Human Granulocyte Macrophage-Colony Stimulating Factor Recombinant

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Encompassing Amino Acids: 18-144

Amino Acid Sequence: APA RSPSPSTQPW EHVNAIQEAR RLLNLSRDTA AEMNETVEVI SEMFDLQEPT CLQTRLELYK QGLRGSLTKL KGPLTMMASH YKQHCPPTPE TSCATQIITF ESFKENLKDF LLVIPFDCWE PVQE

Background: GM-CSF is a monomeric protein of 127 amino acids with two glycosylation sites. The protein is synthesized as a precursor of 144 amino acids, which included a hydrophobic secretory signal sequence at the N-terminal end. The sugar moiety is not required for the full spectrum of biological activities. Non-glycosylated and glycosylated GM-CSF show the same activities in vitro. Fully glycosylated GM-CSF is biologically more active in vivo than the non-glycosylated protein. This protein is secreted together with other factors by T-cells and macrophages following cell activation by antigens or mitogens. Approximately 90% of the secreted colony stimulating activities are due to GM-CSF.

Biological Activity: The ED₅₀ as determined by the dose-dependent stimulation of the proliferation of human TF-1 cells is ≤ 0.1 ng/ml, corresponding to a specific activity of≥ 1 x 10^7 units/mg.

Description: Recombinant GM-CSF is a disulfide-linked monomer protein, consisting of 127 amino acids and migrates as an approximately 15 kDa protein under reducing conditions. Optimized DNA sequence encoding Human Granulocyte Macrophage-Colony Stimulating Factor mature chain was expressed in E. coli.

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: P04141

Purity: ≥97% 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: P04141

Warnings: Avoid freeze/thaw cycles.

Biosafety Level: Not applicable (BSL-1)

References: 1. Hiasa, M., et al. Blood November 12, 2009 vol. 114 (20): 4517-4526 .
2. Zhu, S.M., et al. J. Exp. Med. 206 (10): 2141-2149.
3. Chin, P.Y., et al. Hum. Reprod. (2009) 24 (12): 2997-3009.

• Artikelnummer: BPS90145-B
• Hersteller: BPS Bioscience
• Hersteller Artikelnummer: 90145-B
• Verpackungseinheit: 20 µg
• Mengeneinheit: STK