Skip to content


You currently have no items in your basket.

Total (excl. vat) £0.000
View basket & checkout


CD73 is known as ecto-5-prime-nucleotidase. The enzyme consists of a dimer of 2 identical 70-kD subunits bound by a glycosyl phosphatidyl inositol (GPI) linkage to the external face of the plasma membrane. The enzyme is used as a marker of lymphocyte differentiation. CD73 works with its upstream signaling molecule CD39 to convert extracellular ATP to adenosine. Adenosine in tumor microenvironment can help regulatory T cells suppress and shut down immune activity. Tumor cells can also express CD73 which can promote the release of adenosine, thereby reducing antitumor activity.

An article published in Nature Medicine identifed CD73 as a specific immunotherapeutic target to improve antitumor immune responses to immune checkpoint therapy in glioblastoma multiforme. The researchers pointed out that anti-CD73 antibodies have achieved good results in preclinical and early clinical studies, and proposed a strategy for CD73, PD-1 and CTLA-4 blocking combined therapy for glioblastoma.

ACROBiosystems provides CD73 proteins with high enzyme activity, which can help expedite your anti-CD73 mAb drug development. The high purity and bioactivity of these CD73 proteins have been verified by HPLC, BLI, SPR and ELISA. Protocols are provided for free. You can send email to to request.

Product List

Cat. No.SpeciesTag
CD3-H52H7HumanHis tag
CD3-H82E3HumanHis Tag & Avi Tag
CD3-M52H9MouseHis tag

Product Features

  • Enzyme activity Measured by its ability to hydrolyze the 5’-phosphate group from the substrate adenosine-5’-monophosphate (AMP). The specific activity is > 37,000 pmol/min/μg.
  • Purity of CD73 protein is greater than 90% as determined by HPLC. 

Fig.1 The purity of Human CD73, His Tag (HPLC-verified) (Cat. No. CD3-H52H7) was greater than 90% as determined by SEC-HPLC.