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G CSF Human/ 重組人粒細(xì)胞集落刺激因子
  • G CSF Human/ 重組人粒細(xì)胞集落刺激因子

貨物所在地：福建廈門市

更新時(shí)間：2024-11-24 21:00:06

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G CSF Human/ 重組人粒細(xì)胞集落刺激因子
產(chǎn)品編號(hào)：CYT-220
產(chǎn)品規(guī)格：2μg/10μg/1mg

Synonyms CSF-3, MGI-1G, GM-CSF beta, Pluripoietin, Filgrastim, Lenograstim, G-CSF, MGC45931, GCSF.
Introduction GCSF is a cytokine that controls the production, differentiation, and function of granulocytes. The active protein is found extracellularly. Three transcript variants encoding three different isoforms have been found for this gene. Granulocyte/macrophage colony-stimulating factors are cytokines that act in hematopoiesis by controlling the production, differentiation, and function of 2 related white cell populations of the blood, the granulocytes and the monocytes-macrophages. This csf induces granulocytes.
Description Granulocyte Colony Stimulating Factor Human Recombinant produced in E.coli is a single, non-glycosylated, polypeptide chain containing 175 amino acids and having a molecular mass of 18.8 KD.
G-CSF is purified by proprietary chromatographic techniques.
Source Escherichia Coli.
Physical Appearance Sterile Filtered White lyophilized （freeze-dried） powder.
Formulation G-CSF was lyophilized after extensive dialysis against 10mM sodium acetate buffer pH= 4.
Solubility It is recommended to reconstitute the lyophilized Granulocyte Colony Stimulating Factor in sterile 18MΩ-cm H2O not less than 100μg/ml, which can then be further diluted to other aqueous solutions.
Stability Lyophilized Granulocyte Colony Stimulating Factor although stable at room temperature for 3 weeks, should be stored desiccated below -18°C. Upon reconstitution GCSF should be stored at 4°C between 2-7 days and for future use below -18°C.
For long term storage it is recommended to add a carrier protein （0.1% HSA or BSA）.
Please prevent freeze-thaw cycles.
Amino acid sequence The sequence of the first five N-terminal amino acids was determined and was found to be Met-Thr-Pro-Leu-Gly.
Purity Greater than 98.0% as determined byAnalysis by RP-HPLC.
Analysis by SDS-PAGE.
Biological Activity The ED50, calculated by the dose-dependant proliferation of murine NFS-60 indicator cells （measured by 3H-thymidine uptake） is < 0.1 ng/ml, corresponding to a Specific Activity of 1 x 108 IU/mg.
Protein content G-CSF quantitation was carried out by two independent methods
1. UV spectroscopy at 280 nm using the absorbency value of 0.815 as the extinction coefficient for a 0.1% （1mg/ml） solution. This value is calculated by the PC GENE computer analysis program of protein sequences （InliGenetics）.

2. Analysis by RP-HPLC, using a calibrated solution of GCSF as a Reference Standard.
Usage ProSpec's products are furnished for LABORATORY RESEARCH USE ONLY. The product may not be used as drugs, agricultural or pesticidal products, food additives or household chemicals.

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