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Recombinant Cynomolgus Monkey CD39/ENTPD1 His Protein, CF

Bio-Techne includes R&D Systems | Catalog # 11092-EN

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Enzyme Activity

Product Specifications


Mouse myeloma cell line, NS0-derived cynomolgus monkey CD39/ENTPD1 protein
Thr45-Val485, with a C-terminal 6-His tag


>95%, 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

51 kDa


60-77 kDa, under reducing conditions


Measured by its ability to hydrolyze the 5’-phosphate groups from the substrate adenosine-5’-triphosphate (ATP). The orthophosphate product is measured by a Malachite Green Phosphate Detection Kit (Catalog # DY996).
The specific activity is >15,000 pmol/min/μg, as measured under the described conditions.

Scientific Data Images for Recombinant Cynomolgus Monkey CD39/ENTPD1 His Protein, CF

Recombinant Cynomolgus Monkey CD39/ENTPD1 His-tag Protein SDS-PAGE.

2 μg/lane of Recombinant Cynomolgus Monkey CD39/ENTPD1 His-tag Protein (Catalog # 11092-EN) was resolved with SDS-PAGE under reducing (R) and non-reducing (NR) conditions and visualized by Coomassie® Blue staining, showing bands at 60-77 kDa.

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 dry ice or equivalent. 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: CD39/ENTPD1

CD39, also known as ectonucleoside triphosphate diphosphohydrolase-1 (NTPDase-1), is the prototypical member of the NTPDase family. CD39 is a metal-dependent, homodimeric enzyme bound to the cell membrane through two transmembrane domains present at each termini (1-3). The extracellular loop contains two major domains with an active site and apyrase conserved regions (ACRs) and changes conformation dynamically during catalysis (1-4). Although first described as a B lymphocyte cell surface marker (5), CD39 is also present on the surface of natural killer cells, T cells, and some endothelial cells (6). CD39 hydrolyzes the beta - and gamma  phosphate residues of nucleotides to terminate purinergic signaling and is uniquely capable of processive hydrolysis of extracellular ATP to AMP without release of the ADP intermediate (3, 7, 8) as the initial rate-limiting steps in the production of extracellular adenosine (9). CD39 functional activity leads to interest in CD39 as a pharmaceutical therapeutic target for several disease models including inflammation, cancer, and immunosuppression (3,4,9,10). Recombinant cynomolgus NTPDase-1 was expressed as a protein lacking its N- and C-terminal transmembrane domains, resulting in the secretion of the soluble recombinant NTPDase-1 ectodomain.


  1. Grinthal, A. and G. Guidotti. (2004) Biochemistry 43:13849.
  2. Robson, S.C. et al. (2006) Purinergic Signal. 2:409.
  3. Zebisch, M. et al. (2012) J. Mol. Biol. 415:288.
  4. Zimmermann, H. (2021) Purinergic Signal. 17:117.
  5. Rowe, M. et al. (1982) Int. J. Cancer 29:373.
  6. Kansas, G.S. et al. (1991) J. Immunol. 146:2235.
  7. Kishore, B.K. et al. (2005) Am. J. Physiol. Renal Physiol. 288:F1032.
  8. Laliberte, J. F. and A.R Beaudoin (1983) Biochim. Biophys. Acta 742:9.
  9. Moesta, A.K. et al. (2020) Nat. Rev. Immunol. 20:739.
  10. Augustin, R.C. et al. (2022) J. Immunother. Cancer. 10:e004089.

Long Name

Ecto-Nucleoside Triphosphate Diphosphohydrolase 1

Alternate Names

ADPase, ATP-diphosphatase, CD39, ENTPD1, NTPD1

Entrez Gene IDs

953 (Human); 12495 (Mouse); 64519 (Rat); 102132860 (Cynomolgus Monkey)

Gene Symbol



Additional CD39/ENTPD1 Products

Product Documents for Recombinant Cynomolgus Monkey CD39/ENTPD1 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 Monkey CD39/ENTPD1 His Protein, CF

For research use only