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Biotinylated Cynomolgus Her2 / ErbB2 Protein, Fc,Avitag™

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  • Synonym
    ERBB2,CD340,HER-2,neu,HER2,MLN19,NEU,NGL,TKR1
  • Source
    Biotinylated Cynomolgus Her2 Protein, Fc,Avitag(HE2-C82F3) is expressed from human 293 cells (HEK293). It contains AA Thr 23 - Thr 652 (Accession # XP_005584091.2).
    Predicted N-terminus: Thr 23
  • Molecular Characterization
    Her2 Structure

    This protein carries a human IgG1 Fc tag at the C-terminus, followed by an Avi tag (Avitag™).

    The protein has a calculated MW of 97.5 kDa. The protein migrates as 110-150 kDa when calibrated against Star Ribbon Pre-stained Protein Marker 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

    >90% as determined by SDS-PAGE.

  • 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 12 months in lyophilized state;
    2. -70°C for 3 months under sterile conditions after reconstitution.
SDS-PAGE
Her2 SDS-PAGE

Biotinylated Cynomolgus Her2 Protein, Fc,Avitag on SDS-PAGE under reducing (R) condition. The gel was stained with Coomassie Blue. The purity of the protein is greater than 90% (With Star Ribbon Pre-stained Protein Marker).

Bioactivity-ELISA
 Her2 ELISA

Immobilized Trastuzumab Biosimilar at 1 μg/mL (100 μL/well) can bind Biotinylated Cynomolgus Her2 Protein, Fc,Avitag (Cat. No. HE2-C82F3) with a linear range of 0.1-4 ng/mL (QC tested).

 Her2 ELISA

Immobilized Bispecific Antibody (Her2 × Her3) at 1 μg/mL (100 μL/well) can bind Biotinylated Cynomolgus Her2 Protein, Fc,Avitag (Cat. No. HE2-C82F3) with a linear range of 0.2-8 ng/mL (Routinely tested).

 Her2 ELISA

Immobilized Biotinylated Cynomolgus Her2 Protein, Fc,Avitag (Cat. No. HE2-C82F3) at 1 μg/mL (100 μL/well) on streptavidin precoated (STN-N5116) can bind Trastuzumab Biosimilar with a linear range of 0.1-8 ng/mL (Routinely tested).

  • Background
    Human Epidermal growth factor Receptor 2 (HER2) is also called ERBB2, HER-2,HER-2 /neu, NEU, NGL,TKR1 and c-erb B2,and is a protein giving higher aggressiveness in breast cancers. It is a member of the ErbB protein family, more commonly known as the epidermal growth factor receptor family. HER2 is a cell membrane surface-bound receptor tyrosine kinase and is normally involved in the signal transduction pathways leading to cell growth and differentiation. HER2 is thought to be an orphan receptor, with none of the EGF family of ligands able to activate it. Approximately 30% of breast cancers have an amplification of the HER2 gene or overexpression of its protein product. Overexpression of this receptor in breast cancer is associated with increased disease recurrence and worse prognosis. HER2 appears to play roles in development, cancer, communication at the neuromuscular junction and regulation of cell growth and differentiation .
  • Clinical and Translational Updates

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