurosci. Res. 41:49.
  2. Storms, S.D. and U. Rutishauser (1998) J Biol. Chem. 273:27124.
  3. Margolis, R.K. et al. (1996) Perspect. Dev. Neurobiol. 3:273.
  4. Dickson, G. et al. (1987) Cell 50:1119.
  5. Lanier, L.L. et al. (1991) J. Immunol. 146:4421.
  6. Hemperly, J.J. et al. (1990) J. Mol. Neurosci. 2:71.
  7. Rutishauser, U.and C. Goridis (1986) Trends Genet. 2:72.
  8. Vawter, M.P. et al. (2001) Exp. Neurol. 172:29.
  9. Rutihauser, U. (1990) Adv. Exp. Med. Biol. 265:179.
  10. Becker, C.G. et al. (1996) J. Neurosci. Res. 45:143.
  11. Doherty, P. et al. (1995) J. Neurobiol. 26:437.
  12. Eckardt, M. et al. (2000) J. Neurosci. 20:5234.
  13. Muller, D. et al. (1996) Neuron 17:413.

Long Name

Neural Cell Adhesion Molecule

Alternate Names

CD56, NCAM1

Entrez Gene IDs

4684 (Human); 17967 (Mouse); 24586 (Rat)

Gene Symbol

NCAM1

UniProt

Additional NCAM-1/CD56 Products

Product Documents for Recombinant Human NCAM-1/CD56 Protein, CF

Certificate of Analysis

To download a Certificate of Analysis, please enter a lot number in the search box below.

Note: Certificate of Analysis not available for kit components.

Product Specific Notices for Recombinant Human NCAM-1/CD56 Protein, CF

For research use only

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