Human Erythropoietin-alpha Recombinant

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Encompassing Amino Acids: 28-193

Amino Acid Sequence: APP RLICDSRVLE RYLLEAKEAE NITTGCAEHC SLNENITVPD TKVNFYAWKR MEVGQQAVEV WQGLALLSEA VLRGQALLVN SSQPWEPLQL HVDKAVSGLR SLTTLLRALG AQKEAISPPD AASAAPLRTI TADTFRKLFR VYSNFLRGKL KLYTGEACRT GDR

Background: EPO is predominantly synthesized and secreted by tubular and juxtatubular capillary endothelial and interstitial cells of the kidney. Approximately 10-15% of the total amount of Epo comes from extrarenal sources and is predominantly produced by hepatocytes and Kupffer cells of the liver. Approximately 40% of the molecular mass of Epo is due to its glycosylation. Glycosylation is an important factor determining the pharmacokinetic behavior of Epo in vivo. Non- glycosylated Epo has an extremely short biological half life. It still binds to its receptor and may even have a higher specific activity in vitro.

Biological Activity: Activity was determined by the dose-dependent proliferation assay using a factor-dependent human erythroleukemic cell line TF-1 and was found to be 3.8x10^5 IU/mg.

Description: Recombinant EPO-a is a glycosylated disulfide-linked homodimeric protein consisting of 166 amino acid residues, and migrates as an approximately 35 kDa protein under reducing conditions in SDS-PAGE. Optimized DNA sequence encoding Human EPO mature chain was expressed in Chinese Hamster Ovary (CHO) cells.

Endotoxin Level: <0.1 ng/µg (1 EU/µg), using the LAL gel clot method.

Format: lyophilized protein

Formulation: Lyophilized from 0.2 µm filtered PBS solution, pH 7.0.

Genbank: P01588

Purity: ≥98% by SDS-PAGE and HPLC

Reconstitution: Reconstitute at 0.1-1.0 mg/ml in distilled water. This solution can then be diluted into other buffers. To maximize product collection from vial surface, vortex briefly and then spin down to recollect the liquid.

Storage Stability: The lyophilized protein is stable for at least 2 years from date of receipt when stored at -20°C. Upon reconstitution, store in working aliquots at +4°C for up to one month, or at -20°C for up to six months, in the presence of a carrier protein. Avoid repeated freeze/thaw cycles.

Uniprot: P01588

Warnings: Avoid freeze/thaw cycles.

Biosafety Level: Not applicable (BSL-1)

References: J. Biol. Chem., Sep 2009, 284: 26988 - 26998.

• Artikelnummer: BPS90257-A
• Hersteller: BPS Bioscience
• Hersteller Artikelnummer: 90257-A
• Verpackungseinheit: 5 µg
• Mengeneinheit: STK
• Wirt: Hamster