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CYT-416

重組人粒-巨噬細(xì)胞集落刺激因子-sf9（rHuGM-CSF-Sf9）

2μg/10μg/1mg

Prospec

Description :
	Recombinant Human GM-CSF produced in insect cells is a single, glycosylated, polypeptide chain containing 127 amino acids and having a molecular mass of 14477 Dalton. Recombinant Human GM-CSF is fused to a C-terminal His -tag （6x His） and purified by proprietary chromatographic techniques.
	Physical Appearance:
	Sterile Filtered White lyophilized （freeze-dried） powder.
	Formulation:
	The protein was lyophilized with no additives.
	Solubility:
	It is recommended to reconstitute the lyophilized GM-CSF in sterile 18MΩ-cm H₂O not less than 100µg/ml, which can then be further diluted to other aqueous solutions.
	Stability:
	Lyophilized GM-CSF although stable at room temperature for 3 weeks, should be stored desiccated below -18⁰C. Upon reconstitution GM-CSF should be stored at 4⁰C between 2-7 days and for future use below -18⁰C. For long term storage it is recommended to add a carrier protein （0.1% HSA or BSA）. Please avoid freeze-thaw cycles.
	Purity:
	Greater than 98.0% as determined by: （a） Analysis by RP-HPLC. （b） Anion-exchange FPLC. （c） Analysis by reducing and non-reducing SDS-PAGE Silver Stained gel.
	Amino acid sequence:
	The sequence of the first five N-terminal amino acids was determined and was found to be Ala-Pro-Ala-Arg-Ser. N-terminal methionine has been compley removed enzymatically.
	Dimers and aggregates:
	Less than 1% as determined by silver-stained SDS-PAGE gel analysis.
	Biological Activity:
	ProSpec’s Recombinant GM-CSF is fully biologically active when compared to standard. The ED50 as determined by the dose-dependant stimulation of the proliferation of human TF-1 cells （human erythroleukemic indicator cell line） is < 0.1 ng/ml, corresponding to a Specific Activity of 1 x10⁷ IU/mg.
	Endotoxin:
	Less than 0.1 ng/µg （IEU/µg） of GM-CSF .
	Protein content:
	Protein quantitation was carried out by two independent methods: 1. UV spectroscopy at 280 nm using the absorbency value of 0.963 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 standard solution of GM-CSF 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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上一篇：重組人粒細(xì)胞巨噬細(xì)胞集落刺激因子（GM-CSF）
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