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Your Position: > Protein > Her2 > HE2-H822R

Biotinylated Human Her2 / ErbB2 Protein, His Tag, ultra sensitivity (primary amine labeling, long spacer)

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Based on the high binding affinity between biotin-streptavidin systems, our Streptavidin series products are recommended to use together with biotinylated proteins to get lower non-specific binding results in a shorter time.

  • Synonym
    ERBB2,CD340,HER-2,neu,HER2,MLN19,NEU,NGL,TKR1
  • Source
    MABSol® Biotinylated Human Her2, His Tag, primary amine labeling, long spacer (HE2-H822R) is expressed from human HEK293 cells. It contains AA Thr 23 - Thr 652 (Accession # P04626-1). It is the biotinylated form of Human Her2, His Tag (Cat. No. HE2-H5225).
    Predicted N-terminus: Thr 23
  • Molecular Characterization
    Her2 Structure

    This protein carries a polyhistidine tag at the C-terminus

    The protein has a calculated MW of 70.2 kDa. The protein migrates as 85-100 kDa under reducing (R) condition (SDS-PAGE) due to glycosylation.

  • Labeling
    The primary amines in the side chains of lysine residues and the N-terminus of the protein are conjugated with biotins using standard chemical labeling method. A specially optimized long-spacer biotin reagent (32.5 angstroms) is used in this product to minimize potential steric hindrance.
  • Protein Ratio
    Passed as determined by the HABA assay / binding ELISA.
  • Endotoxin
    Less than 1.0 EU per μg by the LAL method.
  • Purity

    >95% 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 24 months in lyophilized state;
    2. -70°C for 12 months under sterile conditions after reconstitution.
SDS-PAGE
Her2 SDS-PAGE

Biotinylated Human Her2, His Tag, primary amine labeling, long spacer on SDS-PAGE under reducing (R) condition. The gel was stained with Coomassie Blue. The purity of the protein is greater than 95%.

Bioactivity-ELISA
 Her2 ELISA

Immobilized Trastuzumab at 3 μg/mL (100 μL/well) can bind Biotinylated Human Her2, His Tag, primary amine labeling, long spacer (Cat. No. HE2-H822R) with a linear range of 0.1-3.1 ng/mL (QC tested).

Bioactivity-BLI
 Her2 BLI

Immobilized Herceptin on SA Biosensor via Biotinylated Human Her2, His Tag, primary amine labeling, long spacer (Cat. No. HE2-H822R), can bind Human FCGRT&B2M Heterodimer Protein, His Tag&Strep II Tag (SPR & BLI verified) (Cat. No. FCM-H5286) with an affinity constant of 1.32 μM as determined in BLI assay (ForteBio Octet Red96e) (Routinely tested).

Bioactivity-FACS
 Her2 FACS

2e5 of Anti-Her2 CAR-293 cells were stained with 100 μL of 1μg/mL of Biotinylated Human Her2, His Tag, primary amine labeling, long spacer (Cat. No. HE2-H822R) and negative control protein respectively, washed and then followed by PE-SA and analyzed with FACS (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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