|42028||Human PDGF-AA Recombinant Protein||
With carrier: Lyophilized from a 0.22 μm filtered solution of 20 mM citrate, pH 3.0 containing 100 mM NaCl and 20 μg BSA per 1 μg hPDGF-AA. Carrier free: Lyophilized from a 0.22 μm filtered solution of 20 mM citrate, pH 3.0 containing 100 mM NaCl.
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 hPDGF-AA. All lots are greater than 98% pure.|
|Endotoxin||Less than 0.01 ng endotoxin/1 μg hPDGF-AA.|
|Activity||The bioactivity of recombinant hPDGF-AA was determined in a NIH/3T3 proliferation assay. The ED50 of each lot is between 4-12 ng/ml.|
|Molecular Formula||Recombinant hPDGF-AA does not have a Met on the amino terminus and has a calculated MW of 14,305. DTT-reduced protein migrates as an 18 kDa polypeptide and the non-reduced cystine-linked homodimer migrates as a 34 kDa protein. The expected amino-terminal SIEEA of recombinant hPDGF-AA was verified by amino acid sequencing.|
Recombinant human PDGF-AA (hPDGF-AA) Ser87-Thr211 (Accession #NP_002598) was produced in E. coli at Cell Signaling Technology.
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