Total Price: $0.00
Contact Information
Recombinant Human IGFBP-4/IGFBP4 Protein (His Tag)
SKU: PKSH032597-50
Recombinant Human IGFBP-4/IGFBP4 Protein (His Tag)
| SKU # | PKSH032597 |
| Expression Host | HEK293 Cells |
Description
| Synonyms | IBP-4, IBP4, IGF-Binding Protein 4, IGFBP-4, IGFBP4, Insulin-Like Growth Factor-Binding Protein 4 |
| Species | Human |
| Expression Host | HEK293 Cells |
| Sequence | Asp22-Glu258 |
| Accession | P22692 |
| Calculated Molecular Weight | 27.0 kDa |
| Observed Molecular Weight | 30-35 kDa |
| Tag | C-His |
| Bio-activity | Not validated for activity |
Properties
| Purity | > 95 % as determined by reducing SDS-PAGE. |
| Endotoxin | < 1.0 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 a 0.2 μm filtered solution of 20mM PB, 150mM NaCl, pH 7.2. 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 binding protein 4 (IGFBP-4) is a 24 kDa protein that binds insulin-like growth factor 1 (IGF-1) and IGF-2 with high affinity and inhibits IGF action in vitro. All members of the IGFBP family can bind IGF-I and IGF-II with about equal affinity, but IGFBP-4 binds IGF2 more than IGF1. It contains IGFBP N-terminal domain and thyroglobulin type-1 domain. IGFBP-4 is induced by forskolin and N6, O2’dibutyryl sdenosine 3’, or 5’-cyclic monophosphate. The IGF-binding proteins can prolong the half-life of the IGFs and have been shown to either inhibit or stimulate the growth promoting effects of the IGFs on cell culture. They alter the interaction of IGFs with their cell surface receptors.