Description
Insulin-like Growth Factor I (IGF-I), is the dominant effector of Growth Hormone (GH) and is structurally homologous to Proinsulin. The 7.6 kDa mature IGFI is identical between isoforms and is generated by proteolytic removal of the N- and C-terminal regions. Mature human IGF-I shares 94% and 96% amino acid (aa) sequence identity with the mouse and rat orthologs, respectively. The body growth of animals is regulated by growth hormone and IGF-I. The classical theory of this regulation is that most IGF-I in the blood originates in the liver and that body growth is controlled by the concentration of IGF-I in the blood. Meanwhile, IGF-I has been shown to enhance neuronal survival and inhibit apoptosis. IGF-1 promote the proliferation of multiple myeloma (MM) cells and protect them against dexamethasone (Dex)-induced apoptosis.
Product Properties
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Synonyms |
Somatomedin C, IGF-I, IGF-IA, Mechano growth factor, MGF |
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Accession |
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GeneID |
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Source |
E.coli-derived rat IGF-1 protein, Gly49-Ala118. |
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Molecular Weight |
Approximately 7.7 kDa. |
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AA Sequence |
GPETLCGAEL VDALQFVCGP RGFYFNKPTG YGSSIRRAPQ TGIVDECCFR SCDLRRLEMY CAPLKPTKSA |
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Tag |
None |
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Physical Appearance |
Sterile Filtered White lyophilized (freeze-dried) powder. |
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Purity |
>97% by SDS-PAGE and HPLC analyses. |
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Biological Activity |
The ED50 as determined by a cell proliferation assay using serum free human MCF-7 cells is less than 2 ng/mL, corresponding to a specific activity of > 5.0 × 105 IU/mg. Fully biologically active when compared to standard. |
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Endotoxin |
< 1.0 EU per 1μg of the protein by the LAL method. |
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Formulation |
Lyophilized from a 0.2 μm filtered concentrated solution in PBS, pH 7.4. |
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Reconstitution |
We recommend that this vial be briefly centrifuged prior to opening to bring the contents to the bottom. Reconstitute in sterile distilled water or aqueous buffer containing 0.1% BSA to a concentration of 0.1-1.0 mg/mL. Stock solutions should be apportioned into working aliquots and stored at ≤ -20℃. Further dilutions should be made in appropriate buffered solutions. |
Shipping and Storage
The products are shipped with ice pack and can be stored at -20℃ to -80℃ for 1 year.
Recommend to aliquot the protein into smaller quantities when first used and avoid repeated freeze-thaw cycles.
Cautions
1. Avoid repeated freeze-thaw cycles.
2. For your safety and health, please wear lab coats and disposable gloves for operation.
3. For research use only!