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Your Position: 홈 > Protein > PD-L1 > PD1-HP2H3

PE-Labeled Human PD-L1 / B7-H1 (19-238) Protein, His TagStar Staining

INTRODUCTION
QC & Assay Protocol
Citation & Background
  • Synonym
    PD-L1,CD274,B7-H1,PDCD1L1,PDCD1LG1
  • Source
    PE-Labeled Human PD-L1 (19-238) Protein, His Tag(PD1-HP2H3) is expressed from human 293 cells (HEK293). It contains AA Phe 19 - Arg 238 (Accession # Q9NZQ7-1).
    Predicted N-terminus: Phe 19
  • Molecular Characterization

    This protein carries a polyhistidine tag at the C-terminus.

    The protein has a calculated MW of 39.5 kDa.

  • Conjugate

    PE

    Excitation Wavelength: 488 nm / 561 nm

    Emission Wavelength: 575 nm

  • Endotoxin
    Less than 1.0 EU per μg by the LAL method.
  • Purity

    >90% as determined by SDS-PAGE.

  • Formulation

    Lyophilized from 0.22 μm filtered solution in PBS, 0.2% BSA, 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 protect from light and 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.
Evaluation of CAR expression
FACS analysis of PE-Labeled Human PD-L1 (19-238) Protein binding cell surface Human PD-1
PD-L1 CAR_T

5e5 of HEK293/Human PD-1 Stable Cell Line were stained with 100 μL of 1:10 dilution (10 μL stock solution in 100 μL FACS buffer) of PE-Labeled Human PD-L1 (19-238) Protein, His Tag (Cat. No. PD1-HP2H3) and negative control protein respectively(Fig. C and B), and non-transfected 293 cells were used as a control (Fig. A). PE signal was used to evaluate the binding activity (QC tested).

  • Background
    Programmed cell death 1 ligand 1 (PDL1) is also known as B7-H, B7H1, MGC142294, MGC142296, PD-L1, PDCD1L1 and PDCD1LG1,which is a member of the growing B7 family of immune molecules and is involved in the regulation of cellular and humoral immune responses.PDL1 is a cell surface immunoglobulin superfamily with two Ig-like domains within the extracellular region and a short cytoplasmic domain. This protein is broadly expressed in the majority of peripheral tissues as well as hematopoietic cells. Interaction between PDL1 and its receptors belonging to the CD28 family of molecules provide both stimulatory and inhibitory signals in regulating T cell activation and tolerance. PDL1 may inhibit ongoing T-cell responses by inducing apoptosis and arresting cell-cycle progression.
  • Clinical and Translational Updates

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