Source:

Escherichia coli.

Molecular Weight:

21.4 kDa, observed by non-reducing SDS-PAGE.

Purity:

> 95% by SDS-PAGE analysis.

Biological activity:

ED50 < 0.1 ng/mL, measured by a cell proliferation assay using NSF-60 cells, corresponding to a specific activity of > 1 × 10ˆ7 units/mg.

AA Sequence:

MIPLLTVSS LPPSLPLPRS FLLKSLEQVR KIQARNTELL EQLCATYKLC HPEELVLFGH SLGIPKASLS SCSSQALQQT KCLSQLHSGL FLYQGLLQAL AGISSELAPT LDMLHLDVDN FATTIWQQME SLGVAPTVQP TQSTMPIFTS AFQRRAGGVL VTSYLQSFLE TAHHALHHLP RPAQKHFPES LFISI

Endotoxin:

< 0.2 EU/μg, determined by LAL method.

Formulation:

Lyophilized after extensive dialysis against 20mM Citric Acid

Background:

Granulocyte Colony-Stimulating Factor (G-CSF) is a hematopoietic cytokine belonging to the four-helix bundle cytokine superfamily. G-CSF is produced by monocytes, macrophages, fibroblasts, and endothelial cells. Its expression is highly regulated and induced by a variety of agents, including Tumor Necrosis Factor (TNF), Interleukin-1 (IL-1), Interferon γ (IFN-γ), and Granulocyte-Macrophage Colony-Stimulating Factor (GM-CSF). G-CSF binds to the CSF-specific high affinity receptors expressed on neutrophilic granulocyte lineage. In vivo G-CSF regulates the production of neutrophilic granulocytes, a critical part of host defense systems, and helps the maturation of leukemic cell lines. G-CSF is widely employed clinically because of its fairly innocuous safety profile.Recombinant rat Granulocyte Colony-Stimulating Factor (rrG-CSF) produced in E.coli is a single non-glycosylated polypeptide chain containing of 194 amino acids. A fully biologically active molecule, rrG-CSF has a molecular mass of 21.4 kDa analyzed by non-reducing SDS-PAGE and is obtained by proprietary chromatographic techniques at GenScript.

Usage:

This material is offered by USA Bioworld biotech for research, laboratory or further evaluation purposes. For research use only.

Physical Appearance:

Sterile Filtered White lyophilized (freeze-dried) powder.

Reconstitution:

Reconstituted in ddH2O at 100 μg/mL.

Storage:

Lyophilized recombinant rat Granulocyte Colony-Stimulating Factor (rrG-CSF) remains stable up to 6 months at -80°C from date of receipt. Upon reconstitution, rrG-CSF remains stable up to 2 weeks at 4°C or up to 3 months at -20°C.