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Recombinant Human IGF-II/IGF2 Protein (Active)
SKU: PKSH032596-100
Recombinant Human IGF-II/IGF2 Protein (Active)
| SKU # | PKSH032596 |
| Expression Host | E.coli |
Description
| Synonyms | IGF-II, IGF2, Insulin-Like Growth Factor II, PP1446, Somatomedin-A |
| Species | Human |
| Expression Host | E.coli |
| Sequence | Ala25-Glu91 |
| Accession | P01344 |
| Calculated Molecular Weight | 8.3 kDa |
| Observed Molecular Weight | 11 kDa |
| Tag | N-His |
| Bio-activity | Measure by its ability to induce MCF-7 cells proliferation. The ED50 for this effect is <3 ng/mL. The specific activity of recombinant human IGF-II is > 3x 105 IU/mg. |
Properties
| Purity | > 98 % as determined by reducing SDS-PAGE. |
| Endotoxin | < 0.1 EU per μg of the protein as determined by the LAL method. |
| Storage | Generally, lyophilized proteins are stable for up to 12 months when stored at -20 to -80℃. Reconstituted protein solution can be stored at 4-8℃ for 2-7 days. Aliquots of reconstituted samples are stable at < -20℃ for 3 months. |
| Shipping | This product is provided as lyophilized powder which is shipped with ice packs. |
| Formulation | Lyophilized from sterile PBS,pH 8.0. Normally 5% - 8% trehalose, mannitol and 0.01% Tween 80 are added as protectants before lyophilization. Please refer to the specific buffer information in the printed manual. |
| Reconstitution | Please refer to the printed manual for detailed information. |
Background
Insulin-Like Growth Factor II (IGF2) belongs to the insulin family of polypeptide growth factors that is involved in development and growth. Members of this family are structurally homologous to proinsulin, and share higher sequence identity. IGF2 is expressed only from the paternally inherited allele and believed to be secreted by the liver and to circulate in the blood. IGF2 possess growth-promoting activity and can stimulate the proliferation and survival of various cell types including muscle, bone, and cartilage tissue in vitro. IGF2 is influenced by placental lactogen and may play a role in fetal development.