With carrier: Lyophilized from a 0.22 μm filtered solution of PBS, pH 7.2 containing 20 μg BSA per 1 μg hVEGF121. Carrier free: Lyophilized from a 0.22 μm filtered solution of PBS, pH 7.2.
Stable in lyophilized state at -20°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.
|Purity||>98% as determined by SDS-PAGE of 6 μg reduced (+) and non-reduced (-) recombinant hVEGF121. All lots are greater than 98% pure.|
|Endotoxin||Less than 0.01 ng endotoxin/1μg hVEGF121.|
|Activity||The bioactivity of recombinant hVEGF121 was determined in a cell proliferation assay using HUVEC. The ED50 of each lot is between 0.5-2 ng/ml.|
|Molecular Formula||Recombinant hVEGF121 contains no "tags" and the nonglycosylated protein has a calculated MW of 14,057. DTT-reduced protein migrates as a 14-22 kDa polypeptide. Heterogeneity in SDS-PAGE is due to glycosylation. The non-reduced cystine-linked homodimer migrates as a 30-36 kDa protein. The expected amino-terminal APMAE of recombinant hVEGF121 was verified by amino acid sequencing.|
Recombinant human VEGF121 (hVEGF121) Ala207-Arg327 (Accession #NP_001020541.2) was expressed in human 293 cells at Cell Signaling Technology.
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