Product Information

Formulation

With carrier: Lyophilized from a 0.22 μm filtered solution of PBS, pH 7.2 containing 10mM DTT and 20 μg BSA per 1 μg hFGF basic. Cystines are not required for bioactivity. Carrier free: Lyophilized from a 0.22 μm filtered solution of PBS, pH 7.2 containing 10mM DTT. Cystines are not required for bioactivity.

Storage

Stable in lyophilized state at 4°C for 1 year after receipt. Sterile stock solutions reconstituted with carrier protein are stable at 4°C for 2 months and at -20°C for 6 months. Avoid repeated freeze-thaw cycles.
Maintain sterility. Storage at -20°C should be in a manual defrost freezer.

Product Description

MW (kDa)	17
Purity	>98% as determined by SDS-PAGE of 6 μg reduced (+) and non-reduced (-) recombinant hFGF basic. All lots are greater than 98% pure.
Endotoxin	Less than 0.01 ng endotoxin/1 μg hFGF basic.
Activity	The bioactivity of recombinant hFGF basic was determined in a NIH/3T3 cell proliferation assay. The ED₅₀ of each lot is between 0.2 - 1.0 ng/ml.
Molecular Formula	Based on amino acid sequencing, 60-80% of recombinant hFGF basic starts at the amino-terminal Pro143 (PALPE) and has a calculated MW of 16,539. The remainder is missing Pro143 and starts at Ala144 (ALPED). DTT-reduced and non-reduced protein migrate as 17 kDa polypeptides.

Source / Purification

Recombinant human FGF basic (hFGF basic) Pro143-Ser288 (Accession #NP_001997) was produced in E. coli at Cell Signaling Technology.

Background

FGF basic (FGF2) is produced by epithelial, tumor and other cell types (1). FGF basic is involved in developmental processes and regulates differentiation, proliferation, and migration (1-6). FGF basic is a critical factor for growing embryonic stem cells in culture without inducing differentiation. FGF basic has a high affinity for heparan sulfate (1,2) and binding is a step in the FGF basic activation of FGFR tyrosine kinase. There are four distinct FGF receptors and each has multiple splice variants. FGF basic binds with high affinity to many, but not all, FGFRs. Signaling cascades activated through FGF basic binding to FGFR include the ras-raf-MAPK, PLCγ/PKC, and PI3K/AKT pathways (1).

Database Links

UniProt ID: P09038

Entrez-Gene Id: 2247

Product Citations: 4

Limited Uses

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For Research Use Only. Not For Use In Diagnostic Procedures.

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Human Basic Fibroblast Growth Factor (hFGF basic/FGF2) #8910