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Your Position: Home > Antibody > 218 linker > 218-AFFMY3

Alexa Fluor 488-Labeled Monoclonal Anti-Whitlow 218 linker Antibody, Rabbit IgG (P3C09) (0.03% Proclin)

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  • Source
    Alexa Fluor 488-Labeled Monoclonal Anti-Whitlow 218 linker Antibody, Rabbit IgG (P3C09) is a monoclonal antibody recombinantly expressed from HEK293 cells, which provides higher batch consistency and long term security of supply.
  • Application
    Flow Cytometry (Evaluation of CAR and SCFV containing 218 linker on Human cells).
  • Clone
    P3C09
  • Species
    Rabbit
  • Isotype
    Rabbit IgG | Rabbit Kappa
  • Specificity
    This product is a specific antibody specifically reacts with CAR or scFv containing the 218 linker sequence.
  • Reactivity

    Human

  • Immunogen

    Purified 218 linker protein.

  • Conjugate

    AF488

    Excitation Wavelength: 488 nm

    Emission Wavelength: 517 nm

  • Recommended Dilution
    1:25
  • Formulation

    Lyophilized from 0.22 μm filtered solution in PBS, pH7.4, 0.03% Proclin300 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 24 months in lyophilized state;
    2. -70°C for 12 months after reconstitution.
Bioactivity-FACS
 218 linker FACS

Flow cytometric analysis of Anti-BCMA (C11D5.3) CAR 293 cells staining with Alexa Fluor 488-Labeled Monoclonal Anti-Whitlow 218 linker Antibody, Rabbit IgG (P3C09) (0.03% Proclin) (Cat. No. 218-AFFMY3) at 1:25 dilution (4 μL of the antibody stock solution corresponds to labeling of 1e6 cells in a final volume of 100 µL). Alexa Fluor 488 signal was used to evaluate the binding activity (QC tested).

 218 linker FACS

Non-specificity of Alexa Fluor 488-Labeled Monoclonal Anti-Whitlow 218 linker Antibody, Rabbit IgG (P3C09) (0.03% Proclin) (Cat. No. 218-AFFMY3) binding to CD3+ cells present in human PBMC. 5e5 of human PBMCs were simultaneously stained with PE-labeled anti-CD3 antibody and Alexa Fluor 488-Labeled Monoclonal Anti-Whitlow 218 linker Antibody (4 μL of the antibody stock solution corresponds to labeling of 5e5 cells in a final volume of 100 µL) and washed and then analyzed with FACS. Both Alexa Fluor 488 and PE positive signals was used to evaluate the non-specific binding activity to human CD3+ cells (QC tested).

  • Background
    The whitlow/218 linker, with the sequence GSTSGSGKPGSGEGSTKG, is a commonly used synthetic peptide linker. Whitlow/218 linker often leveraged to connect the variable heavy (VH) domain and variable light (VL) domain of single-chain variable fragments (scFvs) and chimeric antigen receptors (CARs) that utilize an extracellular domain scFv for target antigen recognition. The scFv containing the 218 linker showed reduced aggregation and was found to be more stable to proteolysis in vitro.
  • Clinical and Translational Updates

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