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Catalog Number | orb1494798 |
---|---|
Category | Proteins |
Description | Macrophage Colony-Stimulating Factor 1 (M-CSF), involved especially in monocytopoiesis,[1]is a hematopoietic growth factor. In mammals, it exits three isoforms, which invariably share an N-terminal 32-aa signal peptide, a 149-residue growth factor domain, a 21-residue transmembrane region and a 37-aa cytoplasmictail[2]. The biological activity of human M-CSF is maintained within the 149-aa growth factor domain[3], and it is only active in the disulfide-linked dimeric form[4], which is bonded at Cys63.Recombinant human Macrophage Colony-Stimulating Factor 1 (rhM-CSF) produced in E.coli is a disulfide-linked homodimer containing two non-glycosylated polypeptide chains of 159 amino acids each. A fully biologically active molecule, rhM-CSF has a molecular mass of 28 kDaanalyzed by non-reducing SDS-PAGE and is obtained by proprietary refolding and chromatographic techniques at GenScript. |
Form/Appearance | Sterile Filtered White lyophilized (freeze-dried) powder. |
MW | 28 kDa, observed by non-reducing SDS-PAGE. |
Protein Sequence | MEEVSEYCS HMIGSGHLQS LQRLIDSQME TSCQITFEFV DQEQLKDPVC YLKKAFLLVQ DIMEDTMRFR DNTPNAIAIV QLQELSLRLK SCFTKDYEEH DKACVRTFYE TPLQLLEKVK NVFNETKNLL DKDWNIFSKN CNNSFAECSS QGHERQSEGS |
Source | Escherichia coli. |
Biological Activity | ED50 of 1 - 3 ng/ml, measured by cell proliferation assay of M-NFS-60, corresponding to a specific activity of 3.3 x 10ˆ5-1 x 10ˆ6 units/mg. |
Endotoxins | < 1 EU/μg, determined by LAL method. |
Storage | Lyophilized recombinant human Macrophage Colony-Stimulating Factor 1 (rhM-CSF) remains stable up to 6 months at -80°C from date of receipt. Upon reconstitution, rhM-CSF should be stable up to 2 weeks at 4°C or up to 3 months at -20°C. |
Buffer/Preservatives | Lyophilized after extensive dialysis against 50 mM Tris-HCl, pH 8.0. |
Alternative names | Macrophage Colony Stimulating Factor, CSF-1, Lanim Read more... |
Note | For research use only |
Application notes | Reconstituted in ddH2O or PBS or Tris-HCl, pH 8.0 at 100 μg/ml. |
Expiration Date | 6 months from date of receipt. |
Greater than 95% as determined by SDS-PAGE. | |
26.17 kDa | |
Mammalian cell |
Unconjugated | |
The purity of the protein is greater than 95% as determined by SDS-PAGE and Coomassie blue staining. | |
The protein has a predicted molecular mass of 26 kDa after removal of the signal peptide.The apparent molecular mass of M-CSF-His is approximately 25-55 kDa due to glycosylation. | |
Mammalian |
Unconjugated | |
The purity of the protein is greater than 95% as determined by SDS-PAGE and Coomassie blue staining. | |
The protein has a predicted molecular mass of 51.2 kDa after removal of the signal peptide.The apparent molecular mass of M-CSF-mFc is approximately 55-75 kDa due to glycosylation. | |
Mammalian |
Unconjugated | |
The purity of the protein is greater than 95% as determined by SDS-PAGE and Coomassie blue staining. | |
The protein has a predicted molecular mass of 51.3 kDa after removal of the signal peptide.The apparent molecular mass of M-CSF-hFc is approximately 55-70 kDa due to glycosylation. | |
Mammalian |
ELISA, MS, SDS-PAGE, WB | |
Greater than 95% as determined by reducing SDS-PAGE. | |
Human cells |
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