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Home > Proteins & Peptides
Natural and recombinant proteins purified from bacteria (such as E. coli, B. subtilis), yeast (such as S. cerevisiae), baculovirus/insect, mammalian cells (such as CHO cell lines), and cell-free systems.
    4132 Proteins & Peptides Products
  • BP000092-GPF-001: Recombinant Murine Leukemia Inhibitory Factor (LIF) Protein, GST tag

    Source: E. coli-derived.
    mLIF supplement is assessed both on mESCs and on murine M1 myeloid leukemic cells. A standard of 50 units is defined as the concentration of mLIF supplement in 1.0 ml of tissue culture medium that induces the differentiation of 50% of M1 colonies (Metcalf, 1988).
    Embryonic Stem Cell Assay: Differentiation inhibition at 1000 units/ml.
    Murine myeloid leukemic M1 Assay: Specific Activity >108 units/mg.
    Purity: > 95% by SDS-PAGE.

  • BP000027-GD1: Recombinant Human VEGF165 (aa 27-191) Protein

    Source: HEK 293 cell-derived.
    The VEGF activity is measured in a cell proliferation assay using human umbilical vein endothelial cells (HUVEC). The ED50 for this effect is typically 1-5 ng/ml.
    Endotoxin: < 1.0 EU per ug of the protein by the LAL method.
    Purity: > 95% by SDS-PAGE under reducing conditions.

  • BP000028-GD2: Recombinant Human Long R3-IGF-I Protein

    Source: E. coli-derived.
    The IGF-1 activity is calculated by the dose-dependant proliferation of murine BALBC 3T3 cells. The ED50 for this effect is less than 1 ng/ml, corresponding to a specific activity of 1.0x10^6 IU/mg.
    Purity: > 95% by SDS-PAGE and RP-HPLC.

  • BP000029-GD3: Recombinant Human FGF Acidic 136 (aa 19-155) Protein

    Source: E. coli-derived.
    The FGF acidic (aFGF/FGF-1/FGF1) activity is measured in a NIH/3T3 cell proliferation assay. The ED50 for this effect is typically 0.1-0.3 ng/ml in the presence of 10 ug/ml of heparin.
    Endotoxin: <1.0 EU per 1 ug of the protein by the LAL method.
    Purity: > 95% by SDS-PAGE under reducing conditions and visualized by silver stain.

  • BP000030-GD4: Recombinant Human FGF Basic 147

    Source: E. coli-derived.
    The FGF basic (bFGF/FGF-2/FGF2) activity is measured in a cell proliferation assay using NIH-3T3 mouse fibroblasts. The ED50 for this effect is less than 0.5 ng/ml.
    Endotoxin Level: <1.0 EU per 1 ug of the protein by the LAL method.
    Purity: > 97% by SDS-PAGE under reducing conditions and visualized by silver stain.

  • BP000031-GD5: Recombinant Heparinase I from Flavobacterium heparinum

    Source: E. coli-derived.
    Specific activity >100 IU/mg. One international unit (IU) of recombinant Heparinase I is defined as the amount of enzyme that will liberate 1.0 umole unsaturated oligosaccharides from porcine mucosal heparin per minute at 30°C and pH 7.0.
    Purity >95% by SDS-PAGE.

  • BP000032-GD6: Recombinant Heparinase II from Flavobacterium heparinum

    Source: E. coli-derived.
    Specific activity >6 IU/mg. One international unit (IU) of recombinant Heparinase II is defined as the amount of enzyme that will liberate 1.0 umole unsaturated oligosaccharides from heparin or heparan sulfate per minute at 30°C and pH 7.3.
    Purity >95% by SDS-PAGE.

  • BP000033-GD7: Recombinant Heparinase III from Flavobacterium heparinum

    Source: E. coli-derived.
    Specific activity >50 IU/mg. One international unit (IU) of recombinant Heparinase III is defined as the amount of enzyme that will liberate 1.0 umole unsaturated oligosaccharides from heparan sulfate per minute at 30°C and pH 7.3.
    Purity >95% by SDS-PAGE.

  • BP000034-GD8: Recombinant Bovine Enterokinase, Light Chain

    Source: Yeast-derived.
    Unit Definition: 1 IU of Enterokinase (EK) will cleave 50 ug of test substrate to 95% completion in 16 hours or less at 25°C.
    Unit Assay Condition: 20 mM Tris-HCl (pH 8.0 @ 25°C), 50 mM NaCl, 2 mM CaCl2, 25 ug of an MBP fusion protein test substrate and enzyme. Incubate at 23°C.

  • BP000036-GD10: Recombinant Human FVII Protein

    Source: HEK 293 cell derived.
    Endotoxin Level: <1.0 EU per 1 ug of the protein by the LAL method.
    Purity > 95%, by SDS-PAGE under reducing conditions and visualized by silver stain.

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