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Clonagen

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Recombinant Human Stem Cell Factor (SCF)
(Cat. No.: C034)


Background:
       
Stem Cell Factor (SCF) is a hematopoietic growth factor that exerts its activity at the early stages of hematopoiesis. SCF stimulates the proliferation of myeloid, erythroid and lymphoid progenitors in bone marrow cultures and has been shown to act synergistically with colony stimulating factors.

Description:
       
Recombinant Human SCF produced in E. coli is a single, non-glycosylated polypeptide chain containing 165 amino acids and having a molecular mass of 18409 Dalton.

Quality Control:
        Biological activity:
The ED50 as determined by the dose-dependant stimulation of Human TF-1 cells is less then 2 ng/ml, corresponding to a Specific Activity of 5.0 x 105 IU/mg.
        Purity: Greater than 95% as determined by
                    (a) Analysis by SEC-HPLC.
                    (b) 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 Met-Glu-Gly-Ile-Cys.
        Endotoxin: Less than 0.1 ng/µg (IEU/µg) of rHuSCF.

Formulation: rHuSCF was lyophilized from a concentrated (1mg/ml) sterile solution containing 10mM Acetic acid.

Storage: Lyophilized rHuSCF although stable at room temperature for 3 weeks, should be stored desiccated below -18oC. Upon reconstitution rHuSCF should be stored at 4oC between 2-7 days and for future use below -18oC. For long term storage it is recommended to add a carrier protein (0.1% HSA or BSA).
        Please avoid freeze-thaw cycles.
 

Reconstitution: It is recommended to reconstitute the lyophilized rHuSCF in sterile 18MΩ-cm H2O not less than 100µg/ml, which can then be further diluted to other aqueous solutions.

 

 


 
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Last modified: 05/29/09