Application Note: Macrophage Colony Stimulating Factor Recombinant Protein has been tested by SDS-PAGE and biological activity and s suitable as a control for polyclonal or monoclonal anti-Macrophage Colony Stimulating Factor in immunological assays. Lyophilized in 10 mM sodium phosphate, 100 mM sodium chloride, pH 8.0.
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Other Performance Data: Endotoxin Level: Measured by kinetic LAL analysis and is typically ≤ 1 EU/μg protein. Biologic Activity: The activity is determined by the dose-dependent proliferation of mouse NFS-60 cells and is typically 10.0 ng/mL.
Physical State: Lyophilized
Purity and Specificity: Macrophage Colony Stimulating Factor purity was determined to be greater than 97% as determined by HpLC, analysis by UV-Spectroscopy at 280nm, and by reducing and non-reducing SDS-pAGE.
Background: Macrophage Colony Stimulating Factor (M-CSF) is a hematopoietic growth factor produced by a wide variety of cells. M-CSF is known to stimulate differentiation of hematopoietic stem cells to monocyte-macrophage cell populations in culture. M-CSF acts through the CSF receptor 1. Although human M-CSF shows activity on mouse cells, mouse CSF shows no activity on human cells. Recombinant human M-CSF is a disulfide linked homodimer, containing two 159 amino acid chains, with a total molecular weight of 36.8 kDa.
Low Endotoxin: Yes
Other: User Optimized