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Your Position: Home > Protein > PD-1 > PD1-H5257

Human PD-1 / PDCD1 Protein, Fc Tag, low endotoxin (MALS Verified)

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INTRODUCTION
QC & Assay Protocol
Citation & Background
  • Synonym
    PDCD1,PD1,CD279,SLEB2
  • Source
    Human PD-1 Protein, Fc Tag(PD1-H5257) is expressed from human 293 cells (HEK293). It contains AA Leu 25 - Gln 167 (Accession # NP_005009.2).
    Predicted N-terminus: Leu 25
    Request for sequence
  • Molecular Characterization
    PD-1 Structure

    This protein carries a human IgG1 Fc tag at the C-terminus

    The protein has a calculated MW of 42.1 kDa. The protein migrates as 56-66 kDa under reducing (R) condition (SDS-PAGE) due to glycosylation.

  • Endotoxin
    Less than 0.1 EU per μg by the LAL method.
  • Purity

    >95% as determined by SDS-PAGE.

    >90% as determined by SEC-MALS.

  • Formulation

    Lyophilized from 0.22 μm filtered solution in PBS, pH7.4 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 24 months in lyophilized state;
    2. -70°C for 24 months under sterile conditions after reconstitution.
SDS-PAGE
PD-1 SDS-PAGE

Human PD-1 Protein, Fc Tag on SDS-PAGE under reducing (R) condition. The gel was stained with Coomassie Blue. The purity of the protein is greater than 95%.

SEC-MALS
PD-1 MALS images

The purity of Human PD-1 Protein, Fc Tag (Cat. No. PD1-H5257) is more than 90% and the molecular weight of this protein is around 105-145 kDa verified by SEC-MALS.

Report
Bioactivity-ELISA
PD-1 ELISA

Immobilized Biotinylated Human PD-L1, Avitag,His Tag (Cat. No. PD1-H82E5) at 1 μg/mL (100 μL/well) on streptavidin precoated (0.5 μg/well) plate, can bind Human PD-1 Protein, Fc Tag (Cat. No. PD1-H5257) with a linear range of 0.1-3 ng/mL (QC tested).

Protocol
PD-1 BATCH ELISA
Report
PD-1 ELISA

Immobilized Human PD-1 Protein, Fc Tag (Cat. No. PD1-H5257) at 2 μg/mL (100 μL/well) can bind Biotinylated Human PD-L2, Fc,Avitag (Cat. No. PD2-H82F6) with a linear range of 0.5-16 ng/mL (Routinely tested).

Protocol
PD-1 ELISA

Immobilized Biotinylated Human PD-L2, Avitag,His Tag (Cat. No. PD2-H82E8) at 1 μg/mL (100 μL/well) on streptavidin precoated (0.2 μg/well) plate, can bind Human PD-1 Protein, Fc Tag (Cat. No. PD1-H5257) with a linear range of 0.1-1 ng/mL (Routinely tested).

Protocol
PD-1 ELISA

Serial dilutions of nivolumab were added into Human PD-1 Protein, Fc Tag (Cat. No. PD1-H5257): Biotinylated Human PD-L1, Fc,Avitag,His Tag (Cat. No. PD1-H82F3) binding reactions. The half maximal inhibitory concentration (IC50) is 0.5381 μg/mL (Routinely tested).

Protocol
Bioactivity-SPR
PD-1 SPR

Human PD-1 Protein, Fc Tag (Cat. No. PD1-H5257) captured on CM5 chip via anti-human IgG Fc antibody, can bind Human PD-L1, His Tag (Cat. No. PD1-H5229) with an affinity constant of 3.6 μM as determined in a SPR assay (Biacore T200) (Routinely tested).

Protocol
Bioactivity-BLI
PD-1 BLI

Loaded Human PD-1 Protein, Fc Tag (Cat. No. PD1-H5257) on ProteinA Biosensor, can bind Human PD-L1, His Tag (Cat. No. PD1-H5229) with an affinity constant of 5.3 μM as determined in BLI assay (ForteBio Octet Red96e) (Routinely tested).

Protocol
PD-1 BLI

Loaded Human PD-1 Protein, Fc Tag (Cat. No. PD1-H5257) on Protein A Biosensor, can bind Human PD-L2 Protein, His Tag (Cat. No. PD2-H5220) with an affinity constant of 0.45 μM as determined in BLI assay (ForteBio Octet Red96e) (Routinely tested).

Protocol
Bioactivity-FACS
PD-1 FACS

Flow Cytometry assay shows that Human PD-1 Protein, Fc Tag (Cat. No. PD1-H5257) can bind to 293 cell overexpressing human PD-L1. The concentration of PD-1 used is 1 μg/mL (Routinely tested).

Protocol
  • Background
    Programmed cell death protein 1 (PD-1) is also known as CD279 and PDCD1, is a type I membrane protein and is a member of the extended CD28/CTLA-4 family of T cell regulators. PDCD1 is expressed on the surface of activated T cells, B cells, macrophages, myeloid cells and a subset of thymocytes. PD-1 has two ligands, PD-L1 and PD-L2, which are members of the B7 family. PD-L1 is expressed on almost all murine tumor cell lines, including PA1 myeloma, P815 mastocytoma, and B16 melanoma upon treatment with IFN-γ. PD-L2 expression is more restricted and is expressed mainly by DCs and a few tumor lines. PD1 inhibits the T-cell proliferation and production of related cytokines including IL-1, IL-4, IL-10 and IFN-γ by suppressing the activation and transduction of PI3K/AKT pathway. In addition, coligation of PD1 inhibits BCR-mediating signal by dephosphorylating key signal transducer. In vitro, treatment of anti-CD3 stimulated T cells with PD-L1-Ig results in reduced T cell proliferation and IFN-γ secretion. Monoclonal antibodies targeting PD-1 that boost the immune system are being developed for the treatment of cancer.
  • Clinical and Translational Updates

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