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Recombinant Cynomolgus 5'-Nucleotidase/CD73 His Protein, CF

Catalog # 10173-EN | R&D Systems, Inc. a Bio-Techne Brand
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Structure / Form





Enzyme Activity

Product Specifications


Chinese Hamster Ovary cell line, CHO-derived cynomolgus monkey 5'-Nucleotidase/CD73 protein
with a C-terminal 6-His tag


>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


Predicted Molecular Mass

59 kDa


57-75 kDa


Measured by its ability to hydrolyze the 5’-phosphate group from the substrate adenosine-5’-monophosphate (AMP). The orthophosphate product is measured by a Malachite Green Phosphate Detection Kit (Catalog # DY996).
The specific activity is >6500 pmol/min/μg, as measured under the described conditions.

Formulation, Preparation and Storage

Formulation Supplied as a 0.2 μm filtered solution in Tris, NaCl, CaCl2 and Glycerol.
Shipping The product is shipped with polar packs. Upon receipt, store it immediately at the temperature recommended below.
Stability & Storage Use a manual defrost freezer and avoid repeated freeze-thaw cycles.
  • 6 months from date of receipt, -20 to -70 °C as supplied.
  • 3 months, -20 to -70 °C under sterile conditions after opening.

Background: 5'-Nucleotidase/CD73

CD73, known as ecto-5'-Nucleotidase, converts extracellular nucleoside 5' monophosphates to nucleosides, with AMP as its preferred substrate (1). CD73 is a zinc-dependent, 70 kDa homodimeric enzyme bound to the cell membrane through a glycosyl phophatidylinositol (GPI) anchor. It is composed of an N-terminal domain containing metal binding sites linked via small hinge region to a C-terminal domain containing the substrate binding site and dimerization interface (2). It is expressed by most cell types (3) and is widely expressed in tumor cell lines as well as upregulated in cancerous tissues (4,5). CD73 is a key enzyme responsible for a rate-limiting step in the generation of extracellular adenosine. Adenosine is a molecule that signals through activation of purinergic receptors and results in an immunosuppressive role in the tumor microenvironment (4,6). CD73 has been implicated in many pathological processes including immunomodulation and inflammation (7,8) tumor growth and metastasis (9-13) making CD73 a potential drug target in cancer. Targeting CD73 inhibition has resulted in numerous reports of favorable antitumor effects (4,5,12). Consequently, therapeutic approaches have been tested using knockdown, gene silencing and anti-CD73 therapies (11,14) as well as small molecule inhibitors (14,15).


  1. Zimmermann, H. et al. (2012) Purinergic Signal. 8:437.
  2. Knapp, K. et al. (2012) Structure. 20:2161.
  3. Resta, R. et al. (1998) Immunol. Rev. 161:95.
  4. Jin, D. et al. (2010) Cancer Res. 70:2245.
  5. Zhang, B. (2010) Cancer Res. 70:6407.
  6. Pilcher, M. et al. (2003) J. Biol. Chem. 278:13468.
  7. Antonioli, L. et al. (2012) Curr. Drug Targets 13:842.
  8. Eltzchig, H. K. et al. (2012) N. Engl. J. Med. 367:2322.
  9. Bavaresco, L. et al. (2008) Mol. Cell Biochem. 319:61.
  10. Yegutkin, G. G. et al. (2011) Eur. J. Immunol. 41:1231.
  11. Stagg, J. et al. (2012) Cancer Res. 72:2190.
  12. Ghalamfarsa, G. et al. (2019) Expert Opin. Ther. Targets. 23:127.
  13. Gao, Z. W. et al. (2014) Biomed. Res. Int. [PMID 25126561].
  14. Young, A. et al. (2014) Cancer Discov. 4:879.
  15. McManus, J. et al. (2018) SLAS Discov. 23:264.

Alternate Names

5-NT, CD73, E5NT, eNT, NT5E, NTE

Entrez Gene IDs

4907 (Human); 23959 (Mouse); 58813 (Rat); 102114976 (Cynomolgus Monkey)

Gene Symbol



Product Documents for Recombinant Cynomolgus 5'-Nucleotidase/CD73 His Protein, CF

Certificate of Analysis

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Note: Certificate of Analysis not available for kit components.

Product Specific Notices for Recombinant Cynomolgus 5'-Nucleotidase/CD73 His Protein, CF

For research use only

Setting the standard in quality research reagents