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Your Position: Home > All Other Proteins > IGFBP-3 > Human IGFBP-3 Protein, His Tag

Human IGFBP-3 Protein, His Tag

  • Synonym
    IGFBP3,BP-53,IBP3
  • Source
    Human IGFBP-3, His Tag (IG3-H5229) is expressed from human 293 cells (HEK293). It contains AA Gly 28 - Lys 291 (Accession # AAH18962).
    Predicted N-terminus: Gly 28
  • Molecular Characterization
    Online(Gly 28 - Lys 291) AAH18962

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

    The protein has a calculated MW of 31.0 kDa. The protein migrates as 40-50 kDa under reducing (R) condition (SDS-PAGE).

  • 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. Normally trehalose is added as protectant before lyophilization.

    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.

    No activity loss was observed 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
Human IGFBP-3, His Tag (Cat. No. IG3-H5229) SDS-PAGE gel

Human IGFBP-3, His Tag on SDS-PAGE under reducing (R) condition. The gel was stained overnight with Coomassie Blue. The purity of the protein is greater than 95%.

Bioactivity-ELISA
Human IGFBP-3, His TagHuman IGFBP-3, His Tag (Cat. No. IG3-H5229) ELISA bioactivity

Immobilized Human IGF-I, Fc Tag (Cat. No. IG1-H4269) at 5 μg/mL (100 μL/well) can bind Human IGFBP-3, His Tag (Cat. No. IG3-H5229) with a linear range of 0.031-0.5 μg/mL (QC tested).

Human IGFBP-3, His TagHuman IGFBP-3, His Tag (Cat. No. IG3-H5229) ELISA bioactivity

Immobilized Human IGFBP-3, His Tag (Cat. No. IG3-H5229) at 5 μg/mL (100 μL/well) can bind Biotinylated Human IGF-II, Avitag,Fc Tag (Cat. No. IG2-H82F9) with a linear range of 0.008-0.1 μg/mL (Routinely tested).

  • Background
    Insulin-like growth factor-binding protein 3 is also known as IGFBP3, is a protein that, in humans, is encoded by the IGFBP3 gene. IGFBP3 forms a ternary complex of about 140 ~150 kDa with IGF1 or IGF2 and a glycoprotein insulin-like growth factor acid-labile subunit (ALS), thus alter the interaction of IGFs with their cell surface receptors. IGFBP3 exerts either proapoptotic or growth stimulatory effects depending upon the cellular context. Studies have shown that IGFBP3 can leads to the induction of apoptosis dependent or independent of the IGF-IGF receptor axis, accordingly acts as a negative regulator of tumorigenesis and progressing in certain carcinomas. The highest expression level is found in the nonparanchymal cells of the liver. Expression levels are also higher during extrauterine life and peak during puberty.
  • References
  • Please contact us via TechSupport@acrobiosystems.com if you have any question on this product.

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