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Recombinant Human FGF-2/FGF basic/FGFb Protein (aa 1-155)(Q65I,C96S,N111G)
SKU: PKSH033502-50
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Recombinant Human FGF-2/FGF basic/FGFb Protein (aa 1-155)(Q65I,C96S,N111G)
| SKU # | PKSH033502 |
| Expression Host | E.coli |
Description
| Synonyms | Basic fibroblast growth factor, FGF-2, FGF2, FGFB, Fibroblast growth factor 2, HBGF-2, Heparin-binding growth factor 2, bFGF |
| Species | Human |
| Expression Host | E.coli |
| Sequence | Met1-Ser155 |
| Accession | BAG70264.1 |
| Calculated Molecular Weight | 17.2 kDa |
| Observed Molecular Weight | 16 kDa |
| Tag | None |
| 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 Tris, 5% sucrose, 0.02% Tween 80, 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
Fibroblast growth factors (FGF) are a family of heparin-binding secreted proteins that stimulate cell proliferation and differentiation in a wide variety of tissues. FGFs play important roles in diverse biological functions both in vivo and in vitro; including mitogenesis; cellular migration; differentiation; angiogenesis; and wound healing. Human embryonic stem cell (hESC) cultures require FGF basic (also known as FGF-2 or bFGF) in cell culture media to remain in an undifferentiated and pluripotent state. Thermostable FGF basic was engineered for enhanced stability in culture media; without modification of its biological function. FGF basic is a required component of stem cell culture media for maintaining cells in an undifferentiated state. Because FGF basic is unstable; daily media changes are needed. The thermostable FGF basic that supports a 2-day media change schedule; so no media changes are required over a weekend. This thermostable FGF basic was more stable than FGF basic in biochemical studies; and maintained cell growth; pluripotency and differentiation potential with a 2-day feeding schedule.