Reactivity | HuSpecies Glossary |
Applications | Bioactivity, Enzyme Activity |
Format | Carrier-Free |
Additional Information | Biotinylated |
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Details of Functionality | Measured by its binding ability in a functional ELISA. When Human 5'-Nucleotidase/CD73 Antibody (Catalog # MAB5795) is coated at 1 μg/mL, 100 μL/well, Biotinylated Recombinant Human 5'-Nucleotidase/CD73 His-tag Avi-tag protein (Catalog # AVI5795) binds with an ED50 of 6-36 ng/mL. 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 >15,000 pmol/min/μg, as measured under the described conditions. |
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Source | Chinese Hamster Ovary cell line, CHO-derived human 5'-Nucleotidase/CD73 protein
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Accession # | |||||||
N-terminal Sequence | Trp27 |
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Protein/Peptide Type | Recombinant Enzymes |
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Purity | >95%, by SDS-PAGE under reducing conditions and visualized by silver stain. |
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Endotoxin Note | <0.10 EU per 1 μg of the protein by the LAL method. |
Dilutions |
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Theoretical MW | 61 kDa. Disclaimer note: The observed molecular weight of the protein may vary from the listed predicted molecular weight due to post translational modifications, post translation cleavages, relative charges, and other experimental factors. |
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SDS-PAGE | 60-66 kDa, under reducing conditions. |
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Publications |
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Storage | Use a manual defrost freezer and avoid repeated freeze-thaw cycles.
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Buffer | Supplied as a 0.2 μm filtered solution in Tris, NaCl, CaCl2 and Glycerol. |
Purity | >95%, by SDS-PAGE under reducing conditions and visualized by silver stain. |
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).
Adenosine Inhibits T cell Tumor Infiltration: KCa3.1, a New Anticancer Target By Yoskaly Lazo-Fernandez, PhD Role of Adenosine in the Tumor Microenvironment a Target for Cancer TherapyThe tumor microenvironment (TME) tends to be concentrated in the purine nucleoside adenosine, a direct resu... Read full blog post. |
CD73 (Cluster of differentiation 73, ecto-5'-nucleotidase) CD73 is a 70kD glycosyl-phosphatidylinositol (GPI)-anchored cell surface molecule that belongs to the 5'-nucleosidase family. It hydrolyzes extracellular nucleotides into membrane permeable nucleosides and is found as both a membrane-bound and soluble... Read full blog post. |
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