Alexa Fluor™ 488-Labeled Monoclonal Anti-G4S linker Antibody, Rabbit IgG (016) (0.03% Proclin)

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Qty.
G4S-AFYP1-25tests
¥2400.00
G4S-AFYP1-200tests
¥12000.00
合计0件 产品金额¥ 0

产品详情

  • 抗体来源(Source)

    Monoclonal Anti-G4S linker Antibody, Rabbit IgG (016) is a rabbit monoclonal antibody recombinantly expressed from human 293 cells (HEK293), which provides higher batch consistency and long term security of supply. It shows superior performance in flow cytometry assays with higher affinity and better specificity.

  • 应用(Application)

    Flow Cytometry (Evaluation of cell surface expressed CARs of varying specificity containing a G4S linker within the scFv of the extracellular domain).

  • 克隆号(Clone)

    016

  • 种属(Species)

    Rabbit

  • 亚型(Isotype)

    Rabbit IgG | Rabbit Kappa

  • 特异性(Specificity)

    It can specifically recognize proteins or ScFv containing (G3S)n or (G4S)n linkers, where n = 2, 3, 4... That is, it can recognize linkers with a minimum length of 2 repeats for both (G3S)n and (G4S)n.

  • 偶联(Conjugate)

    AF488

    Excitation Wavelength: 488 nm

    Emission Wavelength: 517 nm

  • 推荐稀释比(Recommended Dilution)

    1:50

  • 制剂(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.

  • 重构方法(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.

  • 存储(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.
    3. 2-8 °C for 12 months after reconstitution.
  • 质量管理控制体系(QMS)

    1. 质量管理体系(ISO, GMP)
    2. 质量优势
    3. 质控流程

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数据展示

  • 活性(Bioactivity)-FACS

     G4S linker FACS

    Flow cytometric analysis of Anti-MSLN CAR-293 cells staining with Alexa Fluor 488-Labeled Monoclonal Anti-G4S linker Antibody, Rabbit IgG (016) (Cat. No. G4S-AFYP1) at 1:50 dilution (2 μL of the antibody stock solution corresponds to labeling of 1e6 cells in a final volume of 100 µL), compared with Isotype control antibody. Alexa Fluor 488 signal was used to evaluate the binding activity (QC tested).​

    Protocol
  •  G4S linker FACS

    Non-specificity of Alexa Fluor 488-Labeled Monoclonal Anti-G4S linker Antibody, Rabbit IgG (016) (Cat. No. G4S-AFYP1) binding to CD3+ cells present in human PBMC. 5e5 of human PBMCs were simultaneously stained with PE anti-CD3 antibody and Alexa Fluor 488-Labeled Monoclonal Anti-G4S linker Antibody, Rabbit IgG (016) (2 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 PE and Alexa Fluor 488 positive signals was used to evaluate the non-specific binding activity to human CD3+ cells (QC tested).​

    Protocol

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背景介绍

The poly-Glycine-Serine (G4S) linker is a type of flexible, unstructured synthetic peptide linker sequence 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 linker itself consists of a core pentapeptide sequence, Gly-Gly-Gly-Gly-Ser, that is repeated and commonly found as either a 15-mer (G4S)3 or20-mer(G4S) 4 within scFv-based CARs and scFv fragments. The linker sequence length plays a role in controlling scFv stability and the noncovalent association between the VH and VL domains.

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