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Your Position: Home > Protein > CD39 > CD9-H82E8

Biotinylated Human CD39 (R138A, M139A, E142K) Protein, His,Avitag™ (active enzyme)

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  • Synonym
    CD39,ENTPD1,NTPDase 1,Entpd1,Ecto-ATPDase 1,Ecto-ATPase 1
  • Source
    Biotinylated Human CD39 (R138A, M139A, E142K) Protein, His,Avitag(CD9-H82E8) is expressed from human 293 cells (HEK293). It contains AA Thr 38 - Val 478 (Accession # P49961-1 (R138A, M139A, E142K)).
  • Molecular Characterization
    CD39 Structure

    This protein carries a polyhistidine tag at the C-terminus, followed by an Avi tag (Avitag™)

    The protein has a calculated MW of 53.9 kDa. The protein migrates as 65-80 kDa under reducing (R) condition (SDS-PAGE) due to glycosylation.

  • Labeling
    Biotinylation of this product is performed using Avitag™ technology. Briefly, the single lysine residue in the Avitag is enzymatically labeled with biotin.
  • Protein Ratio
    Passed as determined by the HABA assay / binding ELISA.
  • Endotoxin
    Less than 1.0 EU per μg by the LAL method.
  • Purity

    >95% as determined by SDS-PAGE.

  • Formulation

    Lyophilized from 0.22 μm filtered solution in 20 mM Tris,150 mM NaCl,pH8.0 with trehalose as protectant.

    Contact us for customized product form or formulation.

  • Reconstitution

    Please see Certificate of Analysis for specific instructions.

    For best performance, we strongly recommend you to follow the reconstitution protocol provided in the CoA.

  • Storage

    For long term storage, the product should be stored at lyophilized state at -20°C or lower.

    Please avoid repeated freeze-thaw cycles.

    This product is stable after storage at:

    1. -20°C to -70°C for 12 months in lyophilized state;
    2. -70°C for 3 months under sterile conditions after reconstitution.
SDS-PAGE
CD39 SDS-PAGE

Biotinylated Human CD39 (R138A, M139A, E142K) Protein, His,Avitag on SDS-PAGE under reducing (R) condition. The gel was stained with Coomassie Blue. The purity of the protein is greater than 95%.

Bioactivity-ELISA
 CD39 ELISA

Immobilized Biotinylated Human CD39 (R138A, M139A, E142K) Protein, His,Avitag (Cat. No. CD9-H82E8) at 1 μg/mL (100 μL/well)on streptavidin precoated (Cat. No. STN-N5116) (0.5 μg/well) plate can bind Anti-CD39 Antibody, Human IgG1 with a linear range of 0.1-4 ng/mL (QC tested).

Bioactivity

Measured by its ability to hydrolyze the 5’-phosphate group from the substrate adenosine-5’-triphosphate (ATP). The specific activity is > 8000 pmol/min/μg (QC tested).

  • Background
    CD39 is also known as Ectonucleoside triphosphate diphosphohydrolase 1, ENTPD1, NTPDase 1, Ecto-ATPDase 1, in the nervous system, could hydrolyze ATP and other nucleotides to regulate purinergic neurotransmission. Could also be implicated in the prevention of platelet aggregation by hydrolyzing platelet-activating ADP to AMP. Hydrolyzes ATP and ADP equally well. NTPDase-1 was originally described as CD39, a B lymphocyte cell surface marker, but it is also present on the surface of natural killer cells, T cells, and some endothelial cells.Regulatory T cells(Tregs) mediate immunosuppression through multiple, non-redundant, cell-contact dependent and independent mechanisms, a growing body of evidence suggests an important role for the CD39-CD73-adenosine pathway. CD39 ectonucleotidase is the rate-limiting enzyme of a cascade leading to the generation of suppressive adenosine that alters CD4 and CD8 T cell and natural killer cell antitumor activities.
  • Clinical and Translational Updates

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  • Number of Drugs in Clinical Trials:9 Details
  • Latest Research Phase:Phase 2 Clinical

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